Log in

Relevant bibliographies by topics / Green hydrogen energy systems / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Green hydrogen energy systems.

Dissertations / Theses on the topic 'Green hydrogen energy systems'

Author: Grafiati

Published: 29 June 2021

Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Green hydrogen energy systems.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Hendriks, Kjel. "Disruptive Innovation in Green Energy Sectors: An Entrepreneurial Perspective." Thesis, Jönköping University, IHH, Företagsekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-52853.

Full text

Abstract:

Background: Green hydrogen energy systems can address environmental and societal concerns within the energy sector. Therefore, increased attentions from both public and private stakeholders has led to the general perception that hydrogen systems can serve as a disruptive innovation. Given that disruption innovation theory has seen increased entrepreneurial involvement over recent years, the study focuses on assessing the role of green entrepreneurs within the implementation of hydrogen systems through cross-collaborative efforts and disruptive innovation drivers. Purpose: The development o

APA, Harvard, Vancouver, ISO, and other styles

2

Gazey, Ross Neville. "Sizing hybrid green hydrogen energy generation and storage systems (HGHES) to enable an increase in renewable penetration for stabilising the grid." Thesis, Robert Gordon University, 2014. http://hdl.handle.net/10059/947.

Full text

Abstract:

A problem that has become apparently growing in the deployment of renewable energy systems is the power grids inability to accept the forecasted growth in renewable energy generation integration. To support forecasted growth in renewable generation integration, it is now recognised that Energy Storage Technologies (EST) must be utilised. Recent advances in Hydrogen Energy Storage Technologies (HEST) have unlocked their potential for use with constrained renewable generation. HEST combines Hydrogen production, storage and end use technologies with renewable generation in either a directly conne

APA, Harvard, Vancouver, ISO, and other styles

3

Thekkenthiruthummal, Kunjumon Razif, and Baby Rinto Cheruvil. "Feasibility Study of Green Hydrogen PowerGeneration in Kavaratti Island, India." Thesis, Högskolan i Halmstad, Akademin för företagande, innovation och hållbarhet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-44617.

Full text

Abstract:

Controlling greenhouse gas emissions is essential by the introduction of renewable energysources. The island Lakshadweep in India has been dependent on non-renewable generationof electricity over the years. To make them self-sufficient in the energy sector, theintroduction of green hydrogen from wind and solar sources and its storage for sustainablefuture is a great initiative. The factors such as renewable sources, electrolyzer technology,fuel cells included in hydrogen production are optimized for this project in a cost-effectivemanner over the existing diesel power generation. The cost comp

APA, Harvard, Vancouver, ISO, and other styles

4

Gammon, Rupert. "The integration of hydrogen energy storage with renewable energy systems." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/7847.

Full text

Abstract:

This thesis concerns the design, implementation and operation of a hydrogen energy storage facility that has been added to an existing renewable energy system at West Beacon Farm, Leicestershire, UK. The hydrogen system consists of an electrolyser, a pressurised gas store and fuel cells. At times of surplus electrical supply, the electrolyser converts electrical energy into chemical energy in the form of hydrogen. This hydrogen is stored until there is a shortage of electrical energy to power the loads on the system, at which point it is reconverted back to electricity by the process of revers

APA, Harvard, Vancouver, ISO, and other styles

5

Korpås, Magnus. "Distributed Energy Systems with Wind Power and Energy Storage." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-132.

Full text

Abstract:

<p>The topic of this thesis is the study of energy storage systems operating with wind power plants. The motivation for applying energy storage in this context is that wind power generation is intermittent and generally difficult to predict, and that good wind energy resources are often found in areas with limited grid capacity. Moreover, energy storage in the form of hydrogen makes it possible to provide clean fuel for transportation. The aim of this work has been to evaluate how local energy storage systems should be designed and operated in order to increase the penetration and value of win

APA, Harvard, Vancouver, ISO, and other styles

6

Janon, Akraphon, and s2113730@student rmit edu au. "Wind-hydrogen energy systems for remote area power supply." RMIT University. Aerospace, Mechanical & Manufacturing Engineering, 2010. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20100329.094605.

