Dissertations / Theses: 'Energy and lighting analysis'

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Min, Jihoon. "Energy Efficient Lighting: Consumer Preferences, Choices, and System Wide Effects." Research Showcase @ CMU, 2014. http://repository.cmu.edu/dissertations/431.

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Lighting accounts for nearly 20% of overall U.S. electricity consumption, 14% of U.S. residential electricity consumption, and 6% of total U.S. carbon dioxide equivalent (CO2e) emissions. A transition to alternative energy-efficient technologies could reduce this energy consumption considerably. We studied three questions related to energy efficiency lighting choices and consequences, which are: • Question 1: How large is the system-wide effect of a residential lighting retrofit with more efficient lighting technologies? • Question 2: Based on stated preference (SP) data, which factors influence consumer choices for general service light bulbs? What is the effect of the new lighting efficiency label mandated by the Federal Trade Commission? • Question 3: What can we learn about market trends and consumer choices from consumer panel data (i.e. revealed preference (RP) data) for general service light bulbs between 2004 and 2009? How can we compare the findings from SP and RP data, and which findings are robust across the two? In Chapter 2, we focus on the issue of lighting heat replacement effects. The issue is as follows: lighting efficiency goals have been emphasized in various U.S. energy efficiency policies. However, incandescent bulbs release up to 95% of input energy as heat, and it has been argued that replacing them with more efficient alternatives has a side effect in the overall building energy consumption: it increases the heating service that needs to be provided by the heating systems and decreases the cooling service that needs to be provided by the cooling systems. We investigate the net energy consumption, CO2e emissions, and saving in energy bills for single family detached houses across the U.S. as one moves towards more efficient lighting systems. In some regions, these heating and cooling effects from more efficient lighting can undermine up to 40% of originally intended primary energy savings, erode anticipated carbon savings completely, and lead to 30% less household monetary savings than intended. However, this overall effect is at most one percent of total emissions or energy consumption by a house. The size of the effect depends on various regional factors such as climate, electricity fuel mix, differences in emission factors of main energy sources used for heating and cooling, and electricity prices. Other tested factors such as building orientation, insulation level, occupancy scenario, or day length do not significantly affect the results. Then, in Chapter 3, we focus on factors that drive consumer choices for light bulbs. We collected stated preference data from a choice-based conjoint field experiment with 183 participants. We estimate discrete choice models from the data and find that politically liberal consumers have a stronger preference for compact fluorescent lighting technology and for low energy consumption. Greater willingness-to-pay for lower energy consumption and longer life is observed in conditions where estimated operating cost information was provided. Providing estimated annual cost information to consumers reduces their implicit discount rate by a factor of five, lowering barriers to adoption of energy efficient alternatives with higher up-front costs; however, even with cost information provided, consumers continue to use implicit discount rates of around 100%, which is larger than that estimated for other energy technologies. Finally, we complemented the stated preference study with a revealed preference study. This is because stated preference data alone have limitations in explaining consumer choices, as purchases are affected by many other factors that are outside of the experimenter control. We investigate consumer preferences for lighting technology based on revealed preference data between 2004 and 2009. We assess the trends in lighting sales for different lighting technologies across the country, and by store type. We find that, across the period between 2004 and 2009, sales of all general service light bulbs are almost monotonically decreasing, while CFL sales peaked in 2007. Thanks to increasing adoption of CFLs during the period, newly purchased light bulbs contributed to lowering carbon emissions and electricity consumption, while not sacrificing total produced lumens as much. We study consumer preferences for real light bulbs by estimating choice models, from which we estimate willingness-to-pay (WTP) for light bulb attributes (watt and type) and implicit discount rates (IDR) consumers adopt for their purchases. We find that the campaign for efficient bulbs in Wal-Mart in 2007 is potentially related to the peak in CFL adoption in 2007 in addition to the effects of the EISA or other factors/programs around the same period. Consumers are willing to pay, $1.84 more for a change from an incandescent bulb to a CFL and -$0.06 for 10W increase, the values which also include willingness-to-pays for corresponding changes in unobserved variables such as life and color. IDRs for four representative states range between around 230% and 330%, which is in a similar range we estimate from the choice experiment. Overall, even with energy efficiency labels, nationwide promotion of CFLs by retailers, or better availability of CFLs in the transforming residential lighting market, we see the barriers to energy efficient residential lighting are still persistent, which are reflected in high implicit discount rates observed from the models. While we can expect the EISA to be effective in lowering the barriers through regulation, it alone will not close energy efficiency gap in the residential lighting sector.

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Luster, Ana, and Ana Luster. "Analysis of Lighting Schemes in Public Assembly Rooms for Improved Energy Performance." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/624134.

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The energy use of commercial building operations is a significant contributor to the total global energy demand, and lighting is one of the largest end uses of electricity in commercial buildings. Convention Centers as commercial buildings are examples of big energy consumers, and they present a unique opportunity to showcase benefits of green building techniques due to their large size and broad range of visitors; however, the individual nature of convention centers makes it challenging to find design improvements which will be helpful in general for many convention centers. One exception to this rule of individuality is the presence of public assembly rooms, which are ubiquitous in nature and are used heavily. Traditionally, public assembly rooms are fully enclosed to allow for full control of illumination levels with artificial lighting, particularly fluorescent light. This represents a missing opportunity to utilize daylight or energy efficient artificial light to reduce energy use while enhancing human visual comfort. The objective of this research is to analyze the potential impact of the use of daylight in public assembly rooms. We present the results of a set of computer simulations performed using IES VE software. The simulations are performed as an iterative process, using as base case a north-facing public assembly room in the Tucson Convention Center, and progressively updating the lighting scheme using the software to analyze the illuminance levels for each case. The results are used to propose a lighting scheme for the north-facing public assembly room which uses 100% daylight to achieve a uniform level of illumination and meets the compliance of illumination requirements for public assembly rooms.

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Jarrell, Robert Perry. "Natural daylighting : a thermal analysis." Thesis, Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/22350.

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Natarajan, Hariharan. "Post occupancy energy analysis of the Gwinnett Environmental and Heritage Center." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41214.

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Tweedy, Phillip. "Analysis of Hybrid Electric Autonomous Tactical Support System." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/76877.

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The modern day expeditionary warfighter faces extraordinary challenges in the battle field and being a beast of burden should not be one of them. Currently the dismounted warfighter is impeded with carrying over 100lbs of tactical gear and supplies for multiday missions in remote territory. Expeditionary forces are also facing an energy and logistical crisis getting water, fuel, and batteries to the tip of the spear. Finding ways to enable self-sufficiency and reducing resupply tethers for small unit operations is a high priority for the armed forces. The Hybrid Electric Autonomous Tactical Support System directly and efficiently tackles both problems head on by synergizing efforts to lighten the load and self sustaining base power by combining the capabilities of the Ground Unmanned Support Surrogate (GUSS) and the Experimental Forward Operating Base projects. Hybridization of the drivetrain of the GUSS vehicle will provide the reliable power for onboard autonomous systems and also enable silent operation modes. The hybrid onboard generator can efficiently provide generous amounts of exportable DC and AC power on demand and is an ideally sized backup/primary power system for small unit bases and forward command posts. The vehicle's onboard energy storage and generator system can also be linked with renewable energy sources to demonstrate the tactical smart mini grid concept. This thesis develops the power requirements for an autonomous system, GUSS mission derived hybrid electric drivetrain specifications, and Marine Corps small echelon bases for the development of the multifunction Hybrid Electric Autonomous Tactical Support System.
Master of Science

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Jalaei, Farzad. "Integrate Building Information Modeling (BIM) and Sustainable Design at the Conceptual Stage of Building Projects." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32536.

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Lately the construction industry has become more interested in designing and constructing environmentally friendly buildings (e.g. sustainable buildings) that can provide both high performance and monetary savings. Analyzing various parameters during sustainable design such as Life Cycle Assessment (LCA) and energy consumption, lighting simulation, green building rating system criteria and associated cost of building components at the conceptual design stage is very useful for designers needing to make decisions related to the selection of optimum design alternatives. Building Information Modeling (BIM) offers designers the ability to assess different design options and to select vital energy strategies and systems at the conceptual stage of proposed buildings. This thesis describes a methodology to implement sustainable design for proposed buildings at their conceptual stage. The proposed methodology is to be implemented through the design and development of a model that simplifies the process of designing sustainable buildings, evaluating their Environmental Impacts (EI), assessing their operational and embodied energy and listing their potential accumulated certification points in an integrated environment. Therefore, a Decision Support System (DSS) is developed by using Multiple Criteria Decision Making (MCDM) techniques to help design team decides and selects the best type of sustainable building components and design families for proposed projects based on three main criteria (i.e. Environmental, Economical factor «cost efficiency » and Social wellbeing) in an attempt to identify the influence of design variations on the sustainable performance of the whole building. The DSS outcomes are incorporated in an integrated model capable of guiding users when performing sustainable design for building projects. The proposed methodology contains five modules: 1) Database Management System (DBMS), 2) Energy and lighting analysis, 3) Life Cycle Assessment (LCA), 4) LEED and 5) Life Cycle Cost (LCC). To improve the workability of the proposed model, a use case of abovementioned modules are going to be created as plug-ins in BIM tool. The successful implementation of such a methodology represents a significant advancement in the ability to attain sustainable design of a building during the early stages, to evaluate its EI, and to list its potentially earned certification points and associated soft costs.

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Sánchez, Balvás Lizeth Artemisa. "Sustainability for energy-efficient lighting." Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/671451.

