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Krarti, Moncef. "Evaluation of Energy Efficiency Potential for the Building Sector in the Arab Region." Energies 12, no. 22 (2019): 4279. http://dx.doi.org/10.3390/en12224279.
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The paper overviews the current energy demand trends in the building sector for the Arab region using reported historical energy consumption. Moreover, the paper describes the current energy efficiency policies and regulations for all the Arab countries specific to both residential and commercial buildings. Finally, the paper evaluates potential benefits for large-scale energy efficiency programs specific to new and existing building stocks within the Arab region using a bottom-up analysis approach. The analysis of the available energy consumption for all the Arab countries has shown that the Arab region presents a significant variation in energy consumption levels between its sub-regions and countries. Indeed, the Arab region includes oil-producing countries such as Saudi Arabia with the largest energy use per capita in the World with over 9000 kWh/person of electricity used annually in buildings. However, the same region has the least developed countries such as Sudan and Yemen with the lowest energy use per capita in the World with barely 100 kWh/person/year of electrical consumption. The review of the existing regulations has indicated that several Arab countries have not implemented any energy efficiency codes and standards for building envelope, lighting, heating and cooling equipment, and appliances. A cost-effectiveness analysis has indicated that the Arab region can incur significant benefits in upgrading the energy efficiency of its new and existing buildings especially its households. Specifically, the adoption and the enforcement of stringent energy efficiency codes for new residential and commercial buildings can result in a reduction of 12.7 TWh/year in final annual energy consumption for the Arab region. Moreover, retrofit programs targeting existing buildings can save up to 470 TWh or a third of the building sector final energy consumption per year after 2030. Combining comprehensive energy efficiency requirements for new buildings and extensive retrofit programs for existing buildings would reduce the total final energy consumption of the building sector in the Arab region by 600 TWh by 2030 and by 900 TWh by 2050 if all the energy programs start to be implemented by 2020.
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Salih, Kawar T. "Finding Alternative Methods for Controlling the Power Shortage in Kurdistan through Improving Buildings’ Energy Performance." Academic Journal of Nawroz University 7, no. 4 (2018): 124. http://dx.doi.org/10.25007/ajnu.v7n4a281.
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The power shortage is one of the major problems in developing countries. Kurdistan Region of Iraq suffers from this issue, like other developing countries. Especially, after the economy crises that has started in 2014. However, all its efforts for tackling this challenge has been in providing more energy supply stations and more fuel provision. Few studies have been found in the region that seek the relation between the quality of buildings and energy consumption. It is questioned if the building sector in Kurdistan is well managed and environmentally sufficient to consume minimum amount of energy since it is the largest energy consuming sector. This research will seek an alternative to decrease the energy demand in buildings instead of expanding the energy sector. This could be achieved by evaluating the quality of building sector environmentally and improving it. Providing guidelines for building’s thermal regulations, passive building design and increasing the energy efficiency of buildings by renewal means could be alternative strategies for lowering the energy consumption. Theoretical and numerical research approach have been taken in to account for finding the answer through a case study and comparative analysis. A variation of 21-29% of power consumption can be observed between buildings that have not considered energy efficiency criteria in their design and those who reflected them more in the design.
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Ürge-Vorsatz, Diana, Radhika Khosla, Rob Bernhardt, et al. "Advances Toward a Net-Zero Global Building Sector." Annual Review of Environment and Resources 45, no. 1 (2020): 227–69. http://dx.doi.org/10.1146/annurev-environ-012420-045843.
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The building sector is responsible for 39% of process-related greenhouse gas emissions globally, making net- or nearly-zero energy buildings pivotal for reaching climate neutrality. This article reviews recent advances in key options and strategies for converting the building sector to be climate neutral. The evidence from the literature shows it is possible to achieve net- or nearly-zero energy building outcomes across the world in most building types and climates with systems, technologies, and skills that already exist, and at costs that are in the range of conventional buildings. Maximizing energy efficiency for all building energy uses is found as central to net-zero targets. Jurisdictions all over the world, including Brussels, New York, Vancouver, and Tyrol, have innovated visionary policies to catalyze themarket success of such buildings, with more than 7 million square meters of nearly-zero energy buildings erected in China alone in the past few years. Since embodied carbon in building materials can consume up to a half of the remaining 1.5°C carbon budget, this article reviews recent advances to minimize embodied energy and store carbon in building materials.
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McNeil, Michael A., Wei Feng, Stephane de la Rue du Can, Nina Zheng Khanna, Jing Ke, and Nan Zhou. "Energy efficiency outlook in China’s urban buildings sector through 2030." Energy Policy 97 (October 2016): 532–39. http://dx.doi.org/10.1016/j.enpol.2016.07.033.
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Drosos, Dimitrios, Grigorios L. Kyriakopoulos, Stamatios Ntanos, and Androniki Parissi. "School Managers Perceptions towards Energy Efficiency and Renewable Energy Sources." International Journal of Renewable Energy Development 10, no. 3 (2021): 573–84. http://dx.doi.org/10.14710/ijred.2021.36704.
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Global economic growth is accompanied by increased energy demand, thus conventional fuels such as coal, oil and gas, which are the primary energy sources, are gradually being depleted. At the same time, the combustion of conventional fuel for energy production causes serious adverse effects on the environment and contributes to climate change due to the emitted greenhouse gases. For the above reasons, most of the developed and developing countries especially during the last decades, have introduced various incentives for the greater penetration of renewable energy sources (RES) in all sectors of the economy. Concerning the building sector, several measures have been adopted, including the promotion of energy efficiency and energy saving. A significant proportion of the building stock are the school buildings where students and teachers spend a significant proportion of their daily time. Teachers' attitudes and views, especially the school unit managers concerning the use of RES in schools, are important in the effort to rationalize and control energy use. This study was conducted through a structured questionnaire applied to a sample of 510 school managers in Greece's primary and secondary education. The school unit managerial role for the case of Greek schools is performed by the school principal who has both administrative and educational duties. Statistical analysis included the application of Friedman's test and hypothesis test on questions concerning school manager environmental perceptions and energy-saving habits. According to the results, Greek school managers have a high degree of environmental sensitivity, since 97.6 % agreed or strongly agreed that the main concern should focus on energy saving. Furthermore, 71% of the respondent reported to have good knowledge on solar energy, followed by 64% on wind energy while only 34% are knowledgeable on biomass. Almost all the respondents (99%) agreed that it is important to provide more RES-orientated education through the taught curricula. Concerning energy saving behaviour, around 90% reported that they switch off the lights when leaving the classroom and they close the windows when the air-condition is operating. Hypothesis tests revealed a relationship between the school managers' ecological beliefs, the energy saving habits in the school environment, and the recognition of the importance of environmental education. Conclusions highlighted the need to intensify environmental education programs in the school environment concerning RES in schools. This will lead to a higher level of environmental awareness of both teachers and students and therefore to a more dynamic behaviour towards the effort to “greenify” the school environment.
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Rosa, Marlison Noronha, Yan Machado Sousa, Karla Emmanuela Ribeiro Hora, Katia Kopp, and Getulio Antero de Deus Junior. "Environmental Education and Energy Efficiency as Strategies for Reducing Energy Consumption in Public School Building in Goiânia." International Journal on Alive Engineering Education 6 (April 2, 2019): 13–32. http://dx.doi.org/10.5216/ijaeedu.v6.54740.
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Electrical energy is essential for the quality of life of people, who use it in different socioeconomic activities and for technological development. In view of the gradual increase in the demand for electricity and the future possibility of not serving all the consumer sectors, it is necessary to optimize it. The objective of this study was the application of strategies based on the pillars of energy efficiency and environmental education in order to minimize the expenditure of electric energy in public buildings, which were selected for this project due to the fact that, its users show a lack of concern about the correct consumption of electric energy since the expenses are tied to the public coffers and are not always perceived by the people as resources coming from the taxes paid by the citizens. Among the public buildings that consume the most electric energy, the most important are those in the education sector. In fact, a larger project called the Energy Efficiency Project in Public Buildings in Goiânia (PEEEPG), to which this work is linked, found that among the municipal public buildings, the education sector is responsible for approximately 30% of the electricity consumption and, therefore, this specific sector was selected for the application of the selected strategies. The methodology used was based on research-participant, environmental education together with replacement of lamps by LED system (Light Emitting Diode) at strategic locations in the building and monitoring of results. The actions carried out included the lamp replacement, and educational lectures offered to students of different age groups in three school shifts with a partnership of employees and teachers of the municipal school selected on energy efficiency and strategies to reduce the consumption of electricity. The project mobilized directly about 200 people belonging to the target audience and indirectly 800 students who were part of the teaching unit. It was collected a data base among 2012 to 2016. The methods of data collection and analysis were based on documentary research, analyzing the electric energy bills of the building, as well as documents and legislation of the municipality itself on the consumption of electric power and the architecture model applied to school environments in Goiânia. The results obtained, after a monitoring period of six months (November to April) during the years 2016 and 2017, indicated an analyze to reduction of 16% of the consumption of electric energy in the building, compared to the same period in the previous year. Therefore, this result regard to the possibility of investments in energy efficiency projects for public buildings, subsidizing actions in the design, retrofit and maintenance of public buildings.