Full text

Abstract:

Wind-hydrogen systems for remote area power supply are an early niche application of sustainable hydrogen energy. Optimal direct coupling between a wind turbine and an electrolyser stack is essential for maximum electrical energy transfer and hydrogen production. In addition, system costs need to be minimised if wind-hydrogen systems are to become competitive. This paper investigates achieving near maximum power transfer between a fixed pitched variable-speed wind turbine and a Proton Exchange Membrane (PEM) electrolyser without the need for intervening voltage converters and maximum power poi

APA, Harvard, Vancouver, ISO, and other styles

7

Monaghan, Rory F. D. (Rory Francis Desmond). "Hydrogen storage of energy for small power supply systems." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32361.

Full text

Abstract:

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.<br>Includes bibliographical references (p. 91-92).<br>Power supply systems for cell phone base stations using hydrogen energy storage, fuel cells or hydrogen-burning generators, and a backup generator could offer an improvement over current power supply systems. Two categories of hydrogen-based power systems were analyzed: Wind-hydrogen systems and peak-shaving hydrogen systems. Modeling of base station requirements and alternative power supply system performance was carried out using MATLAB. Final res

APA, Harvard, Vancouver, ISO, and other styles

8

Liu, Jiashang. "Resource Allocation and Energy Management in Green Network Systems." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587577356321898.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Chidziva, Stanford. "Green hydrogen production for fuel cell applications and consumption in SAIAMC research facility." University of Western Cape, 2020. http://hdl.handle.net/11394/7859.

Full text

Abstract:

Philosophiae Doctor - PhD<br>Today fossil fuels such as oil, coal and natural gas are providing for our ever growing energy needs. As the world’s fossil fuel reserves fast become depleted, it is vital that alternative and cleaner fuels are found. Renewable energy sources are the way of the future energy needs. A solution to the looming energy crisis can be found in the energy carrier hydrogen. Hydrogen can be produced by a number of production technologies. One hydrogen production method explored in this study is electrolysis of water.

APA, Harvard, Vancouver, ISO, and other styles

10

Björkman, Katarina. "Hydrogen gas in Sweden : Is hydrogen gas a viable energy carrier in Sweden?" Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-49015.

Full text

Abstract:

Detta arbete innefattar att undersöka hur vätgas kan användas i Sverige, dels för energilagring men även som bränsle för fordon. Den ökande användningen av varierande förnyelsebara energikällor i den svenska energimixen innebär problem med stabilitet i kraftnätet, något som energilagring kan vara en lösning på. Samtidigt finns mål att fasa ut fossila energikällor, exempelvis diesel och bensin, något som transportsektorn är mycket beroende av. Enligt intervjuerna så är ett av de stora hindren för att implementera vätgas i Sverige att det saknas standarder och regelverk. Likaså framkommer det at

APA, Harvard, Vancouver, ISO, and other styles

11

Rossi, Gianmarco. "modeling of proton exchange membrane water electrolyzer for green hydrogen production from solar energy." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

Find full text

Abstract:

Hydrogen is considered one of the means by which to store energy coming from renewable and intermittent power sources. With the growing capacity of renewable energy sources, a storage system is required to not waste energy. PEM electrolysis provides a sustainable solution for the production of hydrogen and is well suited to couple with energy sources such as solar and wind. This work reports the development of simulation software to estimate the performance of a proton exchange membrane electrolyzer working at atmospheric or low pressure conditions connected to a solar energy source. The ele

APA, Harvard, Vancouver, ISO, and other styles

12

Puranik, Sachin V. "Control of Fuel Cell Based Green Energy Systems for Distributed Generation Applications." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253476960.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Keville, Kurt (Kurt Lawrence). "Green HPC : a system design approach to energy-efficient datacenters." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/67557.

Full text

Abstract:

Thesis (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 63-65).<br>Green HPC is the new standard for High Performance Computing (HPC). This has now become the primary interest among HPC researchers because of a renewed emphasis on Total Cost of Ownership (TCO) and the pursuit of higher performance. Quite simply, the cost of operating modern HPC equipment can rapidly outstrip the cost of acquisition. This phenom

APA, Harvard, Vancouver, ISO, and other styles

14

Jagtap, Rohan Surendra, and Smruti Smarak Mohanty. "Sustainable Manufacturing: Green Factory : A case study of a tool manufacturing company." Thesis, Linköpings universitet, Energisystem, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-168688.