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The social, environmental and economic side effects of the street lighting are the foremost concern for this thesis, since the expanding use of light at night, along with an inappropriate design, has led a large energy consumption, light pollution and impact on human health and the environment. With increasing consideration on the negative side-effects, it has introduced new recommendations for energy efficient lighting, indicators, and new energy classifications systems to evaluate the energy performance of lighting systems. According to the literature, the energy classification systems are based on installed power and lighting parameters (luminance or illuminance), which influence by regulating the energy consumption and the light levels entering the eye. However, recent studies on the advances of lighting technologies, i.e. light-emitting diode (LED), control systems and luminaires, and developments in mesopic photometry and its influence in energy reduction and vision performance, demand for new requirements. This implies a new quantification system to measure energy efficiency by incorporating all the elements that affect the overall efficiency of the installation. Within this context, an alternative tool to aid decision-makers in choosing the best energy efficiency system to be implemented and to support evidence on the energy savings on street lighting was proposed. This alternative approach takes into consideration the improvement of visual performance by correcting the standard photometry system (photopic) by the mesopic system recommended within the CIE 191:2010 and the operational hours of the lighting system, which are usually disregarded by the most commonly used energy classification approaches. The research outlined in this thesis proposes to use the value function approach that allowed standardizing the proposed energy consumption indicator within a value scale ranging from 0 to 1, which also represents satisfaction degree: the less energy is consumed the more grade of satisfaction. A case study comprising 13 representative streets of the Eixample District of Barcelona was used to validate the alternative approach proposed, and results were compared with those obtained by considering three energy efficiency classifications currently used in Spain, Netherlands and Italy. For the sample, a systematic procedure was carried out to collect data regarding lighting class and geometrical characteristics of the streets, and to the main characteristics of the lighting system. The results derived from the application of the proposed method can be used straightforwardly to quantify the potential energy savings that can be obtained when using different energy classifications. Moreover, these results provide a critical analysis by pointing out the strengths and weakness of the most significant energy performance indicators along with their corresponding energy classification systems. In conclusion, this thesis constitutes a conceptual and empirical approach to the energy classification systems applied in Europe to the street lighting. Thanks to the methodological contribution and the knowledge obtained, this thesis intends to contribute to improving the energy efficiency-based classification systems, and consequently, to move forward into a sustainable and smart assessment tool.
La principal motivación para el estudio del alumbrado público en este trabajo, radica en la influencia que éste ejerce a nivel social, ambiental y económico. El aumento del consumo energético, la contaminación lumínica y el impacto tanto en la salud como en el medio ambiente, son efectos secundarios causados por el uso excesivo de la luz durante la noche junto con un diseño inadecuado del alumbrado público. Por ello, han surgido recomendaciones en el ámbito de eficiencia energética, indicadores y sistemas de clasificación energética que ayudan a evaluar las mejoras necesarias para obtener una instalación de alumbrado público eficiente. La mayoría de los sistemas de clasificación energética están basados en parámetros como la potencia instalada y los niveles de iluminación. Sin embargo, existen estudios que confirman los recientes avances tecnológicos en iluminación y, en el desarrollo de la fotometría mesópica que influye en la reducción del consumo energético y en el rendimiento visual. Esto pone de manifiesto que la evaluación de eficiencia energética del alumbrado público a través de los sistemas de clasificación energética actuales, no deberían basarse solamente en los parámetros básicos, si no que también deberían considerarse otros parámetros que incidan en la eficiencia global de la instalación y que tomen en cuenta las demandas actuales del sector. En este contexto, se ha propuesto una herramienta alternativa que ayude a los responsables de tomar decisiones a seleccionar e implementar el mejor sistema de eficiencia energética, y a evidenciar los ahorros energéticos en el alumbrado público. Este enfoque alternativo toma en cuenta la mejora del rendimiento visual al corregir el sistema de fotometría estándar (fotópico) por el sistema mesópico recomendado en el reporte técnico CIE 191: 2010, así como las horas de funcionamiento del sistema de iluminación. Estos dos parámetros, generalmente son ignorados por los sistemas de clasificación energética usados comúnmente. Esta investigación propone utilizar la Función de Valor, la cual refleja el grado de satisfacción del indicador de consumo energético a partir de un valor estandarizado en una escala del 0 al 1: menos energía es consumida, mayor es el grado de satisfacción que se obtiene. El nuevo enfoque se ha validado en un caso de estudio conformado por 13 calles representativas del distrito del Eixample de Barcelona, cuyos resultados fueron correlacionados con tres sistemas de clasificación energética utilizados actualmente en España, Países Bajos e Italia. Se llevó a cabo un procedimiento sistemático para la colección de datos del caso de estudio, donde se obtuvieron las características geométricas de las calles y sus respectivas clases de iluminación, así como las características principales del sistema de iluminación. Los resultados obtenidos de la aplicación del método propuesto y de las diferentes clasificaciones energéticas, se pueden utilizar de forma sencilla para cuantificar el ahorro energético. Además, estos resultados proporcionan un análisis crítico al resaltar las fortalezas y debilidades de los indicadores de eficiencia energética junto con sus correspondientes sistemas de clasificación energética. En conclusión, este trabajo constituye un enfoque conceptual y empírico de los sistemas de clasificación energética del alumbrado público aplicados en Europa. Gracias al aporte metodológico y al conocimiento obtenido, este trabajo pretende contribuir a la mejora de los sistemas de clasificación basados en la eficiencia energética y, en consecuencia, avanzar hacia una herramienta de evaluación sostenible e inteligente.

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Alsaeid, Mohamad Khaled. "Sustainable lighting in offices "How to save energy in offices with a new lighting design ?" : An energy efficient Lighting design approach in offices." Thesis, KTH, Ljusdesign, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290570.

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Sustainable efficient lighting has become as one of the most important issues in the office environment In Sweden, energy demand for lighting corresponds to 20% of the total electricity used in office buildings (1), while It has been estimated that lighting accounts for about 20% of the total power generation of the world (2). This thesis investigates how to make lighting in offices more sustainable and focuses on energy efficiency, to save energy through creating guidelines related to light source technologies, lighting control systems and the user preferences. Then those guidelines are applied to an existing office through suggesting a new lighting design. The existing office in this case is the ÅF company 10th office floor located in Stockholm, Sweden. This investigation methodology consists of two main parts literature review and Project (case) study. In the first part, methods used are a combination of literature review related to saving energy through sustainability in lighting and how light source technology, lighting control systems and the effect of user behavior could help to create more energy efficient lighting systems. In the second part, the methods are qualitative such as surveys, quantitative methods and personal observations. The used methods helped to create guidelines for the new suggested lighting design for ÅF 10 th office floor part. The Results shows that the new suggested lighting design saves energy up to 31.96% more than the current lighting situation.

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Jakoef, Adiel. "Impact assessment of energy-efficient lighting interventions." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2651.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.
ENGLISH ABSTRACT: Energy-efficient (EE) lighting projects form a substantial percentage of Demand Side Management (DSM) initiatives. These largely entail the exchange of one lighting technology for another more energy-efficient lighting technology. The DSM process typically involves a proposal from an Energy Services Company (ESCO) to retrofit an existing lighting technology with another on the property of a third party, the client. For scoping purposes, ESCOs perform energy savings calculations based on information obtained from the datasheets of the relevant lighting technologies. Such datasheet specifications rarely incorporate the effects of supply voltage fluctuations on energy consumption, which can impact on the accuracy of the savings calculations. Furthermore, modern EE lighting technologies such as Compact Fluorescent lamps (CFLs) employ power electronic circuitry that can in principle give rise to Quality of Supply (QoS) problems such as harmonic distortion. The usage profiles of artificial light fittings targeted in DSM interventions represent another important factor in determining the savings impacts of such projects. There is currently limited information on methodologies for obtaining such usage profiles. In practice, the scoping and impact verification of EE lighting projects are conducted using project-specific applications and spreadsheets that are time-consuming and error-prone. In view of the above-mentioned considerations, this investigation aims to address the lack of voltage-dependent energy consumption data and QoS impacts by conducting a laboratory investigation for all relevant lighting technologies, namely incandescent lamps, CFLs, tubular fluorescent lamps and high intensity discharge lamps. Appropriate mathematical models for the voltage-dependent energy consumption characteristics of these light technologies are derived from the measurements. The supply current harmonic distortion associated with the various lamp types are investigated, particularly with regard to neutral current loading caused by zero-sequence harmonics. Methodologies for obtaining accurate and reliable light usage data using commercially available data loggers are reviewed. A database structure is subsequently designed and implemented to store the information relevant for impact assessment, including the mathematical models of energy consumption, supply voltage profiles and light usage profiles. Finally, an Integrated Software Program (ISP) is developed to implement a methodology for assessing the savings impacts of practical EE lighting projects, using the database as the main input source. The ISP is tested by implementing a real case study. It is shown that the ISP yields accurate results for the case study considered in the evaluation.
AFRIKAANSE OPSOMMING: Energiedoeltreffende (ED) beligtingsprojekte vorm ‟n wesenlike persentasie van vraagkantbestuur (VKB) inisiatiewe. Dit het grootliks te doen met die vervanging van een beligtingstegnologie met ‟n ander meer energiedoeltreffende beligtingstegnologie. Die VKB proses behels normaalweg ‟n voorstel van Energie Dienste Maatskappy (EDM) om ‟n bestaande beligtingstegnologie te vervang met ‟n ander op die perseel van ‟n derde party, die kliënt. EDMs doen energiebesparingsberekeninge op grond van tegniese inligting wat vanaf die datablaaie van die betrokke beligtingstegnologieë verkry word. Hierdie datablad spesifikasies maak selde voorsiening vir die uitwerking van toevoerspanningfluktuasies op energieverbruik, wat die akkuraatheid van die besparingsberekeninge kan beïnvloed. Moderne ED beligtingstegnologieë soos kompakte fluoresseerlampe maak verder gebruik van drywingselektronika stroombane wat in beginsel kan lei tot kwaliteit van toevoer (KVT) probleme soos harmoniese distorsie. Die gebruiksprofiele van kunsmatige lig verteenwoordig nog ‟n belangrike faktor wat die besparingsimpakte van VKB projekte bepaal. Daar is tans beperkte informasie oor die metodologie om sulke gebruiksprofiele te verkry. In die praktyk word die verifiëring van die impak van ED beligtingsprojekte gedoen deur gebruik te maak van projekspesifieke programme en sigblaaie wat tydrowend is en geneig is om te lei tot foute. In die lig van die bogenoemde oorwegings, streef hierdie ondersoek om die tekort aan spanningsafhanklike energieverbruiksdata en KVT impakte te aan te spreek deur „n laboratorium ondersoek uit te voer vir al die relevante beligtingstegnologieë, naamlik filament lampe, kompakte fluoresseerlampe, buisvormige fluoresseerlampe en hoë-intensiteit ontladingslampe. Gepaste wiskundige modelle vir die spanningsafhanklikeenergieverbruik eienskappe van hierdie beligtingstegnologieë word vanuit die metings afgelei. Die harmoniese vervorming van die toevoerstroom van die verskillende beligtingstegnologieë word ondersoek, veral met verwysing tot neutraalstroombelasting wat veroorsaak word deur zero volgorde harmoniese ordes. Metodologieë vir die verkryging van akkurate en betroubare ligverbruikprofiele deur die gebruik van komersieel beskikbare dataversamelaars is nagegaan. ͗n Databasis struktuur is vervolgens ontwerp en geïmplementeer om die toepaslike inligting vir bepaling van die impakte te stoor, insluitend die wiskundige modelle vir energieverbruik, toevoerspanning-en ligverbruikprofiele. ‟n Geïntegreerdesagtewareprogram (GSP) is ontwerp om die metodologie vir die bepaling van besparingsimpakte van praktiese ED beligtingsprojekte te implimenteer, deur gebruik te maak die databasis as die hoofbron van insette. Die GSP is getoets deur ‟n werklike gevallestudie te implimenteer. Daar is bewys dat die GSP akkurate resultate lewer vir die gevallestudie wat in die evaluering gebruik is.