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Tuladhar, Prerana. "Gender and Energy for Space Heating and Cooling." Journal of the Institute of Engineering 15, no. 3 (2020): 368–74. http://dx.doi.org/10.3126/jie.v15i3.32224.
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Energy is one of the crucial aspects now-a-days to be considered from the household chores to the educational, transportation, industrial and many other sectors. Apart from cooking, space heating and cooling also have greater impact as buildings consume about 40% of world’s energy use and major part of energy is used for space heating and cooling [1]. Gender is another aspect that should be taken in to consideration in the energy sector. Discrimination between men and women, either it may be in the knowledge regarding energy sector, profession, application and practices etc. is seen in our society. Therefore, this paper seeks to investigate the impacts of space heating and cooling in the energy consumption pattern of Residential buildings. This paper explores how the gender issues in the energy sector can be addressed and how can it lead towards the sustainable development of the society and then nation. At the same time, paper highlights the changes and improvements in the energy consumption pattern with the enrollment of women in the energy sector. The conclusions are derived from the several literature studies and explorative data analysis with the concern of gender relation with the energy efficiency in the space heating and cooling of residential buildings.
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Silvero, Fabiana, Fernanda Rodrigues, and Sergio Montelpare. "Energy Efficiency Policies to Face Buildings’ Climate Change Effects in Paraguay." Applied Sciences 10, no. 11 (2020): 3979. http://dx.doi.org/10.3390/app10113979.
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Nowadays, the importance of implementing energy efficiency (EE) measures is growing significantly worldwide, based on its potential to reduce energy demands and mitigate climate change effects. Paraguay is a developing country with the highest per capita hydroelectric energy generation in the world, but only 18% of local consumption is hydroelectric and 41% of its energy matrix corresponds to oil products. This paper aims to analyse the importance the Country places on EE as a strategy towards sustainable development and to highlight as EE is an effective pathway to mitigate the climate changes and contrast their effects. The authors initially provide an insight into the climate scenarios for Paraguay and underline the effects of the climate changes on the buildings’ comfort. Subsequently, the authors provide, by resourcing a bibliographic review, a description of the Paraguayan sectors of greater energy consumption, its policies and targets set for increasing EE. Besides, the main EE projects developed by other neighbouring South American countries are analysed to show the level of development of each one in the scope of EE and to offer a reference basis of potential virtuous solutions to be adopted in Paraguay. A focus on the building sector is also made to provide a foundation for policy analyses to enhance EE in this sector. As a result of this review, evidence that EE is beginning to take part in Paraguay’s public policies was found, with the leaders becoming aware of its importance. Nevertheless, many concrete results could not be achieved as of yet and overcoming these barriers still involve a great challenge. Regarding the building sector, few advances have been noticed regarding the regulations of buildings’ thermal performance, a reason for which the National objectives set need to be more specific to achieve greater collective awareness to enforce them. Finally, key actions are recommended for Paraguay aiming to improve EE levels to face the climate change phenomenon.
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Merini, Ikram, Angel Molina-García, M. Socorro García-Cascales, Mustapha Mahdaoui, and Mohamed Ahachad. "Analysis and Comparison of Energy Efficiency Code Requirements for Buildings: A Morocco–Spain Case Study." Energies 13, no. 22 (2020): 5979. http://dx.doi.org/10.3390/en13225979.
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The trend in energy consumption, with a particular focus on heating and cooling demand, is an issue that is relevant to the promotion of new energy policies and more efficient energy systems. Moreover, heating and cooling energy demand is expected to rise in the next several decades, mainly due to climate change as well as increasing incomes in developing countries. In this context, the building sector is currently a relevant energy-intensive economic sector in Morocco; it accounts for 33% of the country’s total energy demand (as the sector with the second highest energy demand, after the transport sector), with the residential sector accounting for 25% and the tertiary sector accounting for 8%. Aiming to reduce energy dependence and promote sustainable development, the Moroccan government recently issued a comprehensive plan to increase the share of renewables and improve energy efficiency. This strategy includes novel thermal building regulations promoted by the Moroccan Agency for Energy Efficiency. This paper analyzes the thermal behavior and heating-cooling energy demand of a residential building located in Tangier (Morocco) as a case example, based on the country’s new thermal regulations and considering specific climatological conditions. A comparison with common Moroccan residential buildings as well as with those in nearby countries with similar meteorological conditions but significant differences in terms of energy demand regulation and requirements, such as Spain, is also included. Simulations were carried out using the DesingBuilder and EnergyPlus Software packages. According to the results, the last building thermal regulation requirements in Morocco need to be revised and extended in order to achieve the energy efficiency objectives established by the Moroccan government for 2030.
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Economidou, Marina, Paolo Zangheri, Andreas Müller, and Lukas Kranzl. "Financing the Renovation of the Cypriot Building Stock: An Assessment of the Energy Saving Potential of Different Policy Scenarios Based on the Invert/EE-Lab Model." Energies 11, no. 11 (2018): 3071. http://dx.doi.org/10.3390/en11113071.
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Despite various government policies promoting energy efficiency in buildings over the last 15 years, Cyprus is still associated with a large untapped energy efficiency potential in this sector. The impact of different policy scenarios on future energy needs of the building sector in Cyprus is explored by first reviewing the current status of the building stock in Cyprus and existing national landscape of energy efficiency policies. Various new policies are then proposed to complement the existing framework and help exploit further the potential. Using the Invert/EE-Lab model, three policy scenarios extending to 2050 are assessed with the aim to estimate the energy efficiency potential of the Cypriot building sector and identify policy solutions to harness this potential. The energy consumed for heating, cooling, hot water, and lighting in the entire Cypriot building stock is expected to drop by up to 16% in 2050 compared to the baseline scenario. Under the most ambitious scenario, nearly 60% of the building stock in 2050 will be energy efficient, consuming less than half of the energy used by the average building stock in 2012. Taking into account the modelling results, recommendations on how to improve the financial landscape in buildings until 2050 are presented.
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Upitis, M., I. Amolina, I. Geipele, and N. Zeltins. "Measures to Achieve the Energy Efficiency Improvement Targets in the Multi-Apartment Residential Sector." Latvian Journal of Physics and Technical Sciences 57, no. 6 (2020): 40–52. http://dx.doi.org/10.2478/lpts-2020-0032.
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AbstractDirective (EU) 2018/2002 of the European Parliament and of the Council amending Directive 2012/27/EU on energy efficiency sets a target of 32.5 % energy efficiency to be achieved by 2030, with a possible upward revision in 2023. The directive also stipulates that the obligation to achieve annual energy savings must continue to be met after 2020. In addition, a revised directive on the energy performance of buildings was adopted in May 2018. It includes measures to speed up the renovation of buildings and the transition to more energy-efficient systems, as well as to improve the energy efficiency of new buildings, thus using smart energy management systems [1].Buildings consume the most energy and have the greatest energy saving potential. They are therefore crucial to achieving the European Union’s energy saving targets. The EU allocated around 14 billion EUR to improve the energy efficiency of buildings in the period of 2014–2020, of which 4.6 billion EUR was intended for residential buildings. In addition, the Member States have earmarked 5.4 billion EUR of public co-financing for the improvement of all types of buildings, of which around 2 billion EUR is allocated to residential buildings.Multi-apartment residential buildings in Latvia are in a technically unsatisfactory condition. In Latvia, the service life of multi-apartment residential buildings has been artificially extended. In addition, there is also the problem of reduced construction quality. Housing problems affect all layers of society, but they are most acute for low- and middle-income people.The aim of the research is to study, using the co-financing of the European Union Structural Funds, the activities performed during the renovation process of multi-apartment residential buildings in Latvia and to identify the shortcomings.
