Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Energy Performance In Buildings And Quality Of Life
Download Energy Performance In Buildings And Quality Of Life full books in PDF, epub, and Kindle. Read online Energy Performance In Buildings And Quality Of Life ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Energy Performance in Buildings and Quality of Life by : Kristian Fabbri
Download or read book Energy Performance in Buildings and Quality of Life written by Kristian Fabbri and published by MDPI. This book was released on 2020-12-10 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buildings allow several kinds of human activity: work, eat, sleep, play, etc., and they have a role in determining quality of life: ugly and uncomfortable buildings can be the worst place to live. The energy performance of buildings has a special role in improving and guaranteeing quality of life because it concerns architectural design, energy cost, consumption and energy poverty, and thermal comfort—both indoor and outdoor. Following a multidisciplinary approach, we present several case studies and articles about the correlation between building and quality of life. The included research highlights the relationship between BEP and quality of life in terms of wellbeing and thermal comfort and household smartness following UE Directive 844/2018, as well as the reduction of energy poverty and the impact of buildings on the environment and global warming. Also in this book is a city-scale study that attempts to evaluate the effect of climate change on building performance and building energy efficiency mapping and, moreover, reports some cases of indoor environment quality as well as thermal comfort in nearly zero energy buildings; finally, detailed scientific literature on energy poverty and outdoor wellbeing quality of life are presented.
Book Synopsis Energy Performance in Buildings and Quality of Life by : Kristian Fabbri
Download or read book Energy Performance in Buildings and Quality of Life written by Kristian Fabbri and published by . This book was released on 2020 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buildings allow several kinds of human activity: work, eat, sleep, play, etc., and they have a role in determining quality of life: ugly and uncomfortable buildings can be the worst place to live. The energy performance of buildings has a special role in improving and guaranteeing quality of life because it concerns architectural design, energy cost, consumption and energy poverty, and thermal comfort--both indoor and outdoor. Following a multidisciplinary approach, we present several case studies and articles about the correlation between building and quality of life. The included research highlights the relationship between BEP and quality of life in terms of wellbeing and thermal comfort and household smartness following UE Directive 844/2018, as well as the reduction of energy poverty and the impact of buildings on the environment and global warming. Also in this book is a city-scale study that attempts to evaluate the effect of climate change on building performance and building energy efficiency mapping and, moreover, reports some cases of indoor environment quality as well as thermal comfort in nearly zero energy buildings; finally, detailed scientific literature on energy poverty and outdoor wellbeing quality of life are presented.
Book Synopsis Fundamentals of Building Energy Dynamics by : Bruce D. Hunn
Download or read book Fundamentals of Building Energy Dynamics written by Bruce D. Hunn and published by MIT Press. This book was released on 1996 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Building Energy Dynamics assesses how and why buildings use energy, and how energy use and peak demand can be reduced. It provides a basis for integrating energy efficiency and solar approaches in ways that will allow building owners and designers to balance the need to minimize initial costs, operating costs, and life-cycle costs with need to maintain reliable building operations and enhance environmental quality both inside and outside the building. Chapters trace the development of building energy systems and analyze the demand side of solar applications as a means for determining what portion of a building's energy requirements can potentially be met by solar energy. Following the introduction, the book provides an overview of energy usepatterns in the aggregate U.S. building population. Chapter 3 surveys work onthe energy flows in an individual building and shows how these flows interact to influence overall energy use. Chapter 4 presents the analytical methods, techniques, and tools developed to calculate and analyze energy use in buildings, while chapter 5 provides an extensive survey of the energy conservation and management strategies developed in the post-energy crisis period. The approach taken is a commonsensical one, starting with the proposition that the purpose of buildings is to house human activities, and that conservation measures that negatively affect such activities are based on false economies. The goal is to determine rational strategies for the design of new buildings, and the retrofit of existing buildings to bring them up to modern standards of energy use. The energy flows examined are both large scale (heating systems) and small scale (choices among appliances). Solar Heat Technologies: Fundamentals and Applications, Volume 4
Book Synopsis Comparison of energy efficient and green buildings by : Shrestha, Shritu