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Alsaeid, Khaled. "Sustainable lighting in offices : " How to save energy in officeswith a new lighting design ? "." Thesis, KTH, Ljusdesign, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280059.

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Sustainableefficient lighting is becoming seen as one of the mostimportant issues in the office environment In Sweden, energydemandfor lighting corresponds to 20 of the total electricity use in officebuildings 31 while lighting form on average 33 1 of the electricityconsumption in UK office buildingsThisthesis investigate how to make lighting in offices more sustainableand focus on energy efficiency, to save energy through creating guidelinesrelated to light source technologies lighting control systems and the userbehavior then apply those guidelines to an existing office throughsuggesting a new lighting designTheexisting office in this case is the ÅF company 10 th office floor locatedin Stockholm SwedenThisinvestigation methodology consist of 2 main parts literature review andProject ( study At the first part, methods used are a combination ofliterature review related to saving energy through sustainability in lightingand how light source technology lighting control systems and the effect ofuser behavior could help to create more energy efficient lighting systemsAtthe second part, methods used in the Project study analyzed throughqualitative methods through surveys in addition to quantitative methodthrough and personal observations The used methods helped to createguidelines for the new suggested lighting design for ÅF 10 th office floorpartTheResults shows that the new suggested lighting design saved up to31 96 than the current lighting situation3

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Martinovic, Zarko. "Design a PV – system for a large building." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-17539.

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This study presents the complete design of a photovoltaic system in commercial buildings. PV installation for Multiarena was primary used for internal consumption, rest of production will be sent according intentions in grid. Project presents theoretical demand calculations for building consumptions. According to the theoretical calculations numerical study has been provided by software Indoor Climate and Energy program. Detailed electric optimization strategy can be founded in project description, as well as the sizing of the photovoltaic installation and economic and financial issues related to it. Study presents several models for photovoltaic system and their economic analysis. Environmental issues can be founded at the end of the study.

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Andersson, Karl. "Intelligent control system for street lighting." Thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-28731.

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Street lighting is an important aspect of infrastructure in terms of both safety and comfort, but it also consumes a lot of energy. Unused light is a waste of energy, and without any form of control of the street lighting, this problem will continue to increase along with the expansion of road networks. The aim of this thesis is to propose an intelligent control system for street lighting that can adapt to the velocity of individual road users, to investigate if this could provide ways to improve the efficiency of street lighting. Previous control approaches include systems based on ambient light intensity or presence of road users, but no studies were found in which illumination adapts to the velocity of road users. The project involves three main steps, including a literature review, a system implementation and evaluation. In the proposed system, street lights cooperate to detect road users and calculate their velocities in order to adapt the illumination and make it follow their movement. It can be concluded from the evaluation results that the velocity readings help further optimize the illumination control in comparison to systems that do not consider velocity. The velocity readings make it possible to only illuminate the roadway in the direction of travel, while also adapting the distance of illumination to the recorded speed. The proposed control scheme is considered a viable solution for reducing the amount of unused light, consequently reducing the energy consumption of street lighting.

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He, Ya. "Energy efficiency and financing mechanisms : the case of energy efficient lighting retrofit in hotels." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648468.

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Ikuzwe, Alice. "Energy savings and maintenance optimization of energy-efficient lighting retrofit projects incorporating lumen degradation." Thesis, University of Pretoria, 2020. http://hdl.handle.net/2263/77401.

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The lighting retrofit method is adopted as one of the solutions to reduce lighting energy consumption and improve lighting quality in existing buildings. Lighting controls and energy-efficient light sources are used to achieve the goals of the lighting retrofit. Nowadays, Light-Emitting Diodes (LEDs) are replacing traditional lighting technology owing to their high efficiency and longevity. One of the advantages of LEDs is the controllability function, which allows users to set the light level according to their preferences. This saves more energy and satisfies users’ lighting needs. However, over time, the performance of lighting retrofit projects deteriorates subject to failure of the retrofitted lights. Therefore, to maintain the performance of lighting retrofit projects, maintenance must be planned and performed. The impacts of the users’ lighting level requirements on LEDs’ life characteristics and lighting system performance are investigated by using lighting controls. Light and occupancy sensors adjust artificial light to the light level required by users and detect the presence of users in the zones, respectively. Light sensors measure the average illuminance in the zones. The measured illuminance is compared to the users’ set illuminance; if the measured illuminance is higher than the users’ set illuminance, lamps are dimmed to meet users’ lighting preference, when the measured illuminance is less than the users’ set illuminance, lamps in the zone are replaced by new ones. The dimming level in each zone at each sampling interval is used to estimate the operating junction temperature, thereafter the degradation rate and luminous flux are calculated. Light levels at workspace are modelled using the lumen method. This model helps to quantify energy savings and predict when lamps will fail to deliver the required light levels. In existing studies, users’ lighting level requirements are neglected when investigating the lifetime of the lighting system; however, users’ profile and driving schemes affect the operating conditions of a lighting system. From the simulation results, it is noted that lumen output degradation increases when the user’s set illuminance is above the illuminance required under normal operating conditions and decreases when the user’s set illuminance is below the illuminance required under normal operating conditions. Increased lumen output degradation shortens the lifetime of LEDs and reduces energy savings, while decreased lumen output degradation extends the lifetime and increases energy savings. Generally, lighting retrofit projects contain a large lighting population; investigating when each lamp will fail can be time-consuming and costly. In this research, a mathematical model is formulated to model LEDs’ failure by analysing the statistical properties of the lumen degradation rates. Based on the statistical properties of the degradation rates, the cumulative probability of failure distribution and the survival function are modelled. The formulated survival function is incorporated into the lighting maintenance optimization problem to balance energy savings and maintenance costs. A case study carried out shows that, in 10 years, the optimal lighting maintenance plan would save up to 59% of lighting energy consumption with acceptable maintenance costs. It is found that the proposed maintenance plan is more cost-effective than full maintenance. It is concluded that lumen degradation failure should be considered when investigating the performance of lighting retrofit projects, as this may not only affect energy savings but also reduce the level of illumination, which can cause visual discomfort. The initial investment costs of LEDs are still a barrier to the implementation of LED lighting systems in residential buildings. Energy-efficiency projects often face hurdles to access capital investments because decision-makers and funders do not have enough information about operational savings the project can provide and specific financial requirements applied to efficiency investment. In this research, an optimization model is formulated to give decision-makers and funders detailed information about the performance and operational savings that a LED lighting retrofit project can offer and its economic viability. The lumen degradation failure model developed is used to monitor and estimate the energy savings, and the optimal maintenance plan is scheduled to replace failed lamps. In the existing studies, the economic analysis of the lighting retrofit projects is assessed based on lighting population decay due to burnout failure while in this research economic analysis is assessed by considering the lumen degradation failure. The case study results show that the substitution of halogen light bulbs with LED light bulbs could save up to 291.4 GWh of energy consumption, and reduce 273:92 103 tons of CO2 emissions over 10-year period. The optimization model formulated is effective to help the decision-makers and funders to quantify the savings and assess the economic viability of the LED lighting retroïnˇA˛t project. This optimization model can help the decision-makers and funders to make an informed decision.
Thesis (PhD (Electrical Engineering))--University of Pretoria, 2020.
Electrical, Electronic and Computer Engineering
PhD (Electrical Engineering)
Unrestricted

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Freymiller, Aaron Troy. "LED shipboard lighting a comparative analysis." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FFreymiller.pdf.

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Thesis (Master of Business Administration)--Naval Postgraduate School, December 2009.
Thesis Advisor(s): Dew, Nicholas. Second Reader: Hudgens, Bryan. "December 2009." Description based on title screen as viewed on January 28, 2010. Author(s) subject terms: Lighting, LEDs, shipboard lighting. Includes bibliographical references (p. 31-32). Also available in print.

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Kilpatrick, Yvonne Younis. "Daylighting and high efficiency lighting : the effects on heating and cooling loads." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/21810.

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Haeberlin, Marc W. "Adaptive Automotive Lighting Systems." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1480.