Full text

Abstract:

Efficient use of resources and utility is the key to reduce the price of the commodities produced in any industry. This in turn would lead to reduced price of the commodity which is the key to success. Sustainability involves integration of all the three dimensions: environmental, economic and social. Sustainable manufacturing involves the use of sustainable processes and systems to produce better sustainable products. These products will be more attractive, and the industry will know more about the climate impact from their production. Manufacturing companies use a considerable amount of ener

APA, Harvard, Vancouver, ISO, and other styles

15

Bimbo, Nuno Maria Marques dos Santos. "Modelling and analysis of hydrogen storage in nanostructured solids for sustainable energy systems." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.577745.

Full text

Abstract:

As societies depart from current economic models which are built around affordable and easily accessible fossil fuels to energy systems increasingly based on the use of renewable energies, the need grows for a wide-scale clean and sustainable energy vector. Hydrogen fulfils most of the needed equirements, but implementation and large scale penetration, especially for mobile applications, is precluded by technical issues. Among these, arguably the most complex is how to safely, economically and efficiently store hydrogen. Storage in a porous material offers some attractive features, which inclu

APA, Harvard, Vancouver, ISO, and other styles

16

Tlili, Olfa. "Hydrogen systems : what contribution to the energy system? Findings from multiple modelling approaches." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLC083/document.

Full text

Abstract:

L'hydrogène… Cet élément simple et très abondant pourrait être un contributeur clé à la transition énergétique, mais dans quelles conditions technico-économiques et politiques ? Cette thèse propose une contribution à l'évaluation de la faisabilité de pénétration de l'hydrogène dans le système énergétique, en mettant en oeuvre différents modèles qui permettent des éclairages complémentaires. Elle se concentre sur l’hydrogène bas carbone, obtenu par électrolyse de l’eau.Notre analyse multirégionale qui porte sur le contexte énergétique européen, américain, chinois et japonais (régions qui présen

APA, Harvard, Vancouver, ISO, and other styles

17

Reddy, Sharath. "Energy and Exergy Analysis of Chemical Looping Systems for Hydrogen and Sulfur Recovery." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1556069387739902.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

エドアード, ラマスホルヘ, and Jorge Eduardo Lamas de Anda. "Conceptual study on the energy independence of fuel cell cogeneration systems using solar energy." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12981850/?lang=0, 2016. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12981850/?lang=0.

Full text

Abstract:

この論文では従来電力系統から自立的に利用出来る太陽エネルギー及び燃料電池コジェネレーションシステムの徹底的な解析が述べられている。開発した水素マイクログリッドの燃料依存を最小化にする数理モデルを利用し日本社会でのさまざまなシナリオのシミュレーションが行なわれた。こういうシステムの実現性が従来水素燃料供給方法の審査及び日本の中型離島の事例研究で評価された。経済的な分析によって石油の価格が高い遠隔な地域では水素マイクログリッドは競争力があると分かった。<br>This thesis presents a thorough analysis on energy supply systems using solar energy and fuel cell cogeneration systems that can operate reliably and independently from the main power grid. A mathematical model to maximize fuel independence for hydrogen micro-grids is developed and simulated for various scenarios in Japanese communities. The viability of implementing

APA, Harvard, Vancouver, ISO, and other styles

19

Miró, Richart Paula. "Hydrogen-Abstraction, Energy Transfer and Exciplex Formation in Photoactive Systems Based on Bile Acids." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/64084.

Full text

Abstract:

[EN] Bile acids are a family of amphiphilic steroids that play a pivotal role in physiological functions such as elimination of cholesterol or solubilization of lipids. Chemically, they share a steroidal skeleton with an unusual cis fusion between rings A and B, a short lateral chain ending in a carboxylic acid moiety and different number of hydroxyl groups on the alpha-face. Hence, bile acids offer a versatile architecture that can be used to investigate photophysical processes of interest such as hydrogen atom transfer, through-bond energy trasfer, through-bond exciplex formation and DNA ph

APA, Harvard, Vancouver, ISO, and other styles

20

Yao, Miao. "Exploiting Spatial Degrees-of-Freedom for Energy-Efficient Next Generation Cellular Systems." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/77402.