Download or read book Comparison of energy efficient and green buildings written by Shrestha, Shritu and published by Universitätsverlag der TU Berlin. This book was released on 2016-04-18 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: The adverse environmental impacts from inefficient building construction increase if measures to reduce energy and resource use, through stringent building policies and efficient technology, are not implemented in developed and developing countries. To illustrate a holistic approach to reducing buildings’ energy and resources, the comparison of energy efficient and green buildings in terms of their technological aspects and their policy context in developed and developing countries, mainly in Europe, the USA and India, is presented together with a policy package recommendation for Nepal. A quality review of multiple literature sources, supported by various expert opinions, were the methods used for this in-depth analysis. It discusses that mandatory building standards, voluntary labels, information instruments and financial incentives are the most effective combination for the shift towards market transformation, that results in a higher share of energy efficient and green buildings. The lesson such as higher compliance with, and enforcement of, building energy standards can be seen in developed countries (e.g. Germany). Looking at a building’s life cycle perspective, it is not sufficient to focus solely on operational energy reduction in higher energy efficient buildings as this is achieved by the increased use of energy intensive materials. Green requirements must be considered in updating building energy standards and labels, particularly for developed countries. Green building certification will also become more effective when the stringency of energy standards is higher and when the whole building life cycle assessment is considered. Due to the increasing scarcity of energy and resources, many developing countries are forced to face up to the need for holistic green buildings. Although baseline standards are not as high as in most developed countries and national financial support is low, the gradual move towards making the standards more stringent and incorporating the wider scope of resource saving are positive developments in developing countries (e.g. India). However, to achieve significant success, strategies must include the establishment of a suitable funding environment, a political commitment and a strong government vision for long term and sustainable building construction. The challenges faced by Nepal are even greater due to the fast pace of urban growth and the absence of energy and resource efficient buildings policies, highlighting the need for an effective policy package. Overall, this dissertation demonstrates how energy efficient and green buildings are interlinked. Green buildings reinforced with higher levels of energy efficiency and energy efficient buildings incorporating green requirements are stepping-stones for achieving greater building energy and resource efficiencies. And a suitable policy package fosters its development. Nachteilige Umweltwirkungen eines ineffizienten Bausektors nehmen zu, wenn Maßnahmen zur Reduktion des Energie- und Ressourcenbedarfs in Form stringenter Gebäudepolitiken und effizienter Technologie in Industrieländer und Entwicklungsländer nicht umgesetzt werden. Um einen ganzheitlichen Ansatz zur Reduktion des Energie- und Ressourcenbedarfs von Gebäuden abzubilden, werden energieeffiziente und grüne Gebäude hinsichtlich technologischer Aspekte und ihres Politikkontextes in Industrie- und Entwicklungsländern verglichen. Die Analysen beziehen sich hauptsächlich auf Europa, die USA und Indien und werden ergänzt um Empfehlungen für ein Maßnahmenpaket für Nepal. Ein Review unterschiedlicher Literaturquellen, unterstützt durch diverse Expertenmeinungen, stellt die methodische Grundlage für diese detaillierte Analyse dar. Es diskutiert dass Bauvorschriften und -standards, freiwillige Label, Informationsinstrumente und finanzielle Anreize bilden die effektivste Kombination für die Einleitung einer Markttransformation, die schließlich zu einem höheren Anteil energieeffizienter und grüner Gebäude führt. Gute Beispiele einer höheren Beachtung von Gebäudeenergiestandards und deren Weiterentwicklung existieren in verschiedenen Industrieländern wie Deutschland. Unter Berücksichtigung des Lebenszyklus von Gebäuden ist es nicht ausreichend, nur die Reduktion des Energieverbrauchs in der Nutzungsphase der Gebäude zu beachten, weil diese den Einsatz von Materialien mit hohem Energieverbrauch in der Herstellung bedeuten kann. Grüne Anforderungen muss in der zukünftigen Entwicklung von Gebäudeenergiestandards und -labels berücksichtigt werden, insbesondere in Industrieländern. Die Zertifizierung grüner Gebäude wird auch effektiver werden, wenn Energiestandards verschärft werden und wenn vollständige Gebäude-Ökobilanzen berücksichtigt werden. Auf Grund steigender Knappheit von Energie und Ressourcen sind viele Entwicklungsländer gezwungen, sich der Notwendigkeit grüner Gebäude zu stellen. Obwohl das Niveau von Mindeststandards unterhalb dessen der meisten entwickelten Ländern liegt und die finanzielle Unterstützung gering ist, sind die schrittweise Verschärfung der Standards und die Einbeziehung der weiteren Perspektive der Ressourcenschonung positive Entwicklungen in Entwicklungsländer wie Indien. Um erfolgreich zu sein, müssen bestehende Strategien umfasst werden, an die Schaffung eines geeigneten Förderrahmens, die politische Bekenntnis und eine starke Regierungsvision für einen langfristigen und nachhaltigen Bausektor. Die Herausforderungen, mit denen Nepal konfrontiert wird, sind noch umfangreicher. Sie resultieren aus einem schnellen urbanen Wachstum und dem Fehlen von energie- und ressourceneffizienten Gebäudepolitiken. Die Erforderlichkeit eines effektiven Maßnahmenpakets für Nepal wird hierdurch unterstrichen. Insgesamt wird hierdurch der Zusammenhang zwischen energieeffizienten und grünen Gebäuden aufgezeigt. Die verstärkte Berücksichtigung von Energieeffizienz in grünen Gebäuden sowie von Nachhaltigkeitsanforderungen in energieeffizienten Gebäude sind Sprungbretter für die verbesserte Energie- und Ressourceneffizienz von Gebäuden. Eine solche Entwicklung wird durch ein geeignetes Maßnahmenpaket unterstützt.