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Over the past few years, the use of LEDs within the automotive and avionic industries has increased due to their high efficiency, durability and wide range of light brightness. As the use of LEDs within these industries grows, a need for reliable, high performance drivers becomes more relevant. Companies are implementing LEDs for applications involving adaptive lighting or simple dimming features. This thesis shows implementation of various non-isolated analog converters integrated with digital dimmers to achieve these adaptive lighting systems. Adaptive lighting systems involve reading an input from an external source (brake pedal or steering wheel) and changing the brightness and/or pattern of the brake/headlights to convey more information to the driver and their surroundings. The analog converters will implement Linear Technology’s LED driver IC’s, while the digital dimmers comprise of microcontrollers and discrete components. The design, simulation, and hardware verification will showcase the abilities of these analog converters. Results will demonstrate the proposed applications for both adaptive front and brake lighting.

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Davoodi, Anahita. "Lighting simulation for a more value-driven building design process." Licentiate thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Byggnadsteknik och belysningsvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-31701.

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Concerns about global warming are increasing, hence, the urgency to cut carbon emissions. Reducing energy consumption, including lighting energy, is seen as the primary solution. Yet, solving the environmental factor should not come at the cost of other pillars of sustainable development. Rather, maximizing the total value of the building should be the focus. Maximizing value in the context of lighting entails improving the quality of the lighting. This study has investigated how lighting simulation could help in achieving better lighting quality. The aim of the thesis was defined as to understand the underlying architecture of lighting simulation and obtain an overview of its characteristics and applications as well as to study the use of current simulation tools. The theoretical background of lighting simulation (in the domain of Systems Engineering) was reviewed from the literature. This revealed the missing and imperfect links in the solution-to-value chain. The thesis suggests the use of a new base metric, Retinal Illuminance Map, as a solution, which in combination with black box simulation of a visual system can help repair this incomplete chain. The study of the current lighting simulation tools (Paper 1) revealed that illuminance-based metrics, luminance-based metrics, daylight availability metrics, and glare indexes are the most available performance metrics in existing lighting simulation tools. Based on usability, acceptability, availability, and previous references in the literature six software programs (Radiance, DAYSIM, Evalglare, DIALux, VELUX, and VISSLA) were selected and compared. It was found that no single tool could meet all the needs of a designer, hence, simulation tool(s) should be selected (or combined) according to the requirements of project goals and the stage of design. Building on these studies, applications of lighting simulation were identified and compiled in relation to different aspects, including performance metrics, stages of design, optimization, model integration, BIM, and parametric modeling. To obtain first-hand information about lighting designers’ experience, an online survey was conducted in Sweden (Paper 2). The results showed that lighting simulation programs were widely (90%) used in Sweden for analysis and/or rendering purposes. The majority of lighting designers considered both daylight and artificial light in their design. Factors such as ease-of use, simulation time and training had more weight than accuracy and the diversity of metrics in practitioner’s eyes. Surrogate modeling was identified as a solution for speeding up simulation time, which would also enable exploration of design solution space especially in the early design stage.

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Saršon, Bruno. "Energy consumption of manufacturing line with special emphasis on lighting system." Thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-11980.

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The main focus of this project is to investigate the energy consumption of the manufacturing lines in the car industry and look for the potential methods regarding energy saving. Special emphasis is put on the lighting technologies that can be used in the manufacturing processes. Two lighting technologies are tested in order to see which one has better performance and lower energy consumption. Fluorescent tube and LED tube are compared concerning illuminance, UV irradiance and power consumption. Economic evaluation is also conducted to exam the feasibilities replacing fluorescent tubes with LED tubes. Results of the study show that the LED tubes have much lower energy consumption than fluorescent tubes, produce more direct and „colder“ light, and have much lower UV irradiance. However, the payback period of LED is relatively long at current price situation. Since it is expected that the price of LED tubes will decrease in future, it is reasonable to predict that the LED technology will change the fluorescent one in many applications. The energy consumption has been estimated for two manufacturing lines which use different technologies to produce car underbodies. In order to identify the differences from the energy consumption point of view, some measurements are conducted, such as the consumption of electricity, compressed air, air for ventilation and cooling water. The measured results show a disproportion in the power consumption when the lines are in stand-by mode. This affects the energy consumption per produced unit significantly. The line that has a higher capacity and a lower power consumption in the stand-by mode has a lower energy consumption per produced unit when it is operating with lower production loading. So, in order to improve the energy efficiency, it is necessary that it works at as high volume as possible and to have the stand-by power consumption as low as possible.

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Phadke, Swanand Shripad. "Distributed Control for Smart Lighting." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274899902.

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Cizek, Christopher J. "Shipboard LED lighting a business case analysis." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FCizek.pdf.

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Thesis (Master of Business Administration)--Naval Postgraduate School, December 2009.
Thesis Advisors: Dew, Nicholas ; Mutty, John. "December 2009." Description based on title screen as viewed on January 26, 2010. Author(s) subject terms: LED lighting, solid state lighting, business case analysis. Includes bibliographical references (p. 81-83). Also available in print.

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Quintero, Jesús M. "Assessment of color quality and energy effciency : new insights for modern lighting. Part I : color quality in general lighting applications. Part II : mesopic photometry and street lighting." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/286285.

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This dissertation is divided in two parts: The first one deal with two main characteristics of the light sources for general lighting: Color quality and luminous efficacy. The second one deals with technical aspects of the mesopic photometry applied in street lighting. The first part begins by proposing a method to generate a new color rendering index, consisting of a three-dimensional visual index, which was named 3D-CRM. In order to illustrate the use of this method and index, three examples of lighting application were performed: Artwork, meat and fruit. The results show the goodness of the visual index 3D-CRM, that is also accompanied by a numeric index that indicates how the light source tested fits with the gamut of colors required by the specific lighting application. Complementing the preceding proposal, a statistical analysis was performed in order to define the parameters that make up the color quality of light sources. This statistical study was based on a collection of more than 100 real and ideal spectra of light sources. As a result, it was found that there is another variable that can complement the CRI index to indicate the color quality. This is the proposed index Oc (Optimal Color), which is based on the calculation of volumes generated with the spectrum of test source and several ideal spectra of reflectance to get optimal colors (high saturated colors) at different luminance levels. This fisrt part of the dissertation ends by proposing an index to generate a classification of light sources according to the requirements of the lighting application and the parameters such as correlated color temperature (CCT), luminous efficacy of radiation (LER) and color quality (CQ). It was demonstrated that the new proposed index called ECQ (Efficacy and Color Quality), is able to generate a useful ranking when assessing a collection of spectra, by giving a desired CCT and the weight that efficacy and color quality have in the lighting application studied. By using some examples of different lighting applications (i.e. different weights for color quality and efficacy) it was demonstrated how versatile and useful the ECQ index is. In the second part of this dissertation, a comparison of laboratory measurements between two different types of goniophotometers is made. The first one is a standard and photometer-based one, which uses the far-field for measurement. The second one has a more recent technology, uses a CCD camera and photometer as sensors, as well as the near field for measurement. This comparison exercise validates the measurements from the near-field goniophotometer, since up to moment, for this type of measurement and type of sensor (CCD camera), there are no laboratories with international traceability that can verify or calibrate this measurement system. The comparison exercise shows that there is a very good fit between both measures performed to standard light bulbs; therefore results of the near-field goniophotometer are validated. In recent measures performed at the Light and lighting laboratory of K.U. Leuven in Ghent, it was found that near field goniophotometer has a reduced luminous intensity dynamic range, for this reason exists an error measuring low luminous intensities in a luminarie with a sharp LID such as PAR30 Spot light bulb. After that, some aspects of the Recommended System for Mesopic Photometry Based on Visual Performance, CIE191:2010 are analysed. Finally it is presented a proposal of a new metrics called Energy Consumption Index (Qsa) intended to assessing possible energy savings on street lighting systems. In this chapter, by using the Energy Consumption Index an evaluation of three different hypothetical scenarios for a typical city is performed to demonstrate how flexible and intuitive this index is. These scenarios assess different characteristics of the light system such as light sources types, dimming systems and also the use of photopic and mesopic photometry.
Esta tesis se divide en dos partes: La primera trata con dos características principales de las fuentes de luz para la iluminación general: la calidad del color y de eficacia luminosa. El segundo se ocupa de los aspectos técnicos de la fotometría mesópica aplicada en el alumbrado público. La primera parte comienza proponiendo un procedimiento para generar un nuevo índice de rendimiento de color, que consiste en un índice visual tridimensional, llamado 3D-CRM. Con el fin de ilustrar el uso de este índice, se realizaron tres ejemplos de aplicación de iluminación: Arte, carnes y frutas. Los resultados muestran la bondad del índice visual 3D-CRM, que también se acompaña de un índice numérico que indica que tan bien una fuente de luz bajo prueba repolores la gama de colores para una aplicación de iluminación específica. Como complemento de la propuesta anterior, se realizó un análisis estadístico con el fin de definir los parámetros que componen la calidad de color de fuentes de luz. Este estudio estadístico se basa en una colección de más de 100 espectros reales e ideales de fuentes de luz. Como resultado, se encontró que hay otra variable que puede complementar el índice CRI para indicar la calidad del color. Este es el índice propuesto Oc (óptima del color), que se basa en el cálculo de los volúmenes generados con el espectro de la fuente de prueba y varios espectros ideal de reflectancia para obtener colores óptimos (colores de alta saturación) a diferentes niveles de luminancia. Esta primera parte termina proponiendo un índice para generar una clasificación de las fuentes de luz de acuerdo con los requisitos de la aplicación de iluminación y los parámetros tales como la temperatura de color correlacionada (CCT), la eficacia lumínica de radiación (LER) y la calidad de color (CQ ). Se demostró que el nuevo índice propuesto llamada ECQ (eficacia y calidad del color), es capaz de generar una clasificación útil en la evaluación de una colección de espectros, dando un CCT deseado y el peso que la eficacia y la calidad del color tienen en la aplicación de iluminación estudiado . Mediante el uso de algunos ejemplos de diferentes aplicaciones de iluminación (es decir, diferentes pesos para la calidad del color y la eficacia lumínica) se demostró la versatilidad y utilidad de este indicador. En la segunda parte de esta tesis, se hace una comparación de mediciones de laboratorio entre dos tipos diferentes de Goniofotómetros. El primero es uno estándar basada en el fotómetro, que utiliza el campo lejano para la medición. El segundo tiene una tecnología más reciente, utiliza una cámara CCD y fotómetro como sensores, así como el campo cercano para la medición. Este ejercicio de comparación valida las mediciones de la goniofotómetro de campo cercano, ya que hasta el momento, para este tipo de medición y el tipo de sensor (cámara CCD), no hay laboratorios con trazabilidad internacional que puede verificar o calibrar este sistema de medición. El ejercicio de comparación muestra que hay un muy buen ajuste entre las dos medidas realizadas a las bombillas estándar; Por lo tanto, los resultados del Goniofotómetro de campo cercano se validan. En recientes medidas realizadas en el laboratorio de luz e iluminación de K.U. Lovaina en Gante, se encontró que Goniofotómetro de campo cercano tiene un rango dinámico limitado para medición de intensidad luminosa, por esta razón existe un error de medición de bajas intensidades luminosas en una luminaria con una distribución aguda como por ejemplo un proyector de luz. Posteriormente se analizan, algunos aspectos del sistema recomendado para fotometría mesópica basado en el rendimiento visual, CIE191: 2010. Por último se presenta una propuesta de una nueva métrica llamada Índice de Consumo de Energía (Qsa) destinado a evaluar los posibles ahorros de energía en los sistemas de alumbrado público