Full text

Abstract:

This research addresses green communication issues, including energy efficiency, peak-to-average power ratio (PAPR) reduction and power amplifier (PA) linearization. Green communication is expected to be a primary goal in next generation cellular systems because it promises to reduce operating costs. The first key issue is energy efficiency of distributed antenna systems (DASs). The power consumption of high power amplifiers (HPAs) used in wireless communication systems is determined by the transmit power and drain efficiency. For unequal power allocation of orthogonal frequency division mu

APA, Harvard, Vancouver, ISO, and other styles

21

Alfredsson, Eva. "Green consumption energy use and carbon dioxide emission." Doctoral thesis, Umeå universitet, Kulturgeografi, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-80.

Full text

Abstract:

The aim of this thesis is to explore the quantitative potential to reduce energy requirements and CO2 emissions through changed patterns of consumption, given unchanged levels of consumption expenditure. The thesis question is analysed using a systems analysis approach which in this case means that life cycle assessment data on energy requirements and CO2 emissions related to household consumption are combined with a financial and behavioural analysis to make sure that the budget constraint is kept and that both the first and second order effects of adopting a green consumption pattern are ana

APA, Harvard, Vancouver, ISO, and other styles

22

Coma, Arpón Julià. "Green roofs and vertical greenery systems as passive tools for energy efficiency in buildings." Doctoral thesis, Universitat de Lleida, 2016. http://hdl.handle.net/10803/399726.

Full text

Abstract:

D'acord amb les Perspectives de Tecnologia Energètica del 2016, la demanda d'energia primària i les emissions de carboni han de reduirse en més d'un 30% per a l'any 2050. Una manera d'aconseguir-ho, es per mitjà de regulacions que millorin el rendiment tèrmic de la pell de l'edifici. En aquest context, durant l’última dècada els sostres verds i sistemes verds verticals implementats en la pell dels edificis han esdevingut prometedors sistemes passius d’estalvi d'energètic i de reducció de les emissions de CO2 en els entorns urbans. Per tant, els principals objectius d'aquesta tesi doctoral só

APA, Harvard, Vancouver, ISO, and other styles

23

ÖHMAN, AXEL. "Green hydrogen production at Igelsta CHP plant : A techno-economic assessment conducted at Söderenergi AB." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299434.

Full text

Abstract:

The energy transition taking place in various parts of the world will have many effects on the current energy systems as an increasing amount of intermittent power supply gets installed every year. In Sweden, just as many other countries, this will cause both challenges and opportunities for today´s energy producers. Challenges that may arise along with an increasingly fluctuating electricity production include both power deficits at certain times and regions but also hours of over-production which can cause electricity prices to drop significantly. Such challenges will have to be met by both

APA, Harvard, Vancouver, ISO, and other styles

24

Sanchez, Antonio. "Energy management in electric systems fed by fuel cell stacks." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00590217.

Full text

Abstract:

The growth of distributed energy resources together with the incorporation of new technologies in the generation and storage of energy are imposing new control and operational strategies. Due to its storage capability and that it is considered to be clean energy; fuel cell (FC) is one of the most promissory technologies as a stationary energy source in micro grids and also in transportation applications. Therefore, two main issues are addressed in this work; the conception, design, and setup of a fully instrumented test bench for proton exchange membrane (PEM) FC stacks and the design and expe

APA, Harvard, Vancouver, ISO, and other styles

25

Martino, Drew J. "Evaluation of Electrochemical Storage Systems for Higher Efficiency and Energy Density." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/470.

Full text

Abstract:

Lack of energy storage is a key issue in the development of renewable energy sources. Most renewables, especially solar and wind, when used alone, cannot sustain a reliably constant power output over an extended period of time. These sources generally generate variable amounts of power intermittently, therefore, an efficient electrical energy storage (EES) method is required to better temporally balance power generation to power consumption. One of the more promising methods of electrical energy storage is the unitized regenerative fuel cell (UFRC.) UFRCs are fuel cells that can operate in a c

APA, Harvard, Vancouver, ISO, and other styles

26

Suamir, I. Nyoman. "Integration of trigeneration and CO2 based refrigeration systems for energy conservation." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/6971.