Book Synopsis Energy Performance of Buildings by : Sofia-Natalia Boemi
Download or read book Energy Performance of Buildings written by Sofia-Natalia Boemi and published by Springer. This book was released on 2015-11-23 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes the trends and technologies of green and energy efficient building, identifying strategies for implementing energy savings and enabling the use of renewable resources in residential, commercial, healthcare and educational building sectors. The authors focus on best practices in temperate climates, providing in-depth coverage of urban heat island, climate change and fuel poverty mitigation through architectural optimization, leveraging renewable energy sources and utilization of cutting-edge cooling materials. Pragmatic emphasis is placed on improving the energy performance of existing building stock to meet short and long term objectives of climate and energy conservation strategies. Engineers, architects, designers, students, policy makers and efficiency professionals will all gain valuable insights and ideas from this practical handbook to greening the built environment.
Book Synopsis Issues in Green Building and the Federal Response by : Eric A. Fischer
Download or read book Issues in Green Building and the Federal Response written by Eric A. Fischer and published by DIANE Publishing. This book was released on 2010-11 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: (1) Intro.; (2) What Is Green Building (GB)?: Energy; Water; Materials; Waste; Health; Siting; Serviceability; Disaster Resistance; Integration: Balance Among Elements; Balance Across Stages; Interdependence; Leadership in Energy and Environ. Design (LEED); Other Systems: Performance; Cost; Measurement; Market Penetration; Approach; (3) Legislative and Policy Framework; Energy Policy Act of 1992, and 2005; Energy Independence and Security Act of 2007; ARRA of 2009; Executive Order 13423, and 13514; (4) Programs and Activities of Selected Fed. Agencies; GSA; DoE; EPA; Office of the Fed. Environ. Exec.; NIST; HUD; (7) Issues for Congress: Oversight; Adoption and Implementation of GB. Charts and tables.
Book Synopsis Energy, People, Buildings by : Judit Kimpian
Download or read book Energy, People, Buildings written by Judit Kimpian and published by Routledge. This book was released on 2021-03-04 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy performance feedback is an essential tool in addressing the current climate crisis. However, this is not simply another theoretical text about energy performance in buildings. This book is for anyone who wants to better understand how energy is used in buildings, and how to drive down operational energy use – whether you’re an architect, student, client, building services engineer, contractor, building operator or other stakeholder. Focusing on evidence from feedback on buildings in use, it explains what it takes to get them to perform as expected, as well as the reasons why they often fail. Energy, People, Buildings draws extensively on the findings of studies, UK government-funded building performance evaluations and on original research into seven case studies from across the UK and abroad that have achieved exemplary energy use through building performance feedback. Providing a clear roadmap to understanding aspects that impact building users’ comfort and satisfaction, it also outlines the factors behind energy use and how to track it across the life of a project to ensure that your building performs as intended. Case studies include: the Everyman Theatre, Liverpool; Rocky Mountain Institute Innovation Center, Colorado; and Carrowbreck Meadow, Norwich. Featured architects: AHMM, AHR, Architype, Hamson Barron Smith, Haworth Tompkins, Henning Larsen Architects and ZGF Architects.