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Chen, Leah Ya Li. "Transformative lighting strategies in Vancouver's urban context : using less, living better." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/4070.

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We are now facing the challenge of sustainable development. This thesis focuses on the building illumination of one downtown hospitality building, the Renaissance Vancouver Hotel (RVH), to demonstrate three options for sustainable development of architectural lighting. The thesis employs architectural exterior lighting based on the technology of light emitting diodes (LEDs) as a vehicle to demonstrate how to reduce the energy consumption and maintenance costs of decorative lighting on building façades via three transformative lighting strategies. These three transformative lighting strategies demonstrate three possibilities of applying LEDs to develop architectural creativity and energy sustainability for an outdoor decorative lighting system. The first transformation utilizes LEDs for the retrofit of existing compact fluorescent lights (CFLs) on the RVH’s façades and rooftop, in order to improve and diversify the building’s illumination in a sustainable manner. The second transformation optimizes the yearly programming of the new outdoor decorative LED lighting in accordance with differing seasonal and temporal themes in order to save energy, demonstrate architectural creativity via versatile lighting patterns, and systematically manage the unstable generation of renewable energy. The third transformation explores the potential of on-site electricity generation in an urban context instead of its purchase from BC Hydro. Photovoltaic (PV) panels will generate the electrical requirements of the RVH’s decorative exterior LED lighting. This transformation will transfer daytime solar energy to electricity for night outdoor building illumination; consequently, it can encourage outdoor activities in the nighttime for Vancouverites, and is a means of compensating for the limited daytime hours in Vancouver’s winter months.

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Bollinger, Joshua David. "Applications of solar energy to power stand-alone area and street lighting." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.umr.edu/thesis/pdf/Joshua_Bollinger_Thesis_09007dcc8031b71d.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed April 17, 2007) Includes bibliographical references (p. 88-91).

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Lehar, Matthew A. 1977. "A simulation tool for the estimation and optimization of electrical lighting energy." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/89905.

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Möttönen, Karin, and Mikael Hedén. "Human Centric Lighting : Automatisk belysningsvariation för hälsa, välbefinnande och elsparande." Thesis, Högskolan Dalarna, Energiteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:du-31324.

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Examensarbetet är en undersökning avseende implementering av Human Centric Lighting (HCL)- system i hemmamiljö. En litteraturstudie har genomförts om HCL, dess effekter på människan och LED-belysningens påverkan både på människan och miljön. För att få en bra praktisk grund gjordes även ett undersökande besök på Lindeborgsskolan i Malmö som i ett pilotprojekt har installerat HCL-system i ett klassrum. HCL handlar bland annat om att anpassa ljuset till människans varierande behov genom att variera intensitet (Lux) och färgtemperatur (Kelvin). Belysning har stor betydelse för människans välmående där en belysning med onaturlig spektralfördelning och flimmer kan leda till stress, sömnproblem samt att ögonen kan försämras. Ett bra varierande ljus kan däremot öka människans välmående, produktivitet och även ge en positivare inställning. En del forskning visar även på att HCL kan minska risken för årstidsbunden depression. Ett blått, mer intensivt ljus har en uppiggande effekt medan ett rött nerdämpat ljus verkar lugnande. Genom att utsätta kroppen för mycket blått ljus på förmiddagen men inte på eftermiddagen/kvällen gynnas kroppens cirkadiska cykel. Även rött ljus har visat sig ha en uppiggande effekt men påverkar inte den cirkadiska cykeln och kan med fördel användas även på kvällstid om en högre ljusintensitet behövs. Tre separata reglerbara belysningssystem har undersökts: Clas Ohlson WiFi Smart Bulb, IKEA trådfri belysning och Philips Hue White Ambiance. Kravet som ställdes för att belysningen skulle tas med i testet var att den skulle finnas tillgänglig i en relativt vanlig butik. Belysningen har testats både med avseende på ljusegenskaper samt energianvändning. En del av mätningarna utfördes med ett Ulbrichtklot på Clas Ohlsons ljuslaboratorium där färgspektrum, lumenvärde samt mycket annan information om ljuskällan kunde tas fram, samt med en handhållen spektrometer för att se flimmeravgivningen ifrån lampan vid olika inställningar. Energianvändningen undersöktes beträffande förändringar vid variation av färgtemperatur, intensitet och även i de fall som separat reglerutrustning krävdes. De tre belysningssystemen visade sig ha olika fördelar och nackdelar där en till slut valdes ut för att installeras i ett sovrum i utbildningsprojektet Dalarnas Villa. Baserat på ett tidigare gjort ljusschema, i en masteruppsats gjord av en ljusdesigner vid KTH, togs ett nytt ljusschema fram för sovrummet som förändrar ljusets intensitet och färgtemperatur för att främja den cirkadiska cykeln. Då författarna ser att detta är ett viktigt ämne så har varje möjlighet till att visa upp det installerade systemet tagits. Vid samtal med bland annat energirådgivare från Dalarna så har ett stort intresse visats. ” Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity (WHO 1946). Health should be at the centre of all societal planning because social inequalities in health are costly to the society and counteract sustainable development (Malmö stad 2013). It is one of the main conditions for individual development opportunities through education, work, social relationships and participation in the society (UN 1949). Health is a key to the other human rights and also constitutes a separate right (WHO 2008).” Sustainability issues for SSL (R. Karlsson et al. 2016)
This thesis is a study concerning the implementation of Human Centric Lighting (HCL)-systems in the home environment. A literature study has been conducted on light, its effects on humans and the influence of LED lighting on both humans and the environment. To obtain a good practical foundation, an investigative study visit was also made to Lindeborgsskolan in Malmö, which as a pilot project has installed HCL systems in a classroom. HCL is, among other things, about adapting the light to man's varying needs by varying intensity (Lux) and color temperature (Kelvin). Lighting is of great importance to human well-being where lighting with unnatural spectral distribution and flicker can lead to stress, sleep problems and that the eyes can deteriorate. A good variety of light can, on the other hand, increase human well-being, productivity and give a positive attitude. Some research also shows that HCL can reduce the risk of seasonal depression. A blue, more intense light has a wakeup effect, while a red low intensity light feels soothing. By exposing the body to much blue light in the morning but not in the afternoon / evening, the body's circadian cycle benefits. Even red light has been shown to have a stimulating effect but does not affect the circadian cycle and can be used even in the evening if a higher light intensity is needed. Three separate controllable lighting systems have been investigated: “Clas Ohlson Wi-Fi Smart Bulb”, “IKEA trådfri” and “Philips Hue White Ambiance”. The lighting has been tested both in terms of light quality and energy use. The light quality was examined partly with an “Ulbrichtklot” at Clas Ohlson's light laboratory where color spectrum as well as various other information could be obtained, and with a hand-held spectrometer to see the flicker output from the lamp at different settings. The energy consumption was investigated regarding variation of color temperature, intensity and even in cases where separate control equipment was required. The three lighting systems were shown to have different advantages where eventually the Philips Hue Ambience White was selected to be installed in a bedroom in the project villa Dalarnas Villa. Based on a previous master thesis, a light schedule was developed that changes the intensity and color temperature of light to promote the circadian cycle. As the authors see this as an important topic, every opportunity to show the installed system has been taken. A great deal of interest has been shown during discussions including Dalarna´s energy advisers. ” Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity (WHO 1946). Health should be at the centre of all societal planning because social inequalities in health are costly to the society and counteract sustainable development (Malmö stad 2013). It is one of the main conditions for individual development opportunities through education, work, social relationships and participation in the society (UN 1949). Health is a key to the other human rights and also constitutes a separate right (WHO 2008).” Sustainability issues for SSL (R. Karlsson et al. 2016)

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Slattery, Christopher P. "Analysis of rough surface lighting behaviors with OpenGL." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA397351.

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Thesis (M.S. in Modeling, Virtual Environments and Simulation (MOVES))--Naval Postgraduate School, Sept. 2001.
Thesis advisor(s): Baer, Wolfgang. "September 2001." Includes bibliographical references (p. 77). Also available in print.