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Zhang, Mingshun, Mujie Wang, Wei Jin, and Chun Xia-Bauer. "Managing energy efficiency of buildings in China: A survey of energy performance contracting (EPC) in building sector." Energy Policy 114 (March 2018): 13–21. http://dx.doi.org/10.1016/j.enpol.2017.11.065.
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Felix Benitez, Joan Manuel, Luis Alfonso del Portillo-Valdés, Victor José del Campo Díaz, and Koldobika Martin Escudero. "Simulation and Thermo-Energy Analysis of Building Types in the Dominican Republic to Evaluate and Introduce Energy Efficiency in the Envelope." Energies 13, no. 14 (2020): 3731. http://dx.doi.org/10.3390/en13143731.
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The improvement of the energy performance in buildings is key for sustainable development, even more so in the case of the Dominican Republic (DR), which is committed to this goal but which has neither regulation nor specific social behavior in this field. The main goal of this work is double; on one hand it is aimed at providing useable information for those who have the responsibly of making regulation norms and on the other, it is desirable to give an essential, technically proven and handy tool to those involved in the construction sector in improving the envelopes of buildings and to introduce good practices into the management of the energy systems of buildings. A case study of eight administrative buildings located in different climatic zones of the DR was carried out. A simulation tool was used for the study, and one of the buildings was monitored to verify the simulation work. Those factors that affect the development of the buildings in relation to thermo-energy consumption have been detailed. The large-scale heat gains resulting from the common glazing used by the tertiary sector in the Dominican Republic (including office buildings, hospitals and shops among others) illustrate the need for economically viable solutions in this sector. As a conclusion, it has been proved that the incidental thermal load of buildings could be reduced by up to 40%, thus in turn reducing the costs associated with the electricity needed to maintain the users’ desired thermal comfort level, as their influence in this sector is significant.
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Seeley, Christopher Charles, and Shobhakar Dhakal. "Energy Efficiency Retrofits in Commercial Buildings: An Environmental, Financial, and Technical Analysis of Case Studies in Thailand." Energies 14, no. 9 (2021): 2571. http://dx.doi.org/10.3390/en14092571.
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In the rapidly growing economies of Southeast Asia, energy consumption and energy costs in buildings continue to increase. Over the past decade, energy consumption from the commercial building sector in Thailand has increased at an average of 4% per annum and currently represents over 30% of total electricity consumption, second only to the industrial sector. Buildings that exist today will continue to represent most of both energy and greenhouse gas (GHG) emissions from the built environment, with newly constructed buildings representing only a small additional portion. This paper analyzes the environmental, technical, and financial characteristics of energy efficiency retrofit activities in commercial buildings in Thailand through detailed case studies of forty-two projects undertaken over the past 8 years. Our findings suggest that retrofits provide significant opportunities to reduce energy use, energy costs, and GHG emissions while also validating the economic feasibility of investments into such retrofit activities. Through this detailed analysis of past retrofit projects in Thailand, we found that the marginal abatement costs (MAC) relating to the key energy conservation measures (ECM) implemented within these retrofit projects all have negative costs. However, although these findings demonstrate positive economics and should be sufficient to instigate widespread adoption, in reality, this is not taking place. It is evident that greater public policy and leadership are needed to stimulate growth in the building retrofit sector to take advantage of the opportunities and benefits that building retrofits offer.
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Grande-Acosta, Genice K., and Jorge M. Islas-Samperio. "Boosting Energy Efficiency and Solar Energy inside the Residential, Commercial, and Public Services Sectors in Mexico." Energies 13, no. 21 (2020): 5601. http://dx.doi.org/10.3390/en13215601.
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The residential, commercial, and public sectors consume between 20% and 30% of final energy demand worldwide. Due to the intensive use of fossil fuels and conventional electricity, they also have an important participation in the emission of greenhouse gases (GHG). Taking Mexico as a case study, this article develops an alternative scenario that considers that in these sectors, buildings can generate energy for self-consumption or to supply it to the power network—for which four solar energy options are analyzed. In addition, to manage and rationalize the energy demand of these buildings, eight energy efficiency measures are studied. These options were selected on the basis that they are technically and economically feasible to implement in buildings in Mexico. The results reveal that by 2030, in relation to the GHG trend scenario, this mitigation scenario reduces 23.5 million tons of carbon dioxide equivalent (MtCO2e) in the residential (19 MtCO2e), commercial (2.6 MtCO2e), and public services sectors (1.9 MtCO2e), while by 2035 it reaches 45 MtCO2e; which far exceed the avoided emissions goals established in Mexico’s nationally determined contributions (NDC) for 2030 (5 MtCO2e) for the residential and commercial sectors. Therefore, it is possible to increase the ambition for mitigation in these sectors, as well as including the public sector, in a renewed Mexico’s NDC. This mitigation scenario generates a total economic benefit of $7.7 billion, which means that it does not generate an overall incremental cost, but requires an incremental investment of over $9 billion USD, which is a financing challenge to achieve this scenario.
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Harmathy, Norbert. "Investigation of decarbonization potential in green building design to accelerate the utilization of renewable energy sources." Thermal Science, no. 00 (2020): 195. http://dx.doi.org/10.2298/tsci200324195h.
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The construction sector as one of the highest carbon emitters in the World has an international initiative for Green House Gas reduction. Green building certifications demonstrate performance, efficiency and economy in the constuction sector. The motivation of the research was to investigate whether Green certified buildings which fulfill the minimum energy standards do demonstrate high energy performance compared to energy efficient buildings and renewable systems. The hypothesis was to investigate that renewable energy source application could contribute to higher performance, against a typical efficient HVAC system (usually applied in commercial buildings) and a building aiming for Green certification, concerning mandatory energy efficiency requirement. The research scope was to investigate and evaluate various HVAC solutions using triple-criteria evaluation method for decarbonization: energy performance, carbon footprint and operation cost to formulate systematic solutions in the design phase of projects for wide audience with preferable and applicable results.
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Alkhalidi, Ammar, and Osama Aljolani. "Do green buildings provide benefits to the residential sector in Jordan? Yes, but…" International Journal of Low-Carbon Technologies 15, no. 3 (2020): 319–27. http://dx.doi.org/10.1093/ijlct/ctz080.
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Abstract The concept of green buildings has recently arisen in order to contribute to solving some environmental, energy and economic issues. To meet the green building requirements, this paper describes an integrated design approach to improve the energy and water efficiency of the mid-rise residential buildings in Jordan using the eQUEST energy simulation tool. The results show that savings of 77.9% in the annual requirements of electricity, 65.0% in the requirements of diesel oil and 19.5% in the indoor water consumption can be achieved. Finally, the Jordanian green building model had achieved 44 points in the Leadership in Energy and Environmental Design green building rating system and will have the ‘Certified’ classification.
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Riekstiņš, Roberts. "BUILDING ENERGY AND ARCHITECTURAL FORM RELATIONSHIPS / PASTATO ENERGIJOS IR ARCHITEKTŪRINĖS FORMOS RYŠIAI." Mokslas - Lietuvos ateitis 3, no. 3 (2011): 67–71. http://dx.doi.org/10.3846/mla.2011.053.
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Energy efficiency of buildings, of course, is now a major issue in the construction industry. It is being widely examined both among construction professionals and amateurs. There is no doubt that energy efficiency as a key factor in ensuring environmental sustainability will become the main driving force of the construction in the future. Buildings have to become more energy-efficient. This opinion is supported by the existing energy-use balance in Europe, indicating that the housing sector spends almost half of total energy consumption and building sector forms more than a third of total CO2 emissions (Bradley 2010). While discussing the subject of building energy efficiency, mostly different technical characteristics of buildings and engineering solutions are talked over. However, it has been relatively little examined how energy-efficient design affects the building’s architecturally-aesthetic side, styles of expression and trends in the architect’s profession. We learn that the essence for an energy-efficient building lies in smart modesty (Bokalders, Block 2010) and the rational utilization of materials (aim high – go low). And still – can energy efficient building be expressive, extravagant, and perhaps – even ambitious? There are many ideas implemented in projects which show that energy efficiency is not an obstacle to large scale architectural ideas. However, in order to combine architectural and artistic ambitions with the principles of sustainability, architects should search for an entirely new approach to architectural expression based on a detailed assessment of solutions applied from environmental point of view. It requires a complex understanding of building shape, applied technologies, energetic benefits and cost parameters. This article identifies the realised and experimental projects of the world and presents an analysis of classification of buildings according to typology. This publication gives general impression of the amplitude and topicality of the study issue, as well as the diversity applied to the architectural techniques. The article concludes that even creating a building’s shape in a smart way makes it possible to use substantial part of the renewable energy offered by nature.