Full text

Abstract:

Food retail with large supermarkets consumes significant amounts of energy. The environmental impact is also significant because of the indirect effect from CO2 emissions at the power stations and due to the direct effect arising from refrigerant leakage to the atmosphere. The application of trigeneration (local combined heat, power and refrigeration) can provide substantial improvements in the overall energy efficiency over the conventional supermarket energy approach of separate provision of electrical power and thermal energy. The use of natural refrigerants such as CO2 offers the opportuni

APA, Harvard, Vancouver, ISO, and other styles

27

Estaña, Garcia Guillermo, and Julian Iñigo Ruiz. "Feasibility of converting a Science Park in a cold climate into an “off-grid” facility using renewable energies and seasonal storage systems." Thesis, Högskolan i Gävle, Avdelningen för byggnadsteknik, energisystem och miljövetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-30417.

Full text

Abstract:

The collateral effects of fossil fuels push humanity to seek solutions to these adversities. Energy efficiency and renewable energies have gone from being almost imaginary concepts to necessary. Several studies have shown that self-sufficiency through photovoltaic systems and wind energy is possible. In addition, it is necessary a storage of the surpluses of both since it increases notably the efficiency of these systems and supposes to the short/medium term a saving of money in the consumer. Due to the mentioned before, the aim of the thesis is to convert a science park located in a cold clim

APA, Harvard, Vancouver, ISO, and other styles

28

Reissner, Alexander. "Metal Hydrides as Enabling Technology for the use of Hydrogen-Based Energy Storage Systems on Telecommunication Satellites." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-229226.

Full text

Abstract:

Next generation telecommunication satellites will demand an increasing amount of power in the range of 30 kW or more within the next 10 years. Battery technology that can sustain 30 kW for an eclipse length of up to 72 minutes will represent a major impact on the total mass of the satellite, even with new Li-ion battery technologies. Regenerative fuel cell systems (RFCS) were identified years ago as a possible alternative to rechargeable batteries. Nevertheless, one major drawback was identified by several independent system studies, namely the need to dissipate large amounts of heat from the

APA, Harvard, Vancouver, ISO, and other styles

29

Orgerie, Anne-Cécile. "An Energy-Efficient Reservation Framework for Large-Scale Distributed Systems." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2011. http://tel.archives-ouvertes.fr/tel-00672130.

Full text

Abstract:

Over the past few years, the energy consumption of Information and Communication Technologies (ICT) has become a major issue. Nowadays, ICT accounts for 2% of the global CO2 emissions, an amount similar to that produced by the aviation industry. Large-scale distributed systems (e.g. Grids, Clouds and high-performance networks) are often heavy electricity consumers because -- for high-availability requirements -- their resources are always powered on even when they are not in use. Reservation-based systems guarantee quality of service, allow for respect of user constraints and enable fine-grain

APA, Harvard, Vancouver, ISO, and other styles

30

Wang, Qiang. "Performance and power modeling of GPU systems with dynamic voltage and frequency scaling." HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/814.

Full text

Abstract:

To address the ever-increasing demand for computing capacities, more and more heterogeneous systems have been designed to use both general-purpose and special-purpose processors. The huge energy consumption of them raises new environmental concerns and challenges. Besides performance, energy efficiency is another key factor to be considered by system designers and consumers. In particular, contemporary graphics processing units (GPUs) support dynamic voltage and frequency scaling (DVFS) to balance computational performance and energy consumption. However, accurate and straightforward performan

APA, Harvard, Vancouver, ISO, and other styles

31

Gidén, Hember Amanda. "Understanding Green Energy Technology : Learning Processes in the Development of the Ground Source Heat Pump." Thesis, Uppsala universitet, Byggteknik och byggd miljö, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-414021.