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Campitiello, Francesca. "Progetto di Sistemi Innovativi per Smart Lighting." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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La tipologia di sensore analizzata nell'ambito di questa tesi si basa su tecnologia ad infrarossi (IR) per il rilevamento a distanza del movimento e della presenza di corpi che non sono all'equilibrio termico con l'ambiente monitorato, con importanti applicazioni negli ambiti legati alla gestione dell'illuminazione automatica. Tali dispositivi si prestano più in generale anche a soluzioni legate alla sorveglianza degli ambienti monitorati e alla regolazione degli stati di accensione e spegnimento di dispositivi di vario genere, come per esempio condizionatori ed emettitori di calore. In particolare, questa tesi si propone di sviluppare un automatismo dello stato di accensione/spegnimento basato sulla misura istantanea del gradiente di temperatura, in modo da rilevare eventuali alterazioni dell'ambiente osservato riconducibili alla presenza di persone. L'algoritmo che si vuole implementare, mira a fornire una soluzione efficiente di monitoraggio e gestione dell'ambiente prendendo in considerazione i differenti scenari che si potrebbero presentare. L'obiettivo consiste nell'individuare una strategia per rilevare il movimento e la presenza di un dato soggetto all'interno dell'ambiente monitorato, e predisporre di conseguenza l'accensione o lo spegnimento dei dispositivi di illuminazione con un'incisiva riduzione del consumo energetico. Perchè la soluzione proposta risulti efficace e affidabile, si rende necessaria un'analisi accurata delle caratteristiche del sensore e del suo comportamento in risposta a diversi fattori, quali il rumore e l'interferenza da parte di fattori ambientali esterni che possono alterare la misura.

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Burkholder, Frank. "TRNSYS modeling of a hybrid lighting system energy savings and colorimetry analysis /." 2004. http://catalog.hathitrust.org/api/volumes/oclc/56131138.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2004.
Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (p. 175-177).

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Ho, Cheng-Lung, and 何政隆. "Comparative Analysis of Industry - A Case Study of Taiwanese industry of energy-efficient lighting." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/05074728000279227709.

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碩士
國立臺灣科技大學
管理研究所
99
Can be said that in 2010 the first year of photoelectric lighting, the international trend of forming carbon reduction, reduce the 48 billion tons by 2050, global CO2 carbon dioxide. 2005 global carbon dioxide produced by lighting up millions of tons of 1900, equivalent to 70% of global carbon dioxide emissions of light vehicles. In order to reduce the impact of lighting on the environment, has gradually been disabled incandescent, light, lighting, control systems towards the development of high efficiency. Many experts and studies have reported that LED lighting applications in 2011 was the take-off year, so the LED lighting industry has clearly become a shining star industry, attracting all walks of life who have invested in this industry want a piece, so industry prospects is beyond doubt. But this promising industry, whether it be a future career prospects? Caught in this ecosystem, Taiwan LED lighting related companies why customized marketing to a firm market? In this study, industry analysis and marketing strategy point of view, induction appeared on stage in the marketing strategy could be developed as customized marketing. Re-use comparative analysis of two real cases to support personal views, and then finally use the marketing methods 5P practical proposals put forward at this stage are as follows: 1. Process: speed up the vertically integrated supply chain model 2. Promotion: the promotion of awareness of product marketing 3. Place: to change the traditional thinking, but also respect for the local access channel. 4. Patent: optimization of LED lighting technology deployment and management of intellectual property 5. Price: Innovative Products Marketing Model

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Wang, Chun-chao, and 王俊超. "A Research of Adaptability Analysis and Improvement for Lighting Energy Conservation Benefit Evaluation Methods." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/5huhws.

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碩士
國立臺灣科技大學
電機工程系
95
This thesis mainly established a practical energy conservation code for office lighting. Through gathering the codes from advanced countries, the advantages, disadvantages and adaptability were analyzed and compared with the relative codes based on lighting theory. The differences among current lighting energy conservation codes of advanced countries and Taiwan’s codes were examined and a proper reasonable evaluation proposal is presented in order to establish a more reasonable energy conservation codes office lighting. The researches started form a study on the parameters, electric energy consumption and luminous output efficacy, which are related to the light conservation. The average illuminations and unit light power density were selected to be the main factors to evaluate the light conservation performance. After a quantitatively evaluation based on the lighting parameters, a more practical and valuable conservation evaluation method were proposed to provide a batter lighting conservation code for indoor lighting design.

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WU, YU-HSIANG, and 吳宇翔. "Analysis of Electricity Cost and Design of Smart Street Lighting Based on Energy Storage System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/jhup9v.

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碩士
國立高雄應用科技大學
電機工程系博碩士班
106
In this thesis, the smart street lighting which combined with energy storage system, power measurement module and environment monitoring module has been developed. The smart street lighting not only analyzes the data of CO2, VOC, PM2.5, temperature and humidity, but also monitors the status of the smart street lighting. In addition, the energy storage system supplies power to the smart street lighting and is used as backup power. Based on the electricity cost and line subsidies of the Taiwan Power Company, this thesis estimates the cost of electricity for the smart street lighting in Kaohsiung city. By combining with different electricity rates, the street lighting and smart device is calculated to minimize the cost of electricity. If the energy storage system combines with the smart street lighting, it will supply power in the day and reduce the cost of electricity during the rush hour. It is also possible to save construction costs by installing energy storage systems, which can minimize the cost of electricity, and save time and huge expenditures on road construction. The smart street lighting will be effectively promoted.

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CHOU, YAN-LIN, and 周言霖. "Entrance-Gate Vehicle Detection based on Foreground Energy-Map Analysis under Various Lighting and Weather Conditions." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/88742723133035443458.

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碩士
國立臺北大學
資訊工程學系
104
Many automobile service shops are often equipped with a sensing coil to detect when a vehicle enters. Sensing coil can be classified as single sensing coil and duel sensing coil. The duel sensing coil can detect the wrong way driving. However, the single sensing coil often produces false alarms. For example, pedestrians and motorcycles might cross the sensing coil, or vehicles might reverse over or stop on the gate. To address these problems, camera equipment is utilized and installed near the entrance gate to detect the incoming vehicles. Hence, the purpose of this study is using the camera equipment to carry out image processing and detect vehicle in the field of view of the camera. The vehicle detection system is implemented in the automobile service shop. This system is implemented for outdoor environment where it needs to adapt to different environmental factors. The background subtraction method is utilized to extract foreground information of moving object from the camera field of view. This foreground image will be identified as vehicle object, if it meets the pre-defined requirements. The optical flow is also applied to determine the direct of the incoming vehicle. We calculate the central point of vehicle to avoid possible error from a vehicle staying too long in the gate way. Because the vehicle detection system needs to take a snapshot on the license plate, the foreground energy-map analysis is purposed to improve the reliability when we choose the correct snapshot. Finally, a 20 days testing is conducted in a real automobile service shop. The results are very positive, most of common errors are avoid. The camera system is designed to replace the sensing coil to reduce the hardware costs and increase the efficiency of the service. The system consists of four components: (1) Background Segmentation, (2) Center Allocation, (3) Optical Flow, and (4) Foreground Energy-Map Analysis.

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WU, CHI-SHUN, and 吳繼順. "Analysis of Consumer Behavior against Environment Protection and Green Energy Consumption-A Case Study of LED Lighting." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/47603720422801573955.

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碩士
朝陽科技大學
企業管理系碩士班
101
Abstract Over explored of nature resources, extended environment pollutions, upcoming shortage of energy resources, excessed CO2 emission , all these impacts have become a serious warning signal to human live on this planet, people are aware that environment protection and green energy development are the key issues to protect our next generation, otherwise, human will suffer from the impact when the nature resources are used up ,and that will lead to the war and death. With fast development of LED technology and further extended to lighting industry, which is another revolution for lighting, we can see in a very near future, there will be over 50% of lighting fixtures replaced by LED, which is a big change to lighting industry both for residential and commercial fields. This study is referring to the literatures and questionnaire survey,reviewing the Brand Image, Energy Saving Consumption, Buying Intention, Customer Value as factors, initiating all kinds of hypothesis, using Descriptive Statistic Analysis, Reliability and Validity Analysis, Factor Analysis and Path Analysis, to identify the results and all these have been proved as positive influences, hope these results will encourage consumer to buy and use LED light fixtures,and take into action for the enviriment protection and green energy consumption,so the worl will become better, also to be as reference for further study.

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LIN, MIN-JEN, and 林敏仁. "Performance Analysis of Energy Saving Improvement of Air Conditioning and Lighting System - Take C General Hospital as An Example." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/a8k8hd.

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碩士
開南大學
資訊學院碩士在職專班
106
Global warming causes the decrease of nature energy and resource. Environmental protection becomes the global trend. This study evaluates the before and after implementing of the improvement process of the air-conditioning and lighting system in C General Hospital, by comparing its annual power consumption, and also investigates the energy saving performance of the variable primary flow system of cooling water. In this study, regarding the current B4F air-conditioning equipment in the M Branch of C General Hospital, there are two 500 RT centrifugal chillers, one 300 RT screw chiller, three 1500 kg/hr gas steam boilers and four heats. The total annual power consumption counts: 4,431,889 KWH for electricity, 155,989 m³ for gas. For the lighting system, M Branch uses the traditional lamps, the total annual power consumption counts 214,109 KWH, the G park of C General Hospital uses the traditional lighting, the total annual power consumption counts 124,280 KWH, the P Campus of C General Hospital uses the traditional lighting, the total annual power consumption counts 65,153 KWH, the Hall C of C General Hospital uses the traditional lighting, the total annual power consumption counts 12,305 KWH, the C Comprehensive Rehabilitation Hospital also uses the traditional lighting, the total annual power consumption counts 28,606 KWH. The improvement process for M Branch air-conditioning system is to add the central monitoring system, to replace one 500 RT centrifugal chillers, and to add one 100 RT spiral heat pump. The system will be changed to one variable primary flow system, and be added a converter in the ice water pump and the cooling water pump. The reason to do so is to reduce operators' working load, to improve the equipment operating efficiency, and to decrease the energy use. As for the lighting system, the traditional light will be changed into LED light in the M Branch, G Park, P Campus, Hall C, and the C comprehensive rehabilitation Hospital of the C General Hospital, in order to enhance the wire line stability and to reduce its load. By means of the above methods, the air-conditioning and lighting energy consumption can be reduced, the cost can be saved as well, and the goal of power saving can be achieved.