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Scorza, Francesco. "Towards Self Energy-Management and Sustainable Citizens' Engagement in Local Energy Efficiency Agenda." International Journal of Agricultural and Environmental Information Systems 7, no. 1 (2016): 44–53. http://dx.doi.org/10.4018/ijaeis.2016010103.
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EU 2020 targets and global challenges concerning energy efficiency in public and private sectors generated a great number of local and sectorial approaches mainly oriented to investment promotion in energy technologies including buildings renovations. RES diffusion also generated impacts on rural and natural areas, but a comprehensive balance of recent trends still remarks only a partial success. The research hypothesis regards short-term benefits that an inclusive approach in energy management could bring in connection with energy efficiency investments at municipal scale. In fact a lot of energy wastage is linked to ineffective usage model, even in renewed buildings too. If one includes community involvement process oriented to deliver sustainable energy behaviors, one can expect a general improvement of energy saving in public and private sector. In order to be included, citizens need information: the Real time ICT application for energy monitoring represents an advancement proposed in this research. The long term perspective fits with the attitude of informed citizen to deliver self-energy management practice in everyday life. The benefits of the proposed approach regard territorial policies in the framework of EU-2020 strategy, Covenant of Mayors and UN 2030-Agenda.
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GRIGORYEVA, N. "ESTIMATION OF ECONOMIC EFFICIENCY CONCEPT OF ENERGY EFFICIENCY MEASURES FOR RESIDENTIAL BUILDINGS." Экономическая наука сегодня, no. 6 (December 21, 2017): 199–208. http://dx.doi.org/10.21122/2309-6667-2017-6-199-208.
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The residential sector is a significant reserve for improving the energy efficiency of the Belarussian economy. Increasing the energy efficiency of residential buildings approaches are explored through a comprehensive concept for assessing the economic efficiency of energy efficiency measures. Four types of evaluation of the effectiveness of measures to improve the energy efficiency of residential buildings are defined: the economic cost estimation, the evaluation of economic results, the evaluation of social results, the evaluation of environmental results. Depending on the objectives and constraints set by stakeholders, inherent in each project, four models are identified for the formation of a project to improve the energy efficiency of residential buildings.
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Bashmakov, I. "Policy measures to improve energy efficiency in russian buildings: Forecast up to 2050." Voprosy Ekonomiki, no. 3 (March 20, 2016): 75–98. http://dx.doi.org/10.32609/0042-8736-2016-3-75-98.
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The article presents a long-term forecast of costs and benefits associated with the implementation of additional energy efficiency policies in Russian buildings. In Russia, buildings are directly and indirectly responsible for 38% of primary energy use; at the same time, they have a large energy efficiency potential. The 10 assessed scenarios of implementing packages of policy measures to improve energy efficiency illustrate that it is possible to halve fossil fuel use while providing energy services to the buildings stock which is expected to double by 2050. Additional benefits are considered, such as reduced greenhouse gas emissions and air pollution and improved indoor comfort, employment growth, improved affordability of housing services for both residents and the public sector. The paper estimates the costs and economic benefits of the implementation of energy efficiency measures and policies in the buildings sector. It shows that a new model of economic growth in Russia should be based on improving the overall economic efficiency, including energy efficiency.
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Jovanovic-Popovic, Milica, Ljiljana Djukanovic, and Milos Nedic. "Energy refurbishment of public buildings under cultural heritage protection in Serbia: Constraints and potentials." Thermal Science 22, Suppl. 4 (2018): 1285–96. http://dx.doi.org/10.2298/tsci170601226j.
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By harmonizing national legislation to European codes concerning energy efficiency in building sector, Serbia took commitment to improve energy efficiency of national government buildings. Following the Directive 2012/27/EU principles, refurbishment of this part of building stock is recognized as a leading example in long-therm process of applying energy efficiency regulations at national level. Initial steps in implementation of adopted energy efficiency principles were made in Serbia during 2015, when first energy certificates for three most valuable buildings of national authorities (Government building, The National Assembly, and the Palace of Serbia) were issued. This paper will present results obtained during energy-assessment and energy-certification process of this particular buildings, showing at the same time their specificity, that pretty much traces possible category and range of proposed energy refurbishment scenarios.
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Blumberga, Andra, Dagnija Blumberga, Gatis Žogla, Claudio Rochas, Marika Rošā, and Aiga Barisa. "Diffusion Dynamics of Energy Service Companies in the Residential Sector." International Journal of Energy 15 (March 23, 2021): 8–15. http://dx.doi.org/10.46300/91010.2021.15.2.
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Energy service contracting (EPC) is one of the private sector instruments to improve end use energy efficiency. The dominant part of EPC projects is implemented in the industrial, governmental and municipal sectors while the residential sector has been less attractive to energy service companies (ESCO). This paper describes the first EPC project implemented in a multi apartment building in Latvia. A combination of this project experience, the system dynamics modelling, and microeconomics theory has been used to develop the system dynamics model to capture the interactions and feedback from the ESCO market for residential building energy efficiency. Three policy tools were tested for use in improving the performance of the system. The purpose of the tests was to facilitate the diffusion (or distribution) of EPC in the residential sector.
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Ofori-Boadu, Andrea N., Musibau A. Shofoluwe, De-Graft Owusu-Manu, Gary D. Holt, and David Edwards. "Analysis of US commercial buildings’ energy efficiency programs." Built Environment Project and Asset Management 5, no. 4 (2015): 349–62. http://dx.doi.org/10.1108/bepam-03-2014-0015.
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Purpose – The purpose of this paper is to investigate relationships between five energy efficiency programs and electricity intensities in the US commercial buildings sector. Design/methodology/approach – Regression methods analyze state-level secondary data from 2006 through 2009 to identify significant energy program drivers of electricity efficiency. Findings – Combined, the five programs studied account for approximately nine percent reduction in commercial electricity intensity. Practical implications – Outcomes will inform stakeholders’ decision-making regarding adoption or continuation of energy programs. Social implications – Electricity efficiency gains will help reduce negative environmental aspects and the present dependence on foreign oil. Originality/value – Very little research has considered the impact of multiple programs on commercial electricity efficiency within their complex implementation environment.
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Petrovic, Jovan, Milovan Medojevic, and Igor Mujan. "Energy indicators for public buildings in autonomous province of Vojvodina with focus on healthcare, educational and administrative buildings." Thermal Science 20, suppl. 2 (2016): 331–42. http://dx.doi.org/10.2298/tsci151005020p.
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This paper aims to show the current state of energy consumption and accompanying energy indicators in the public building sector in The Autonomous Province of Vojvodina, Serbia. The public building energy consumption data (healthcare, administration and schools) was collected by surveys supported by on-site measurements, calculations and interviews with people responsible for energy monitoring. Statistical processing of the collected data on the real extent and manner of energy usage in public buildings in Vojvodina was used. This paper presents energy indicators which are on average three times higher than allowed by Serbian Ordinance and what is currently present in neighboring European Countries. It is of the utmost importance to use this data and its implications as a catalyst for the implementation of energy management in the public building sector and an increase in energy efficiency.
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Manzuma, Buhari Mohammed, Usman Abdulfatah Adekunle, and Andrew Mhya Stanley. "ASSESSMENT OF ENERGY EFFICIENCY OF CUSTOMER CARE BUILDINGS OF TELECOMMUNICATIONS COMPANIES IN SELECTED TOWNS IN NIGERIA." Built Environment Journal 17, no. 1 (2020): 1. http://dx.doi.org/10.24191/bej.v17i1.4977.