Book Synopsis Handbook of Energy Efficiency in Buildings by : Umberto Desideri
Download or read book Handbook of Energy Efficiency in Buildings written by Umberto Desideri and published by Butterworth-Heinemann. This book was released on 2018-11-12 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Energy Efficiency in Buildings: A Life Cycle Approach offers a comprehensive and in-depth coverage of the subject with a further focus on the Life Cycle. The editors, renowned academics, invited a diverse group of researchers to develop original chapters for the book and managed to well integrate all contributions in a consistent volume. Sections cover the role of the building sector on energy consumption and greenhouse gas emissions, international technical standards, laws and regulations, building energy efficiency and zero energy consumption buildings, the life cycle assessment of buildings, from construction to decommissioning, and other timely topics. The multidisciplinary approach to the subject makes it valuable for researchers and industry based Civil, Construction, and Architectural Engineers. Researchers in related fields as built environment, energy and sustainability at an urban scale will also benefit from the books integrated perspective. Presents a complete and thorough coverage of energy efficiency in buildings Provides an integrated approach to all the different elements that impact energy efficiency Contains coverage of worldwide regulation
Book Synopsis Creating Healthy and Sustainable Buildings: Identification of health risk factors and their parameters by : Mateja Dovjak
Download or read book Creating Healthy and Sustainable Buildings: Identification of health risk factors and their parameters written by Mateja Dovjak and published by . This book was released on 2019 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The open access book discusses human health and wellbeing within the context of built environments. It provides a comprehensive overview of relevant sources of literature and user complaints that clearly demonstrate the consequences of lack of attention to health in current building design and planning. Current designing of energy-efficient buildings is mainly focused on looking at energy problems and not on addressing health. Therefore, even green buildings that place environmental aspects above health issues can be uncomfortable and unhealthy, and can lead to public health problems. The authors identify many health risk factors and their parameters, and the interactions among risk factors and building design elements. They point to the need for public health specialists, engineers and planners to come together and review built environments for human wellbeing and environmental sustainability. The authors therefore present a tool for holistic decision-making processes, leading to short- and long-term benefits for people and their environment.
Book Synopsis Energy Efficiency in the Urban Environment by : Heba Allah Essam E. Khalil
Download or read book Energy Efficiency in the Urban Environment written by Heba Allah Essam E. Khalil and published by CRC Press. This book was released on 2015-02-12 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy Efficiency in the Urban Environment is a study of energy crisis, urbanisation, and climate change, as well as a discussion of how to combat these global challenges. With a special focus on Egypt, this book addresses the macroscale of urbanism from the perspective of city dwellers' quality of life, and explores the microscale of buildings and
Book Synopsis Creating Healthy and Sustainable Buildings by : Mateja Dovjak
Download or read book Creating Healthy and Sustainable Buildings written by Mateja Dovjak and published by Springer. This book was released on 2019-05-28 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: The open access book discusses human health and wellbeing within the context of built environments. It provides a comprehensive overview of relevant sources of literature and user complaints that clearly demonstrate the consequences of lack of attention to health in current building design and planning. Current designing of energy-efficient buildings is mainly focused on looking at energy problems and not on addressing health. Therefore, even green buildings that place environmental aspects above health issues can be uncomfortable and unhealthy, and can lead to public health problems. The authors identify many health risk factors and their parameters, and the interactions among risk factors and building design elements. They point to the need for public health specialists, engineers and planners to come together and review built environments for human wellbeing and environmental sustainability. The authors therefore present a tool for holistic decision-making processes, leading to short- and long-term benefits for people and their environment.
Book Synopsis Architecture and Energy Efficiency by : Sergi Costa Duran
Download or read book Architecture and Energy Efficiency written by Sergi Costa Duran and published by . This book was released on 2011 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Architecture and Energy Efficiency.
Book Synopsis Healthy and energy efficient buildings by : Sunil K. Sansaniwal
Download or read book Healthy and energy efficient buildings written by Sunil K. Sansaniwal and published by Frontiers Media SA. This book was released on 2023-12-21 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Research Topic on 'Healthy and Energy Efficient Buildings' focuses on the emerging need for sustainable and healthy indoor environments. The built environment contributes significantly to energy consumption and environmental degradation, leading to adverse effects on human health and well-being. Therefore, this Research Topic aims to bring together cutting-edge research that addresses the complex interplay between building energy efficiency and occupant health. The scope of the Research Topic covers topics such as energy efficiency, indoor environmental quality, sustainable energy, health and well-being, building codes and standards, energy management and green building practices. The ultimate goal of the Research Topic is to promote sustainable building practices and enhance the well-being of building occupants while reducing the environmental impact of buildings. While energy efficiency has become a top priority in building design, there has been less emphasis on creating indoor environments that are conducive to good health. To achieve the goal of this Research Topic, recent advances in building design, construction, and operation must be incorporated. These include the use of advanced materials and technologies, such as smart sensors and automation systems that can monitor and control indoor air quality, temperature, and lighting levels to create optimal indoor conditions for occupants. Additionally, the integration of renewable energy sources, such as solar and wind power, can help reduce the carbon footprint of buildings. In order to promote healthy buildings, there is a need for more research on the impact of building design and materials on indoor air quality and occupant health. This includes exploring the use of natural ventilation and passive cooling strategies, as well as the use of low-emitting materials and finishes that do not off-gas harmful chemicals. This Research Topic seeks to address the need for sustainable buildings that prioritize both energy efficiency and occupant health.