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Tsai, Yu-suan, and 蔡禹宣. "Analyses the Cost of Lighting System and the Efficiency Evaluation on Energy Saving for Airport." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/2mq89d.

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碩士
國立高雄海洋科技大學
航運管理研究所
104
In Energy Audit Annual Report For Non-Productive Industries 2014, shows that the energy consumption which is based on the classification by use of building, the total electric consumption of air terminal is 293,646 thousand of kilowatt-hour. The electric flow based on the classification by use of building, the air-conditioning consumption takes up 53.92 % and the lighting consumption is 28.75 %, the lighting consumption is less than the air-conditioning consumption. With the ever-changing nature of technology, the requirement and quality of lighting system are wildly promote. To reckon roughly, the lighting consumption will add up 80 % by 2030. Besides, energy conservation from the lighting system first not only less investment、quick recovery and significant effect can also indirectly affect the air conditioning system to reduce power consumption. Therefore, this study is to build the model to fit the setup, consumption, repairment of the air terminal’s lighting system, to estimate the difference between traditional lamps and energy conservation lamps at the same lighting environment.This study is based on the car parks and entry luggage claim. The result shows that the cost of car parks, metal halide lamp takes up 53.52 % is the higher, and the setup cost of LED lamp takes up 45.30 % is the higher. The entry luggage claim’s cost of T5 fluorescent lamps takes up 60.23% is the higher, and the cost of LED lamp takes up 53.84% is the higher. With the Sensitivity analysis, on the section of car parks, when electricity price go up by 0.6, using LED lamp is better than metal halide lamp, when the price of LED lamp go down by 0.4, using light emitting diode is better than metal halide lamp,on the section of entry luggage claim, when electricity price go up by 0.6, usingT8 LED lamp is better than T5fluorescent lamps, when the price of LED lamp go down by 0.4, using T8 LED lamp is better than T5 fluorescent lamps.We hope the result can benefit the air terminal operators and airline industries.

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Oh, Sukjoon. "Origins of Analysis Methods in Energy Simulation Programs Used for High Performance Commercial Buildings." Thesis, 2013. http://hdl.handle.net/1969.1/151151.

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Current designs of high performance buildings utilize hourly building energy simulations of complex, interacting systems. Such simulations need to quantify the benefits of numerous features including: thermal mass, HVAC systems and, in some cases, special features such as active and passive solar systems, photovoltaic systems, and lighting and daylighting systems. Unfortunately, many high performance buildings today do not perform the way they were simulated. One potential reason for this discrepancy is that designers using the simulation programs do not understand the analysis methods that the programs are based on and therefore they may have unreasonable expectations about the system performance or use. The purpose of this study is to trace the origins of a variety of simulation programs and the analysis methods used in the programs to analyze high performance buildings in the United States. Such an analysis is important to better understand the capabilities of the simulation programs so they can be used more accurately to simulate the performance of an intended design. The goal of this study is to help explain the origins of the analysis methods used in whole-building energy simulation, solar system analysis simulation or design, and lighting and daylighting analysis simulation programs. A comprehensive history diagram or genealogy chart, which resolves discrepancies between the diagrams of previous studies, has been provided to support the explanations for the above mentioned simulation programs.

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Hwang, Hea Yeon. "An Investigation of Window and Lighting Systems using Life Cycle Cost Analysis for the Purpose of Energy Conservation in Langford Building A at Texas A&M University." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9499.

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Langford Building A forms part of the Langford Architectural Complex at Texas A & M University. Inefficient lighting fixtures and single pane windows in Langford Building A contribute to a considerable portion of the total cost of energy for this building. In the Southwestern United States, a building's windows can be responsible for a significant loss of energy. The windows and inefficient light bulbs can result in high utility costs and high labor charges from more frequent lighting maintenance than that required for efficient lighting. In Langford Building A, window system energy efficiency has not been improved since the building was constructed in 1977. This paper investigates the economic feasibility of using efficient lighting and window systems in Langford Building A. The cost for windows and new lighting tubes was analyzed and compared by using Life Cycle Cost Analysis. The payback periods, determined in this analysis, showed that more efficient lighting and window systems would reduce costs. As results of this analysis, the window film and LED lighting tube reduce building life cycle cost and short payback periods than other alternatives.

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Hu, Cheng-Hsiung, and 胡政雄. "The Effectiveness Analysis and Strategy of Energy-efficient Lighting in Developing a Low Carbon City – A Case on Electro-Magnetic Induction Lamps." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/12072319929663922643.

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碩士
國立中山大學
公共事務管理研究所
100
The background and motivation of this study are based on: (1) Energy saving and carbon emission reduction are the rising issues gaining more awareness and efforts worldwide. (2) Taiwan plans to build “low-carbon cities” in order to implement the policy of greenhouse gas reduction. (3) The most direct and practical way to reduce carbon emissions is by saving energy. (4) Everyone has to use illumination sources. (5) “Electro-Magnetic Induction Lamps” is a useful tool to achieve the goal of energy saving and carbon emission reduction. Thus the topic of this study is “The Effectiveness Analysis and Strategy of Energy-efficient Lighting in Developing a Low Carbon City – A Case on Electro-Magnetic Induction Lamps”. The objectives of this study are: 1. To analyze the characteristics of “Electro-Magnetic Induction Lamps” and their conformity with local and overseas energy-efficient lighting policies. 2. To analyze the effectiveness of lighting economics of the case companies before and after their adoption of “Electro-Magnetic Induction Lamps”. 3. To explore the possible obstacles and their solutions for lighting industry development of “Electro-Magnetic Induction Lamps” in the public sectors’ strategies to develop low-carbon cities in Taiwan. The main issues of this study are about energy-efficient lighting policies and the economical effectiveness of “Electro-Magnetic Induction Lamps”, which belong to policy research on energy-saving equipment and the lighting industry. Therefore three research methods: Literature Review, Case Study, and In-depth Interview were adopted to collect, compare, and analyze the data. The conclusions of this study are: 1. The characteristics of “Electro-Magnetic Induction Lamps” are in conformance with energy-efficient lighting policies in Taiwan. 2. To provide the analysis result of the case companies’ economic benefits after its adoption of “Electro-Magnetic Induction Lamps”. 3. To indicate the possible Dilemma of the lighting industry development of “Electro-Magnetic Induction Lamps” and the energy-efficient lighting policies for the strategies to develop low-carbon cities in Taiwan. According to above research outcomes, three suggestions have been further proposed: 1. Users must change their concepts and habits of lighting usage in order to cultivate good energy-saving habits. 2. Users must select appropriate illumination sources according to their needs in order to achieve most effectiveness of lighting economics. 3. According to the needs of appropriate illumination sources, the government should promote and subsidize the development and use of “Electro-Magnetic Induction Lamps”.

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HUANG, PENG-TAI, and 黃朋泰. "The Analysis of Illumination Quality and Energy Efficiency in Using LED lighting system - a Case Study of Jing Hong Examine Technology Co., Ltd." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/wyn82t.

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碩士
國立雲林科技大學
工業工程與管理系
106
Nowadays, the world is actively responding to the policy of energy-saving, environmental protection and carbon reduction. Lighting accounts for a large part of life and is closely related to people's lives. Therefore, it is necessary to pay attention to energy conservation and carbon reduction. In addition, A large proportion, how to achieve a balance between lighting quality and environmental protection and energy saving in both parts. Therefore, Jing Hong Examine Technology Co., Ltd., for example, to replace the traditional T5 fluorescent lamps, LED flat lamps replaced after the lighting quality changes, the application of field measurement results, analog LED lighting system after the analysis and prediction of elimination After the cost and benefit research and analysis, in this way, companies can assess the case of enterprises to replace the cost of LED lighting systems and recovery benefits, but also to compare the traditional lighting and LED lighting output efficiency and lighting quality. The case company simulated the replacement of LED lighting system, the overall electricity fell by 32%, while the overall office class illumination increased by 49% on average, in the experimental area overall illumination average 110% increase in order to allow other businesses to follow Energy-saving carbon reduction policy, clearly see the traditional lighting and LED lighting system differences. Keywords: LED lighting, T5 traditional fluorescent lamp, cost-benefit analysis, lighting quality, power consumption.

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41

Tacke, Friedrich Felix. "Energy efficiency in public lighting and stadium lighting." Master's thesis, 2014. http://hdl.handle.net/10362/20731.

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42

Hsu, Ming-Chi, and 許明祺. "Saving Energy on Wireless Emergency Lighting." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/12108294512373099978.

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碩士
臺北城市科技大學
嵌入式系統產業研發碩士專班
100
Taiwan is an island country. There are hurricane and earthquake frequently. The natural disasters comes often accompanied power outages. When the power outage occurred at night, the most important is to have emergency escape lighting on the road. In some key places, due to building alterations or decorating needs, there is no power for additional emergency lights. Because of the addition with open wire, it damages the decorating seriously. Without emergency lighting, it will delay the time to escape, may cause a greater loss of life and money. I begin to think about this, how emergency lights no longer needs the socket, and can be used for a long time. After thinking deeply, I thought a way to improve the existing emergency light by knowledge I had learned. It uses wireless broadcast technology to detect the power outage without power cord, and can be charged by solar cell. This creation improves the emergency light in current market. It makes it be used easier and humanely. It’s an intelligent emergency light to prevent the socket location where is inappropriate or there are too many electrical appliances which cause over loading. To make this creation to achieve working without power cord and detecting the power outage, there shall be a host to detect power. When the power outages, and the host notification emergency lights by radio waves immediately. The host can be placed any location with plug and has one-to-many function. These emergency lights have receiver to receive power-off signal. The emergency light is powered by solar panels to charge the battery. The solar panels can convert the fluorescent light into battery power in order to achieve charge without power cord and energy saving. In order to make emergency light working longer, it uses LED for the light source, and we can say that is multiple ways to achieve low cost and eco friendly. Users can be more convenient to close environment by save energy and reduce carbon dioxide emissions. I believe in the trend of environmental protection and high electricity prices, this creation will have the opportunity to replace the existing lighting equipment, and be widely placed.