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The importance of energy to human development cannot be overemphasized as it is a key determinant of economic development of all nations. However, the supply of energy has hardly ever been sufficient to meet up with the ever increasing demands exerted by multiplying population and industrialization. Buildings are accountable for nearly 40% of the total global annual energy consumption most of which is used for lighting and air conditioning. With the building sector having a relatively high potential for energy efficiency improvements compared to other sectors, this research therefore assessed the energy efficiency of the customer care buildings of telecommunication companies in selected towns in north-west Nigeria. This was done by finding out where and how energy is being used in the buildings by estimating the energy consumption of the buildings through assessment of the energy bills and a preliminary energy audit and benchmarking with set standard. Descriptive statistical analyses was done and it was found that 85.71% of the buildings have their HVAC systems consuming over 50% of their total energy with an average consumption of 74.58% per year. Also 57.14% of the buildings have higher energy use and energy use intensities than the benchmarks. It was concluded that the major energy consuming systems are the HVAC and lighting. It is therefore recommended that grid electricity which is the main source of energy to the buildings should be stabilized; while greater advantage should be taken of passive ventilation and cooling rather than mechanical HVAC systems.
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Basok, B. I., and E. T. Baseyev. "TECHNOLOGICAL AND SOCIO-ECONOMIC INNOVATIONS FOR IMPROVING ENERGY EFFICIENCY OF BUILDINGS (Review)." Industrial Heat Engineering 40, no. 3 (2018): 46–56. http://dx.doi.org/10.31472/ihe.3.2018.07.
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The communal heat power engineering of Ukraine and its main area - the heat supply of the settlements of Ukraine - is the main consumer of primary energy resources (more than 60% of the total energy balance of the country, mainly imported natural gas). At the same time, this sector has the greatest potential for energy saving if measures and mechanisms are used to increase the efficiency of energy use, first of all with energy supply in buildings (thermal losses here reach up to 40%). Low energy efficiency of heat supply is the main reason for high tariffs for the consumer of housing and communal services and the challenge of social tension. Increasing energy efficiency is a basic condition for national economic, environmental and social stability, a requirement for the safety of life and a guarantee of the entire national security of the country. An overview of technological, organizational and socio-economic innovations for increasing energy efficiency of buildings is presented. Innovative equipment and technologies for increasing the energy efficiency of buildings and innovative engineering systems for their energy supply have been carried out at ITTP NAS of Ukraine. The method of determination of energy efficiency indicators of buildings, enclosing structures of buildings and the practice of conducting energy audits with the use of such diagnostic center measures as demonstration building of the "zero energy" constructed on the territory of ITT of NAS of Ukraine with energy supply from renewable energy sources (heat of soil, insolation, wind). Such a demonstration facility serves as a scientific and methodological center for training students of heat energy specialties, as well as the training of specialists involved in the development of energy efficient energy supply technologies for buildings and their energy audit. On the problems of increasing energy efficiency of the building sector in the near future, the main objectives of scientific research, subjects of fundamental, applied research, subjects, methods and tools of such research were determined.
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Hong, S., A. Mylona, H. Davies, P. Ruyssevelt, and D. Mumovic. "Assessing the trends of energy use of public non-domestic buildings in England and Wales." Building Services Engineering Research and Technology 40, no. 2 (2018): 176–97. http://dx.doi.org/10.1177/0143624418806135.
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Accessing sufficient data for understanding how energy is used in non-domestic buildings is deemed to be a challenge in many countries. In the UK, such a challenge has led to limited understanding of long-term changes in energy use of buildings. This study aims to develop a deeper understanding of the trends in energy use across the public sector non-domestic buildings in England. Display energy certificate (DEC) data which relate to 59,740 public sector non-domestic buildings in England and Wales were analysed. Statistical analyses were carried out to understand both the latest patterns of energy use and how they have changed between 2010 and 2016. The patterns of energy use of various public-sector buildings were found to have gradually changed over the seven-year period. An imminent release of a revised dataset was deemed necessary for understanding the performance of buildings to support the aspirations set out in the clean growth strategy. The study pointed to a need for regularly gathering and sharing data for understanding the changes in the patterns of energy use of the stock. Developing a framework that can facilitate this would enable various stakeholders make informed decisions for improving energy efficiency of the UK’s non-domestic buildings. Practical application: Statistics on electrical and fossil-thermal energy use intensity provide up-to-date reference points for assessing operational energy efficiency of public sector buildings. Principles for developing a framework are provided to support various stakeholders make informed decisions on for example setting design targets or making capital investments.
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ElGohary, Amr Soliman, and Shereen Omar Khashaba. "The Challenge of Greening the Existing Residential Buildings in the Egyptian Market Base Case." Academic Research Community publication 2, no. 3 (2018): 136. http://dx.doi.org/10.21625/archive.v2i3.355.
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Existing buildings are the massive percentage of the building stock, and therefore, are the key to improving efficiency; buildings account for an enormous share of the climate change crisis, and approximately 40% of the world total energy consumption (McArthur & Jofeh, 2015).
 The Egyptian stock of buildings includes about 12 million buildings. 60% of these buildings are residential. The final electricity consumption of the residential buildings in 2010 was 51370 GWh and increased in 2014 to reach 62441 GWh. Thus the share of total energy consumption was 18.8% in 2010 and increased to reach 21.55% in 2014 ("Technology Roadmap - Energy efficient building envelopes.", 2013). Therefore, the residential sector plays an important role in the mitigation of energy consumption crisis, which is expected to increase.
 The research field and initiatives in Egypt on the green buildings and green buildings retrofits are rare and, if existing, are weakly applied. Unlike in developed countries, there is a large research on building retrofits, e.g., the Residential Property Assessed Clean Energy (R-PACE) program and the weatherization assistance program (WAP) of the department of energy (DOE). Both are examples of the incentives to green building initiatives globally.
 This paper discusses the challenge of greening the existing residential buildings in Egypt by demonstrating an analysis of the motives and the barriers to applying green measures in the Egyptian market.
 The research methodology comprises the analytical-comparative method. In the analytical part; the paper identifies the current situation of the residential sector energy consumption in Egypt, and the benefits of greening existing buildings for tenants, investors, and owners.
 In the comparative part, the current situation of Egypt's Green Market Business Case is compared with the international one, discussing the challenge of greening the residential buildings. The paper summarizes the opportunities to improve the building energy efficiency, incentives, and policies that are developed to address significant financial and technical awareness to building efficiency. These policies will help enable critical market actors to make decisions to promote energy efficiency in existing buildings.
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Huynh, Amy, Regina Dias Barkokebas, Mohamed Al-Hussein, Carlos Cruz-Noguez, and Yuxiang Chen. "Energy-Efficiency Requirements for Residential Building Envelopes in Cold-Climate Regions." Atmosphere 12, no. 3 (2021): 405. http://dx.doi.org/10.3390/atmos12030405.
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Due to the energy and environmental impacts attributed to the operational phase of the building sector, efforts have been made to improve building energy performance through the implementation of restrictive energy requirements by regulatory bodies. In this context, the primary objective of this paper is to investigate and compare regulations that govern the building envelope energy performance of new residential buildings in cold-climate regions, primarily in Canada, Finland, Iceland, Norway, Sweden, China, and Russia. The aim is to identify similarities and dissimilarities among the energy regulations of these countries, as well as potentials for development of more effective building codes. This study verifies that the investigated energy requirements diverge considerably—for instance, the required thermal resistance per unit area of above-grade exterior walls in Sweden is almost two times that of a similar climate zone in Canada. Based on the comparisons and case analyses, recommendations for energy requirements pertinent to building envelope of new residential buildings in cold-climate regions are proposed.
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Ameera Zakaria, Noor, Mohammad Yusri Hassan, Hayati Abdullah, et al. "Energy efficiency index by considering number of occupants: a study on the lecture rooms in a university building." Indonesian Journal of Electrical Engineering and Computer Science 15, no. 3 (2019): 1154. http://dx.doi.org/10.11591/ijeecs.v15.i3.pp1154-1160.