Book Synopsis Improving the Energy Performance of Buildings by : Charles Ries
Download or read book Improving the Energy Performance of Buildings written by Charles Ries and published by Rand Corporation. This book was released on 2009 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines how policies to increase energy efficiency in buildings in the European Union and Australia have worked and draws implications for the design of similar public policies for the United States. It appears that effective policies to promote energy efficiency can be devised using information disclosure, building codes, financial incentives, and benchmarking. Insights are presented to help designers of analogous U.S. policies.
Book Synopsis Optimal Design and Retrofit of Energy Efficient Buildings, Communities, and Urban Centers by : Moncef Krarti
Download or read book Optimal Design and Retrofit of Energy Efficient Buildings, Communities, and Urban Centers written by Moncef Krarti and published by Butterworth-Heinemann. This book was released on 2018-03-27 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimal Design and Retrofit of Energy Efficient Buildings, Communities, and Urban Centers presents current techniques and technologies for energy efficiency in buildings. Cases introduce and demonstrate applications in both the design of new buildings and retrofit of existing structures. The book begins with an introduction that includes energy consumption statistics, building energy efficiency codes, and standards and labels from around the world. It then highlights the need for integrated and comprehensive energy analysis approaches. Subsequent sections present an overview of advanced energy efficiency technologies for buildings, including dynamic insulation materials, phase change materials, LED lighting and daylight controls, Life Cycle Analysis, and more. This book provides researchers and professionals with a coherent set of tools and techniques for enhancing energy efficiency in new and existing buildings. The case studies presented help practitioners implement the techniques and technologies in their own projects. Introduces a holistic analysis approach to energy efficiency for buildings using the concept of energy productivity Provides coverage of individual buildings, communities and urban centers Includes both the design of new buildings and retrofitting of existing structures to improve energy efficiency Describes state-of-the-art energy efficiency technologies Presents several cases studies and examples that illustrate the analysis techniques and impact of energy efficiency technologies and controls
Book Synopsis Architectural Energy Efficiency by : Nasrollahi, Farshad
Download or read book Architectural Energy Efficiency written by Nasrollahi, Farshad and published by Universitätsverlag der TU Berlin. This book was released on 2013-06-14 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy saving in buildings through cost and energy-intensive measures, such as the application of additional building materials and technologies, is only possible with a great consumption of resources and CO2 emissions for their production. For low energy buildings, the investment costs, including user costs and governmental subsidies, are generally high, and construction is not always economically viable in consideration of the national capital in the present economic conditions of most countries. For these reasons, it is first of all necessary to apply cost and resource-efficient measures to save energy in buildings and then make use of additional cost and energy-intensive measures by improving the thermal envelope, the HVAC system or by installing energy generating systems. One of the most cost effective and ecological methods of energy saving in buildings is the reduction of energy requirements through climate responsive architecture. Due to the fact that energy saving through the optimization of architecture is not only cost-neutral, resource-efficient and carbon-neutral but also has a very high energy-saving potential, the first and most important strategy to save energy should be an optimized and climate responsive design. Energy saving through optimized architectural design is economically and ecologically sustainable. The development of building simulation science in the last decades has made it easier to study the energy performance of buildings. Tools have made it possible to predict the complex behavior of buildings regarding the climate. Except for the comparison of different building typologies to find the most efficient, there are no other methods to achieve energy savings through the architectural design, which can be applied by a variety of building types and climates. Therefore, in order to encourage the optimization of architectural design, it is necessary to improve these methods which represent strategies to significantly reduce the energy demand of buildings. Architectural Energy Efficiency is a parametric method which separately studies the effects of various energy-related architectural factors on the energy demand of buildings by using dynamic energy simulations to find the, from an energy efficiency point of view, optimum value for each of these. The architectural factors include orientation, building elongation, building form, opening ratio in different orientations, sun shading, natural ventilation etc. The research process that led to the formulation of the Architectural Energy Efficiency method is based on a series of simulations carried out by a dynamic simulation software tool (DesignBuilder) to calculate the energy demands of a building with different variants for a single architectural feature. The aim of the simulations is to find an optimum set of energy-related variables that result in the best and most efficient energy performance for a