Full text

Abstract:

The aim of this thesis is to increase the understanding of small-scale green energy technology development. In the transition towards a fossil free energy system, heat pumps are a low emission heating alternative. Contrary to other types of new small-scale green energy technology such as solar cells and electric vehicles, heat pumps are established on the Swedish market, with more than half the share of single family buildings. This makes it possible to study an example of a mature technology, and that knowledge could be used in the development and deployment of other technologies with similar

APA, Harvard, Vancouver, ISO, and other styles

32

Guan, Tingting. "Biomass-fuelled PEM FuelCell systems for small andmedium-sized enterprises." Doctoral thesis, KTH, Energiprocesser, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176633.

Full text

Abstract:

Biomass-fuelled proton exchange membrane fuel cells (PEMFCs) offer asolution for replacing fossil fuel for hydrogen production. Through using thebiomass-derived hydrogen as fuel, PEMFCs may become an efficient andsustainable energy system for small and medium-sized enterprises. The aim ofthis thesis is to evaluate the performance and potential applications of biomassfuelledPEMFC systems which are designed to convert biomass to electricity andheat. Biomass-fuelled PEMFC systems are simulated by Aspen plus based ondata collected from experiments and literature.The impact of the quality of the h

APA, Harvard, Vancouver, ISO, and other styles

33

Mei, Xinxin. "Energy conservation techniques for GPU computing." HKBU Institutional Repository, 2016. https://repository.hkbu.edu.hk/etd_oa/298.

Full text

Abstract:

The emerging general purpose graphics processing units (GPGPU) computing has tremendously speeded up a great variety of commercial and scientific applications. The GPUs have become prevalent accelerators in current high performance clusters. Though the computational capacity per Watt of the GPUs is much higher than that of the CPUs, the hybrid GPU clusters still consume enormous power. To conserve energy on this kind of clusters is of critical significance. In this thesis, we seek energy conservative computing on the GPU accelerated servers. We introduce our studies as follows. First, we disse

APA, Harvard, Vancouver, ISO, and other styles

34

Uluoglu, Arman. "Solar-hydrogen Stand-alone Power System Design And Simulations." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611884/index.pdf.

Full text

Abstract:

In this thesis, solar-hydrogen Stand-Alone Power System (SAPS) which is planned to be built for the emergency room of a hospital is designed. The system provides continuous, off-grid electricity during the whole period of a year without any external electrical power supply. The system consists of Photovoltaic (PV) panels, Proton Exchange Membrane (PEM) based electrolyzers, PEM based fuel cells, hydrogen tanks, batteries, a control mechanism and auxiliary equipments such as DC/AC converters, water pump, pipes and hydrogen dryers. The aim of this work is to investigate the optimal system configu

APA, Harvard, Vancouver, ISO, and other styles

35

Aquino, Eddie Villanueva. "PREDICTING BUILDING ENERGY PERFORMANCE: LEVERAGING BIM CONTENT FOR ENERGY EFFICIENT BUILDINGS." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1077.

Full text

Abstract:

Reducing and managing the environmental impacts of building structures has become a priority of building stakeholders and within the architecture, engineering and construction (AEC) community; although, conflicting approaches and methods to combat the issues are present. For example, green building standards are widespread throughout the world; however each one has its own characteristics and consequently its own specific requirements. While all have proven to be effective rating systems and have similar requirements, the distinguishing characteristic that separates them is their treatment of

APA, Harvard, Vancouver, ISO, and other styles

36

Gibrael, Nemir, and Hamse Hassan. "HYDROGEN-FIRED GAS TURBINE FOR POWER GENERATION WITH EXHAUST GAS RECIRCULATION : Emission and economic evaluation of pure hydrogen compare to natural gas." Thesis, Mälardalens högskola, Framtidens energi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-42306.

Full text

Abstract:

The member states of European Union aim to promote the reduction of harmful emissions. Emissions from combustion processes cause effects on human health and pose environmental issues, for example by increasing greenhouse effect. There are two ways to reduce emissions; one is to promote renewable energy sources and the other to utilize more effectively the available fossil fuels until a long-term solution is available. Hence, it is necessary to strive for CO2 mitigation technologies applied to fossil fuels. Low natural gas prices together with high energy efficiency have made gas turbines popul

APA, Harvard, Vancouver, ISO, and other styles

37

Rahman, Khondokar Mizanur. "Determination of the potential energy contribution and green house gas mitigation of small and medium anaerobic digester systems in Bangladesh." Thesis, University of Brighton, 2011. https://research.brighton.ac.uk/en/studentTheses/efaddcb5-799a-4fb5-8bcd-d8a7736178db.