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<span>The building sector is attributed to approximately 40% of the nation’s energy consumption and this accounts for a significant percentage of the nation’s energy consumption. For this reason, energy efficiency in buildings has now become an important subject in the national energy scenario. Energy Efficiency Index (EEI) is one of the energy consumption indicators that is widely used in the building sector for measuring energy performance. This index is generally measured based on the energy used per unit of building floor area. However, this index is not able to directly identify other factors affecting energy usage. This paper suggests an Energy Efficiency Index (EEI) for determining the performance of lecturer rooms in a university building. Unlike the conventional EEI, the proposed EEI determines the room’s energy usage performance by considering the number of occupants. The study was conducted at the Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM) and the results show that the number of occupants significantly influences the energy usage performance of rooms in a university building.</span>
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Falconi, Pietro. "The Evaluation of Energy Efficiency Policies in the Building Sector: A Regional Analysis Based on the Stochastic Frontier Approach and on the Energy Environmental Kuznets Curve (EKC) and Policy Implications." Tecnica Italiana-Italian Journal of Engineering Science 65, no. 2-4 (2021): 422–32. http://dx.doi.org/10.18280/ti-ijes.652-441.
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The promotion of the Energy Efficiency is one of the priorities of EU energy policy to fight the Climate Change and make Europe climate neutral by 2050 (EC 2020). The civil sector offers high potential for energy efficiency improvement and the buildings are responsible for about 40% of the EU's energy consumption, and 36% of greenhouse gas emissions (EC 2020). In Italy the civil sector (residential and tertiary together), are responsible for approximately 45% of final energy consumption and 17.5% of Italy's CO2 emissions, has a potential in reducing energy consumption of approximately 5,7 Mtoe compared to the base scenario in 2030. The core research question is: “Are national and local energy efficiency policies effective in reducing aggregate energy consumption at regional level in the civil sector?” From the policy maker’s point of view, it is important to understand the effectiveness of the policy instruments introduced to promote energy efficiency. The research framework is based on the frontier analysis and its main objective is to econometrically estimate for the period 2010 to 2017 the energy efficiency level for the civil sector in the Italy regions. The estimates confirm the effectiveness of policy instruments, represented by tax deductions and economic incentives, in creating high potential for energy savings from reduced inefficiency in the civil sector.
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Moazzen, Nazanin, Mustafa Erkan Karagüler, and Touraj Ashrafian. "Life Cycle Energy Assessment of a School Building under Envelope Retrofit: An Approach towards Environmental Impact Reduction." E3S Web of Conferences 111 (2019): 03028. http://dx.doi.org/10.1051/e3sconf/201911103028.
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Energy efficiency of existing buildings is a concept to manage and restrain the growth in energy consumption and one of the crucial issues due to the magnitude of the sector. Educational buildings are in charge of about 15% of the total energy consumption of the non-residential building sector. However, not only operational but also embodied energy of a building should be reduced to get the overall benefits of energy efficiency, where, using energy efficient architectural measures and low emitting materials during every retrofit action can be a logical step. The majority of buildings in Turkey and EU was built earlier than the development of the energy efficiency in the construction sector, hence, without energy retrofit, consume an enormous amount of energy that can be averted significantly by the implementation of some even not advanced retrofit measures. Furthermore, demolishing of a building to construct a new one is not a rational approach concerning cost, time and environmental pollution. The study has been focused on the impact assessment of the various architectural scenarios of energy efficiency upgrading on the Life Cycle Energy Consumption (LCEC) and Life Cycle CO2 (LCCO2) emission. Within the scope of the study, a primary school building is selected to be analysed. Through analysis, the total embodied and operational energy use and CO2 emission regarding the life cycle phase of the building is quantitatively defined and investigated in the framework of life cycle inventory. The paper concentrates on the operation and embodied energy consumption arising from the application of a variety of measures on the building envelope. An educational building with low LCCO2 emissions and LCEC in Turkey is proposed. To exemplify the approach, contributions are applied to a case study in Istanbul as a representative school building. The primary energy consumption of the case study building is calculated with a dynamic simulation tool, EnergyPlus. Afterwards, a sort of architectural energy efficient measures is implemented in the envelope while the lighting and mechanical systems remain constant. The energy used in the production and transportation of materials, which are the significant parts of the embodied energy, are taken into account as well.
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Soares, Nelson, Luísa Dias Pereira, João Ferreira, Pedro Conceição, and Patrícia Pereira da Silva. "Energy efficiency of higher education buildings: a case study." International Journal of Sustainability in Higher Education 16, no. 5 (2015): 669–91. http://dx.doi.org/10.1108/ijshe-11-2013-0147.
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Purpose – This paper aims to propose an energy efficiency plan (with technical and behavioural improvement measures) for a Portuguese higher education building – the Teaching Building of the Faculty of Economics of the University of Coimbra (FEUC). Design/methodology/approach – The study was developed in the context of both the “Green Campus – Challenge for Energy Efficiency in Higher Education” and the Energy for Sustainability Initiative of the University of Coimbra, Portugal. An energy audit was conducted based on the analysis of the energy consumption profiles. A monitoring campaign was carried out to measure and disaggregate the electricity consumption. The consumption of natural gas and water were also assessed. The building envelope and the heating and lighting systems were also evaluated. Some patterns of energy-environmental behaviours of the academic community were investigated through a Web-based survey. Findings – The energy efficiency plan contemplates short-term tangible/intangible actions. It also considers the investment and payback period of the tangible measures. The implementation of three improvement measures in the lighting system would lead to a consumption reduction of about 26,123 kWh/year, avoiding the emission of 3,704 KgCO2/year, for an initial cost of 9,920 (payback period of 3.7 years). Research limitations/implications – Results are restricted to the case study and there are limitations in their generalisation outside of their context. However, they show some broadly implications and trends that have relevance for the higher education sector. This paper highlights the importance of engaging students, faculty and technical staff for working together on the assessment of the energy efficiency of the buildings where they study and work. Social implications – The higher education sector holds important functions in educating the next generation of professionals for a sustainable culture. The categories of activities described in this paper are good examples of what can be done within the academic community for acting towards sustainability. The results also pointed out that making users aware of their energy consumption is a priority towards the energy efficiency in higher education buildings. Originality/value – Reductions on energy consumption are expected if the energy efficiency plan would be implemented. The results of the behavioural study were presented to the FEUC’s board of directors to be integrated in the “Good Practices Manual on Water and Energy Management”.
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Meijer, Frits, and Henk Visscher. "Upgrading Energy Efficient Housing and Creating Jobs: It Works Both Ways." Open House International 39, no. 2 (2014): 34–40. http://dx.doi.org/10.1108/ohi-02-2014-b0005.
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The European Commission and EU member states have prioritised the renovation of the existing housing stock as a means of achieving their energy-efficiency targets. As buildings account for 40% of Europe’s energy consumption and much of this is used in the residential sector a major breakthrough could be realized here. Despite the fact that energy saving targets have been prioritized in EU and national policy programme’s, progress is slow. The actual rate and extent of renovations are by fare not enough to achieve the targets. Although the necessity of energy savings is acknowledged by institutional investors in housing, housing associations, individual homeowners and occupants, it appears to be difficult to get sufficient support for energy efficiency renovations. The current economic situation is an additional barrier preventing large scale investments in energy renovating the housing stock. This article connects the realisation of energy efficiency goals with the creation of jobs in the EU. The shift from new-build to renovation will have considerable effects on employment in especially the construction industry and the qualifications required by the workforce. Studies show that for every €1 million investment in the existing building stock in the form of energy renovation work, 12 to 17 new jobs could be created. Potentially this could lead to may new jobs. However, there are many uncertainties in these calculations. Are these direct or indirect jobs, what sectors would benefit, are these jobs created within the EU and what would be the net effect on the labour market? Nonetheless these uncertainties, the positive employment effects will prevail. A new and ambitious investment programme in the housing sector could not only improve the energy performance of the sector but create 100.000’s of valuable jobs at a time when these are seriously needed.
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Álvarez, José Antonio, Juan Ramón Rabuñal, Dolores García-Vidaurrázaga, Alberto Alvarellos, and Alejandro Pazos. "Modeling of Energy Efficiency for Residential Buildings Using Artificial Neuronal Networks." Advances in Civil Engineering 2018 (November 28, 2018): 1–10. http://dx.doi.org/10.1155/2018/7612623.