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HSU, CHIEN-TUN, and 徐千惇. "LED energy-saving lighting control system." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/br9k2d.

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碩士
國立高雄應用科技大學
電子工程系碩士班
101
Lighting is an indispensable appliance to daily life of human. Therefore, the total average power consumption of every country around the world spending on lighting appliance is very appreciable. International Cooperation Sci-Tech Newsbrief (May 2010) mentions the lighting power consumed 20% rate in world energy usage. The requirement for lighting power will more increase to 80% in 2030, predicted by power experts. The lighting type includes commercial (70%), residential (26%) and street lighting (4%). Recently a lack of energy and rising of environmental awareness, lighting power consumption in the world expects to be reduced at least 38% by new lighting LED with energy saving and environmental concept, and combined with improvement of energy-saving technologies. Energy saving is not to have a negative effect on quality of life due to reducing power usage. However, energy shall be efficiently and appropriately applied. In this study, provides an efficient energy-saving lighting control system in relation to lighting environment and psychological reaction to achieve comfortable atmosphere and energy saving. The system structure consists of a microprocessor module, sensor module, LED driver modules, and LED lighting device. To achieve the wisdom dimming of the LED lighting device by inputting auto-dimming ideal parameters into the microprocessor module, and using output PWM signal of microprocessor module and sensor module. The actual experiment conclusion, the common lighting in the home between 9:00 and 17:00 after using Dimmer system that can reduce the energy consumption around 60% to 65% than before, and the lighting for business store can reduce energy consumption around 30% to 45% . In different environmental light and temperature, the system can automatically adjust the illuminance light as expected and color temperature based on various requirement of user. To prevent from much lighting power wasting and unnecessary full power load while power switch on. It can be fully applied in natural light, such as commercial interiors, signs, billboards and public electricity lights, automotive illumination, not only can save a considerable amount of electricity for lighting, but also It can achieve carbon reduction. Keywords: LED, Energy-saving ,Lighting

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44

Huang, Wen-Liang, and 黃文良. "Separated Green Energy LED Lighting Bulb." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/dfzyey.

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碩士
國立虎尾科技大學
光電與材料科技研究所
101
This research realizes the separation type green energy high power LED bulbs. The lamp module is divided into two parts which are the LED light source as well as the driving circuit. To prevent its thermal interactive effect, the thermal dissipation of main body was individual designed. Compared to the traditional type LED lamps, one part of the new design bulb can be replaced by a new one due to the above two parts have different lifetime. It is the design to reduce the cost and make a best use of the resource. In the experiment, the manufacture of the white LED was described as following. The 50nm-thick Ti/Au seed layer was evaporated on the AlN substrate by the e-beam evaporation. Subsequently, the Au metal layer was electroplated to increase the thickness where the electroplated AlN was as the substrate of the lighting unit. Then die-attach, wire bound, and coating the phosphor were sequent performed to finish the package of the LED module. The design of the heating holder was first simulated by the COMSOL software. Then design different structures and optimize the thermal effect. The realization of the thermal conduction was aluminum material processing. For the complete encapsulating bulb module and measurement verification, the experimental results show that in such complex structure, the separated green LED lamp of our design was powered at 14.4W, the maximum temperature at top bulb was 77oC, and at the bottom of the bulb was 60oC. After continuous light up for 300 hours, luminescence flux was decayed of 15%. It shows the good thermal performance.

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Shia, Yung-Fu, and 夏永富. "Multi-purpose Energy-saving LED Lighting System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/27754114499385688000.

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碩士
國立高雄應用科技大學
電子工程系
98
ABSTRACT Most of the current use of low luminous efficiency, low power factor of the luminous efficiency of conventional lighting fixtures not only low, but also the power consumption of a waste of limited resources, according to statistics from Taiwan Power Company and the Industrial Technology Research Institute that if Taiwan into existing traditional lighting replacement high efficiency energy saving lamps, then Taiwan will be able to save energy consumption by 20%, and 12.6 billion NT dollars a year can save the electricity bills and reduce 3.7 million tons of carbon emissions, 1171 million barrels of crude oil consumption and the equivalent of a nuclear power plant's annual capacity, energy savings is considerable. In this thesis, energy saving, environmental protection as the main appeal, to improve the current use of low luminous efficiency, low power factor, the conventional mercury lighting equipment, the use of high luminous efficiency, no radiation, low environmental pollution, longer service life of white LED light module group, combined with PFC control circuit, LED constant voltage, constant current drive circuit to produce high luminous efficiency, high power factor (> 0.95), wide voltage input range (90 ~ 265 VAC), to improve lighting device efficiency and service life, and can also facilitate the combination of different lighting environments demand a variety of LED light module to meet the high efficiency, energy saving, environmental protection and multi-purpose lighting needs. Keyword: energy saving, environmental protection, PFC control circuit, White light LED.

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Lai, Yu-Hsuan, and 賴昱軒. "Intelligent design of energy-efficient lighting systems." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/76245603977508465968.

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碩士
國立高雄應用科技大學
電子工程系
98
Solar energy and green energy have received much attention. Since the conversion efficiency of solar cell can not be increased at present, it is important to make good use of the derived electric power from solar cell. The aim of this thesis is to realize an intelligent design of energy-efficient lighting systems. It has the functions of energy production from solar cell, energy storage and lighting system. The pulse width modulation (PWM) signal controlled by micro programmed control unit (MCU) is used to charge the battery (or power storage unit). To achieve the balance of chemical reaction for efficient charging, we apply PWM signal with charging rest time to the battery. The charging process is detected by the voltage between the terminals of battery for lengthening the battery’s life. The light emitting diodes (LEDs) are used as lighting source of the design. By using an ambient light sensor, the micro programmed control unit (MCU) adjusts the currents in LEDs to achieve constant brightness. The LEDs are controlled by PWM signal of MCU to reduce the power consumption. The lighting system prior uses the energy from power storage unit then MCU will output the power switch signal to control the relay for changing the power supply path when the power storage unit can not supply enough voltage level. To verify the feasibility of our design, a energy-efficient lighting systems is realized. The experiment result shows the power-saving function. The designed system has the advantage of easy extensibility of solar cell, energy storage capability and lighting capability.

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Lin, Leh-Yang, and 林利揚. "The Practice Energy Savings on Lighting Systems." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/61384142689157297376.

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碩士
中原大學
電機工程研究所
97
Lighting has been a major part of electricity consumption in Taiwan. According to the statistics, revealed in the Energy Audit Annual Report for Non-manufacturing Industries, 2008, lighting takes about 12% in the total annual consumption of electricity in Taiwan. The present researches on eletricity savings focus majorly on the improvement of air-conditioning, and on lighting is the second major.The total annual consumption of electricity in Taiwan is 229.8 billion KWH and the consumption in lightning is 26 billion KWH (2008), which takes a percentage of 11.3%, second to the consumption in air-conditioning. Although there has been a large amount of projects related to energy savings conducted during the past decade, they are aimed mainly in the improvement of air-conditioning. As for lighting, it seems not the major concern. Due to the application of new technologies and the promotion of the ideas revolved in saving energy and natural resources, the improvement of lighting has achieved some siginificnet goals in the design and manufacturing of lighting equipment. The establishment of new energy-saving standards and related policies also increase the efficeincy in lighting. In addition to saving energy, the quality and comfortablity should also be concerned during the process of designing and manufacturing lighting equipments. This report discusses some crucial aspects related to the deisgn and development of lighting systems. This report, including 12 successful cases in saving energy and reducing energy consumption in lighting, suggests some possible ways to improve the efficiency of lighting. For example, replace the artificial light sources of low luminous efficiency with those of high luminous efficiency; use electronic ballasts rather than traditional magnetic ballasts; change old light tubes and clean the light equipment regularly to keep the tube working in a high-efficient situation. Moreover, it is a good way to save energy by using the natural sunlight during the daytime. There are also some devices that can used to improve the quality of light and reduce the consumption of energy, such as wide area switches, individual switches, timing controllers, photo sensors, thermostat switches, direct digital control (DDC)systems and two-way lighting control systems. With these technology, lighting can be more efficient

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Lin, Chia Hsin, and 林佳欣. "Energy-saving of Lighting on choosing behavior." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/11987814747978170497.

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49

Chii-Chang, Juang, and 莊啟昌. "Solar Energy Charging and Lighting Control System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/07449637128889029846.

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碩士
正修科技大學
電機工程研究所
101
In recent years, the Earth's greenhouse effect there is awareness of the environmental crisis and predicting stocks of fossil fuels shortage, makes more green energy to be taken seriously. This paper designed a Maximum Power Point Tracking (MPPT) solar charging system, battery charging, time switch function of automatic control, LCM displays the development of solar energy storage and lighting control system. Use the PIC18F452 and LT3652HV chips, with maximum power point tracking charge and battery protection, efficient use of solar energy, small size, easy to install. This thesis development of circuits, low cost, high efficiency, will be conducive to future applications of optoelectronics industry and open up new business opportunities.

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Chen, Yan-Cheng, and 陳彥呈. "Traditional Home Lighting and LED Lighting Efficiency Analysis." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/54543766613176979564.

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碩士
崑山科技大學
電機工程研究所
103
This thesis presents the analysis and comparison of traditional home lighting and LED lighting performance differences. First, survey the effectiveness of existing traditional lighting methods, and then describe the principle of LED light and the evolution of LED lighting technology. Although the LED is energy saving, but it still has a lot of technical problems and higher cost than that of the traditional lighting. This study is to explore the advantages and disadvantages of traditional home lighting and LED lighting on the comparative study by gathering information and analysis Finally, the advantages and disadvantages of the two lighting equipment and technology to explore the use of LED lighting or traditional lighting in the home lighting would be more humane and more in line with carbon reduction. With the recent promotion of energy saving and carbon reduction, making long life LED lighting has a broader outlook than the traditional home lighting.

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