Full text

Abstract:

This research is to determine the anaerobic digestion (AD) potential and green house gas mitigation of small and medium anaerobic digester systems in Bangladesh which could provide energy for the country's need. This was determined for two common feedstocks: cattle dung and poultry litter. A third potential feedstock is also investigated as a novel and significant new source: waste rice straw used in cattle markets. These three feedstocks were chosen because between them, they cover a large fraction of scenarios in the country where AD could be used. All of the data needed to determine the ene

APA, Harvard, Vancouver, ISO, and other styles

38

Baumann, Lars. "Improved system models for building-integrated hybrid renewable energy systems with advanced storage : a combined experimental and simulation approach." Thesis, De Montfort University, 2015. http://hdl.handle.net/2086/11103.

Full text

Abstract:

The domestic sector will play an important role in the decarbonisation and decentralisation of the energy sector in the future. Installation numbers of building-integrated small-scale energy systems such as photovoltaics (PV), wind turbines and micro-combined heat and power (CHP) have significantly increased. However, the power output of PV and wind turbines is inherently linked to weather conditions; thus, the injected power into the public grid can be highly intermittent. With the increasing share of renewable energy at all voltage levels challenges arise in terms of power stability and qual

APA, Harvard, Vancouver, ISO, and other styles

39

Yu, Fu-Chen. "Reactivation Mechanism Studies on Calcium-Based Sorbents and its Applications for Clean Fossil Energy Conversion Systems." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1298957301.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Johnson, Matthew. "Sustainable design analysis of waterjet cutting through exergy/energy and LCA analysis." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003231.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Lundquist, Philip. "Operation strategies of using energy storage for improving cost efficiency of wind farms. : Examining emergency power supply and support services." Thesis, Uppsala universitet, Elektricitetslära, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447078.

Full text

Abstract:

With the increase in the world energy demand and environmental incentives, renewable energy sources (RES) need to determine their place as some of the primary power sources in future power systems. However, due to uncertain energy production, renewable energy sources cause unbalance in the power system due to the unsynchronized supply and electricity demand. The intermittent power production causes undesired power fluctuation, affecting the power quality and reliability of the power source. Energy storage is one solution that is debated to increase the reliability of renewable energy productio

APA, Harvard, Vancouver, ISO, and other styles

42

Hoeppner, Jeffrey Wayne. "The effects of legume green manures, perennial forages, and cover crops on non-renewable energy use in western Canadian cropping systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62754.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Weigel, Brent Anthony. "Development of a commercial building/site evaluation framework for minimizing energy consumption and greenhouse gas emissions of transportation and building systems." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44735.

Full text

Abstract:

In urbanized areas, building and transportation systems generally comprise the majority of greenhouse gas (GHG) emissions and energy consumption. Realization of global environmental sustainability depends upon efficiency improvements of building and transportation systems in the built environment. The selection of efficient buildings and locations can help to improve the efficient utilization of transportation and building systems. Green building design and rating frameworks provide some guidance and incentive for the development of more efficient building and transportation systems. However,

APA, Harvard, Vancouver, ISO, and other styles

44

von, Hepperger Florian. "Implementation of water electrolysis in Växjö´s combined heat and power plant and the use of excess heat : A techno-economic analysis." Thesis, Linnéuniversitetet, Institutionen för byggd miljö och energiteknik (BET), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-105276.

Full text

Abstract:

Renewable energies are fluctuating and the bigger its share on the Swedish energy market, the more fluctuating are the prices. Therefore, CHP plant operators as VEAB in Växjö, are more and more struggling to be competitive. There is, hence, a need of alternative options for the use of produced electricity, rather than being dependent on such a volatile and unclear market. Hydrogen production through water electrolysis could therefore be an alternative to be decoupled from the electricity business and instead being part of a promising, future hydrogen economy. Since state-of-the-art electrolyse

APA, Harvard, Vancouver, ISO, and other styles

45

Almatouq, Abdullah. "Study of the parameters for optimisation of the design and performance of bio-electrochemical systems for energy/hydrogen generation and resource recovery." Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/100405/.