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Increasing the energy efficiency of buildings is a strategic objective in the European Union, and it is the main reason why numerous studies have been carried out to evaluate and reduce energy consumption in the residential sector. The process of evaluation and qualification of the energy efficiency in existing buildings should contain an analysis of the thermal behavior of the building envelope. To determine this thermal behavior and its representative parameters, we usually have to use destructive auscultation techniques in order to determine the composition of the different layers of the envelope. In this work, we present a nondestructive, fast, and cheap technique based on artificial neural network (ANN) models that predict the energy performance of a house, given some of its characteristics. The models were created using a dataset of buildings of different typologies and uses, located in the northern area of Spain. In this dataset, the models are able to predict the U-opaque value of a building with a correlation coefficient of 0.967 with the real U-opaque measured value for the same building.
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Tzivanidis, Christos, and Evangelos Bellos. "A Comparative Study of Solar-Driven Trigeneration Systems for the Building Sector." Energies 13, no. 8 (2020): 2074. http://dx.doi.org/10.3390/en13082074.
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The utilization of solar irradiation in the building sector is vital to create sustainable systems. Trigeneration systems are highly efficient systems that usually produce electricity, heating and cooling which are the main energy needs in the buildings. The objective of this work is the energetic and financial investigation of three different solar-driven trigeneration systems that can be applied in buildings with high energy needs (e.g., hospitals or commercial buildings). The parabolic trough solar collector (PTC) is selected to be used because it is the most mature solar concentrating technology. The examined configurations practically are different combinations of organic Rankine cycle (ORC) with heat pumps. System 1 includes a PTC coupled to an ORC which feeds an absorption heat pump machine. System 2 includes a PTC which simultaneously feeds an ORC and absorption machine. System 3 includes a PTC which feeds an ORC and a heat exchanger for heating, while the ORC is fed with and electricity a vapor compression cycle for cooling production. The simple payback period of System 1 is 5.62 years and it is the lowest, with System 2 to have 7.82 years and System 3 to have 8.49 years. The energy efficiency of the three systems is 78.17%, 43.30% and 37.45%, respectively, while the exergy efficiency 15.94%, 13.08% and 12.25%, respectively. System 1 is the best configuration according to energy, exergy and financial analysis. This study is performed with developed thermodynamic models in Engineering Equation Solver and a dynamic model in FORTRAN.
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Sabory, Najib Rahman, Tomonobo Senjyu, Adina Hashemi Momand, et al. "LEED Scores of Residential Buildings in Poor Cities: Kabul City Case." Sustainability 13, no. 12 (2021): 6959. http://dx.doi.org/10.3390/su13126959.
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Urbanization and technology have proven to be detrimental to the environment. Buildings contribute a significant portion of this damage. This issue motivated governments, builders, engineers, and architects to seek ways to reduce buildings’ environmental footprints. Leadership in Energy and Environmental Design (LEED), developed by the U.S. Green Building Council (USGBC), is one of the most widely used strategies to ensure energy efficiency and a clean environment in buildings. In Afghanistan, where there are no active regulatory frameworks for energy saving and efficiency for the building sector, it is imperative to promote the transformation of the building industry and practices towards sustainability. In this regard, the role of the residential building sector is of utmost importance due to its major share in the country’s energy consumption and GHG emissions profile. Thus, this study assesses the energy efficiency and environmental impact of existing buildings in Kabul city concerning the LEED rating system. This research suggests practical steps to improve the sustainability of the residential building stock in Kabul city. Robust sets of data on existing residential buildings in Kabul are collected, classified, evaluated, and compared to LEED standards. This research reveals and concludes that most of the existing buildings in Kabul city are in poor conditions and do not meet the minimum requirements to be a candidate for LEED certification. A detailed analysis of the results has led to recommendations on how these buildings could improve to meet the LEED criteria. This is the first study of its kind conducted for Kabul city residential building. Considering the cross-sectoral nature of the building industry, the findings of this study will contribute to many other areas such as water, transportation, ICT, health, energy and the environment.
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Mugnini, Alice, Fabio Polonara, and Alessia Arteconi. "Energy flexibility in residential buildings clusters." E3S Web of Conferences 197 (2020): 03002. http://dx.doi.org/10.1051/e3sconf/202019703002.
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The building sector represents one of the most energy-consuming worldwide and a great part of its consumption is accounted for residential demand for space heating and cooling. Although it is necessary to promote the buildings energy efficiency, energy flexibility is also of paramount importance to optimize the balance between demand and supply. In fact, an energy flexible building is defined as able to change, in a planned manner, the shape of its energy demand curve, electrical and thermal, while the comfort of the end-users is still guaranteed. Objective of this work is to exploit the energy demand management ability of different buildings composing a cluster, when their aggregated demand derived from electric heating systems (i.e. heat pumps) is subject to demand response (DR) strategies. Users with different occupancy profile are considered. By supposing to be able to activate the energy flexibility of the single building with thermostatic load control, different scenarios of cluster composition are evaluated in order to provide guidelines to implement optimal strategies for energy flexibility exploitation without drawback effects connected to the event.
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AlHashmi, Mohammad, Gyan Chhipi-Shrestha, Rajeev Ruparathna, Kh Md Nahiduzzaman, Kasun Hewage, and Rehan Sadiq. "Energy Performance Assessment Framework for Residential Buildings in Saudi Arabia." Sustainability 13, no. 4 (2021): 2232. http://dx.doi.org/10.3390/su13042232.
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The residential sector consumes about 50% of the electricity produced from fossil fuels in Saudi Arabia. The residential energy demand is increasing. Moreover, a simple building energy performance assessment framework is not available for hot arid developing countries. This research proposes an energy performance assessment framework for residential buildings in hot and arid regions, which focuses on three performance criteria: operational energy, GHG emissions, and cost. The proposed framework has been applied to three types of residential buildings, i.e., detached, attached, and low-rise apartments, in five geographical regions of Saudi Arabia. Design Builder® was used to simulate the energy demand in buildings over a whole year. Four types of efficiency improvement interventions, including double-glazed windowpanes, triple-glazed windowpanes, LED lighting, and split air conditioners, were introduced in 12 combinations. Overall, 180 simulations were performed which are based on 12 intervention combinations, three building types, and five regions. Three performance criteria were evaluated for each simulation and then aggregated using a multi-criteria decision analysis method to identify the best intervention strategy for a given building type and a geographical region in Saudi Arabia. Each building type with interventions consumes higher energy in the western, central, and eastern regions and consumes a lesser amount of energy in the southern and northern regions. The proposed framework is helpful for long-term planning of the residential sector.
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Blundo, F., F. Foti, F. Leone, F. Nocera, and L. Savoca. "The energy-environmental efficiency of the existing building stock through morphological-constructive solutions: the case study of a singlefamily building in Sicily." Renewable Energy and Power Quality Journal 19 (September 2021): 199–204. http://dx.doi.org/10.24084/repqj19.255.
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The protection of environmental resources, both energy and natural, is a current and urgent necessity for contemporary society. Since the building sector is responsible for a large part of energy and environmental consumption, the possibilities for savings in this sector are vast, starting with improving the quality of buildings. Therefore, the ecological orientation of the construction sector today represents a valid and necessary response to the sustainable development requirement to reduce the pressure on the environment in terms of impacts and consumption of resources. This is especially true if applied to the recovery and energy-environmental efficiency of the existing building stock. The aim of this study is to propose a methodology of "good practices" for the rehabilitation of nonhistoric buildings in terms of formal, functional, comfort and environmental quality, a methodology that combines the theme of architectural quality with that of environmental sustainability. In particular, the aim is to demonstrate how morphologicalconstructive solutions can be a valid response to the requirements of energy performance, environmental sustainability and occupant wellbeing. To this end, a case study of the renovation of a single-family building from the 1970s in the municipality of Ispica is reported, in which the proposed methodology is applied.
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Jeong, Young-Sun, and Hae-Kwon Jung. "Energy Efficiency Indicators in Residential Building Sector Using National Statistics." Journal of the architectural institute of Korea planning & design 31, no. 8 (2015): 35–42. http://dx.doi.org/10.5659/jaik_pd.2015.31.8.35.
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Sadegh Zadeh, S. M. "An energy efficiency plan for the Iranian building sub-sector." Energy Policy 35, no. 2 (2007): 1164–71. http://dx.doi.org/10.1016/j.enpol.2006.03.008.
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Nässén, Jonas, and John Holmberg. "Energy efficiency—a forgotten goal in the Swedish building sector?" Energy Policy 33, no. 8 (2005): 1037–51. http://dx.doi.org/10.1016/j.enpol.2003.11.004.