Full text

Abstract:

This study focused on the exploration, assessment and experimental investigation of bio-electrochemical systems (BES) for concurrent phosphorus (P) recovery and energy generation/hydrogen (H2) production. The main aim was to study and understand the parameters for optimisation of the design and the performance of BESs for concurrent phosphorus recovery and energy generation/hydrogen production. In total, four dual chamber bio-electrochemical systems (Microbial Fuel Cells (MFCs) and Microbial Electrolysis Cells (MECs)) were used to investigate the impacts of key design and operational condition

APA, Harvard, Vancouver, ISO, and other styles

46

Torstensson, Johan, and Jon Gezelius. "Waste-to-Energy in Kutai Kartanegara, Indonesia : A Pre-feasibility study on suitable Waste-to-Energy techniques in the Kutai Kartanegara region." Thesis, Energi och teknik, SLU, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-269607.

Full text

Abstract:

The thesis outlined in this report is a pre-feasibility study of the potential to use waste-to-energy technology in the region Kutai Kartanegara, Borneo, Indonesia. The project is a collaboration between the Kutai Kartanegara government, Uppsala University, the Swedish University of Agricultural sciences and the technology consulttancy Sweco. The current waste management system in Kutai Kartanegara consists of landfills in the cities and open burnings and dumping in the lesser developed sub-districts. This is a growing problem both environmentally and logistically. The electrification in the

APA, Harvard, Vancouver, ISO, and other styles

47

Ekström, Adrian, and Karl Johan Tegnér. "Green National Innovative Capacity : An empirical study of the determinants of patenting in technologies related to renewable energy sources." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264092.

Full text

Abstract:

Climate change constitutes a major threat to our planet. Finding and developing new technologies that can utilize renewable sources of energy is an essential component in combating this threat. The concerns are global, and today there is large variation in innovation intensity across advanced countries. Motivated by these differences, this thesis provides an empirical investigation of the determinants of country-level production of patents related to renewable energy generation. The investigation examines the impact of public environmental policy by assessing the effect of policy stringency an

APA, Harvard, Vancouver, ISO, and other styles

48

Cai, Zhichang. "From energy efficiency to integrated sustainable urbanism in residential development in China." Licentiate thesis, KTH, Industriell ekologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-25233.

Full text

Abstract:

China has adopted Sustainable Development as a national strategy for all industries. In civil construction sector, sustainability is regarded as the development of Green Building in China. Since 2000, China has introduced a series of policies and laws to promote Green Building. Green Building was defined as buildings that are “energy-efficient, land-efficient, water-efficient, and material-efficient” and emit “minimal pollution” in during its entire life cycle, and meets a specified standard for indoor environment at the same time. However, energy efficiency is the central issue of current Gre

APA, Harvard, Vancouver, ISO, and other styles

49

Topriska, Evangelia Vasiliki. "Experimental and computational study of a solar powered hydrogen production system for domestic cooking applications in developing economies." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/12824.

Full text

Abstract:

In many developing economies, a high percentage of domestic energy demand is for cooking based on fossil and biomass fuels. Their use has serious health consequences affecting almost 3 billion people. Cleaner cooking systems have been promoted in these countries such as solar cooking and smokeless stoves with varying degrees of success. In parallel, solar electrolytic hydrogen systems have been developed and increasingly used during the last 25 years for electricity, heat and automobile fueling applications. This study has developed and tested experimentally in the laboratory a solar hydrogen

APA, Harvard, Vancouver, ISO, and other styles

50

Reissner, Alexander [Verfasser], Martin [Akademischer Betreuer] Tajmar, and Andreas [Gutachter] Werner. "Metal Hydrides as Enabling Technology for the use of Hydrogen-Based Energy Storage Systems on Telecommunication Satellites / Alexander Reissner ; Gutachter: Andreas Werner ; Betreuer: Martin Tajmar." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://d-nb.info/1140735268/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!