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Altarabsheh, Ahmad, Ibrahim Altarabsheh, Sara Altarabsheh, Nisreen Rababaa, Ayat Smadi, and Doha Obeidat. "A Methodology for Energy Simulation of Risedential Buildings: A Case Study for Amman." Academic Perspective Procedia 1, no. 1 (2018): 772–81. http://dx.doi.org/10.33793/acperpro.01.01.138.
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Green buildings have been gaining in popularity over the past few years in Jordan. This is attributed to environmental and financial reasons directly related to energy consumption and cost. Energy sector in Jordan faces two main challenges which are the fast growing of energy demand and the scarcity of resources to fulfill this demand. Green buildings can save energy by designing them as near Zero Energy Buildings, where they produce amount of energy almost equal the amount of energy they consume. In special cases green buildings can be designed as Net zero energy buildings, where they produce as much energy as they consume. Jordan government encourage people to adopt net zero green buildings by issuing the Renewable Energy and Energy Efficiency Law No. 13 of 2012, that allows selling excessive electricity to electricity companies. Despite these benefits of green buildings, they are not yet the norm in the building sector in Jordan. This can be attributed to the high construction cost of green building compared to traditional one. However, this may not be true if the whole life cycle cost of the building is considered, in which the cost not only include design and construction but also operation and maintenance as well. This paper aims to provide real life cycle cost analysis for a typical residential building in Jordan, and to search different effective building strategies and design scenarios that will lead to a successful near Zero Energy Building. The search will apply main green building strategies recommended for Jordan climatic zone. The outcome of this study is a list of best economically feasible design solutions and system selections that result in near Zero Energy Building in Jordan for residential buildings.
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Xu, Pengpeng, Edwin H. W. Chan, and Patrick T. I. Lam. "A CONCEPTUAL FRAMEWORK FOR DELIVERING SUSTAINABLE BUILDING ENERGY EFFICENCY RETROFIT USING THE ENERGY PERFORMANCE CONTRACTING (EPC) IN CHINA." Journal of Green Building 8, no. 1 (2013): 177–90. http://dx.doi.org/10.3992/jgb.8.1.177.
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Sustainable building has become a future development trend in the building sector. Building Energy Efficiency Retrofit (BEER) provides excellent opportunities to reduce energy consumption in existing buildings, and to promote environmental protection, the rational use of resources, occupants' health, all of which helps to improve the sustainability of existing buildings. Energy Performance Contracting (EPC) provided by Energy Service Companies (ESCOs) is a market mechanism to provide financial and technological support for energy efficiency projects. This paper aims to develop a sustainability promotion framework for BEER projects under the EPC mechanism to link the sustainable performance of BEER with the success factors of this EPC mechanism. Different types of building have different energy consumption characteristics. This research focuses on hotel buildings in China. The paper develops a framework for sustainable BEER through an EPC mechanism in hotel buildings based on the EFQM Excellence Model for business quality management. Interviews were conducted with experts from the hotel industry, from energy service companies and with academics. Based on the developed framework, the study has identified 11 performance indicators for sustainable BEER and 28 success factors of an EPC mechanism. This provides significant groundwork for future study in developing an assessment model to evaluate the sustainability of BEER projects.
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Silvero, Fabiana, Fernanda Rodrigues, and Sergio Montelpare. "A Parametric Study and Performance Evaluation of Energy Retrofit Solutions for Buildings Located in the Hot-Humid Climate of Paraguay—Sensitivity Analysis." Energies 12, no. 3 (2019): 427. http://dx.doi.org/10.3390/en12030427.
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Nowadays, awareness concerning the need to use energy efficiently is increasing significantly worldwide, thus, improving the energy efficiency levels in the building sector has acquired high importance because of their energy saving potential. However, several intervention options are available to achieve high energy efficiency levels in buildings, and the choice must be made considering the efficiency of the solution and the costs involved. Considering this, the present research aimed to develop a parametric study of several energy retrofit solutions for buildings located in the hot-humid climate of Paraguay, in order to analyse their efficiency in terms of comfort rates and cooling energy needs. Furthermore, the Analytic Hierarchy Process (AHP) is employed as a decision-making method to choose the most suitable intervention considering the investment costs required. Thus, threshold values of thermal transmittance for the building thermal envelope components are established through a parametric study and sensitivity analysis of the simulations results. Considering that Paraguay does not have national building energy codes, the outcomes of this research will constitute a support and contribute for the thermal parameters regulation of buildings aiding to improve the energy efficiency of Paraguayan buildings.
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Kariuki, Dorcas Wambui. "ICT for Sustainability or Sustainability in ICT? A Review of the Role of ICT in Enhancing Sustainability versus the Need to Enhance Sustainability in ICT." East African Journal of Information Technology 3, no. 1 (2021): 7–21. http://dx.doi.org/10.37284/eajit.3.1.333.
Full textAbstract:
Is ICT a solution to sustainability problems or is it just a greater environmental problem? Throughout their lifecycle, ICT products and services are associated with significant levels of energy consumption and carbon emissions. On the contrary, despite being one of the main contributors to global carbon emissions, the ICT sector has a crucial role to play in boosting productivity and sustainability in many sectors—education, transport, agriculture, business, buildings, health, power, and manufacturing. To improve their efficiency and mitigate carbon emissions from ICT products, producers and end-users of such ICT products should therefore, employ measures that enhance their sustainability. Such measures identified in this article include the use of sustainable manufacturing processes, sustainable procurement/purchasing of ICT products, proper ICT product use, reuse, recycle, and proper disposal of ICT devices that are out of use. In data centres, such measures include virtualisation, recovery and reuse of waste heat, designing data centres to allow free cooling, control of restricted air conditioning, replacement of old servers and processors with new energy-efficient ones, and locating data centres near renewable energy sources. This is because apart from enhancing sustainability in the ICT sector itself, ICT has the potential to enhance sustainability in other sectors through improvement in efficiency and reduction in carbon emissions. This article discusses how ICT can enhance sustainability in the transport, power, manufacturing, and building sectors, which are the major energy consumers and carbon-emitting sectors.
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Kwiatkowski, Jerzy, and Joanna Rucińska. "Estimation of Energy Efficiency Class Limits for Multi-Family Residential Buildings in Poland." Energies 13, no. 23 (2020): 6234. http://dx.doi.org/10.3390/en13236234.
Full textAbstract:
The need to achieve energy consumption and greenhouse gas emission decreases within the building sector requires the implementation of a supportive legal framework. To fulfil this requirement, a building certification system must be developed that is easily understandable for end users. In Poland, assessments of the energy performance of buildings are based on primary energy indicator verification. However, this parameter is difficult to understand for building owners or for tenants. Therefore, in this study, energy efficiency class limits and a heating indicator for energy needs indicator have been estimated for multi-family buildings in Poland. To achieve this purpose, a reference building was used and 180 calculation variants were developed, which considered the following variables: 3 types of climate data, 4 values of building shape ratios, 3 types of ventilation, 3 thermal transmittance standards and 3 windows area ratios to the external wall. The results showed that the greatest influences on the need for energy used for heating were the type of ventilation used and the local climate. This study shows that the methodology used is adequate for energy efficiency class limits estimations involving multi-family buildings in Poland.
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Lis, Piotr. "Energy saving and reduction of emissions in heating residential buildings in Poland – potential and selected activities." E3S Web of Conferences 116 (2019): 00044. http://dx.doi.org/10.1051/e3sconf/201911600044.
Full textAbstract:
The communal and living sector, to the extent that it is the sub-sector of buildings with a majority share of residential buildings, on average, account for approximately 41% of total energy consumption in the European Union. Due to a large share in the total energy consumption, the buildings sector has a significant potential to improve the energy efficiency of existing buildings and thus significantly reduce emission of air pollutants. One way is through thermal modernization. The article presents the expected energy and environmental effects of measures which adjust the existing residential buildings to the requirements in force in Poland since 2021. It has been assumed that the energy demand for heating buildings will be limited to the level of 55 kWh/(m2year) for multi-family residential buildings and 60 kWh/(m2year) for single-family residential buildings. The calculations show that it is possible to reduce energy consumption for heating of residential buildings by over 70%, which will result in a reduction of the total air pollutant emissions from housing heating, in relation to the situation in 2011. The article indicates existing reserves in thermal modernization activities and related problems based on the analysis of selected parameters of residential buildings.