specific building type and climate. This method of efficiency illustrates the effects different architectural features have on the various energy demands of buildings. The criteria are derived from the application of this method for a specific building occupation and climate, and can be applied in the design process of buildings, which leads to improvements of the energy performance and a reduction of resource consumption. As the architectural design affects the heating and cooling as well as the lighting energy demands of buildings, the optimum value of each factor must be based on these three aspects. The heating, cooling and lighting energy demands of buildings all behave very differently. Therefore, these three energy demands together (i. e. the sum of heating, cooling and lighting energy) must also be applied as a criterion to study the building energy performance and find the optimum value for each architectural feature. The criteria for selecting the best variant can not only be based on the total energy demand, but should also consider the primary energy demand, the CO2 emissions, energy costs (for heating, cooling and lighting), life cycle costs, etc. The application of these findings to the architectural design of buildings minimizes the energy demand, the CO2 emissions and energy costs of the building, does not, however, affect the initial building costs. The advantages of energy saving through optimizing the architectural design are not only the improvement of the building’s energy performance, but also the fact that the energy saving is cost and resource-efficient. This means that the energy demand of a building will decrease without increasing the investment costs of the building and without consuming any resources and energy for the production of additional building materials. The cost and resource efficiency contributes towards the economic and ecological sustainability of a building during the full life cycle.
Book Synopsis Energy renovation of multi-family buildings in Sweden by : Lina La Fleur
Download or read book Energy renovation of multi-family buildings in Sweden written by Lina La Fleur and published by Linköping University Electronic Press. This book was released on 2019-09-18 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Residential buildings account for 27% of the final energy use in the European Union. In cold climates, space heating represents the largest proportion of the energy demand in residential buildings. By implementing energy efficiency measures (EEMs) in existing buildings, energy use can be significantly reduced. The Energy Performance of Buildings Directive states that renovations of buildings offer an opportunity to improve energy efficiency. Renovations that include measures implemented with the specific purpose of reducing energy use are referred to as energy renovations. In addition to improving energy efficiency, an energy renovation can also improve the indoor environment. Sweden, like many other European countries, faces the challenge of renovating an ageing building stock with poor energy performance. Improving energy efficiency and performing energy renovations in a cost-effective manner is central, and optimization approaches are often used to identify suitable EEMs and energy renovation approaches. New buildings usually feature better energy performance compared to older buildings, and one approach for reducing energy use in the building sector could be to demolish old buildings with poor thermal performance and build new buildings with better thermal performance. The aim of this thesis is to evaluate energy renovations of multi-family buildings with regard to space heating demand, life cycle costs, indoor environment and primary energy use. The choice between energy renovation of a multi-family building and the demolition and construction of a new one is also investigated with regard to life cycle costs (LCCs). A Swedish multi-family building in which energy renovation has been carried out is used as a case study. The building was originally constructed in 1961 and has a lightweight concrete construction. The renovation included improving the thermal performance of the building envelope and replacing the exhaust air ventilation system with a mechanical supply and exhaust air ventilation system with heat recovery. The methods used in the studies include dynamic whole building energy simulation, life cycle cost analysis and optimizations, and a questionnaire on indoor environment perception. Extensive field measurements have been performed in the building prior to and after renovation to provide input data and to validate numerical predictions. In addition to the studied building, the analysis of the choice between energy renovation and the demolition and construction of a new building includes three other building construction types, representing common Swedish building types from the 1940s, 1950s and 1970s. The analysis shows that the energy renovation led to a 44% reduction in space heating demand and an improved indoor environment. The indoor temperature was higher after the renovation and the perception of the indoor temperature, air quality and noise in the building improved. The EEMs implemented as part of the energy renovation have a slightly higher LCC than the optimal combinations of EEMs identified in the LCC optimization. It is not cost-optimal to implement any EEMs in the building if the lowest possible LCC is the objective function. Attic insulation has a low cost of implementation but has limited potential in the studied building with its relatively good thermal properties. Insulation of the façade is an expensive measure, but has a great potential to reduce heat demand because of the large façade area. Façade insulation is thus required to achieve significant energy savings. Heat recovery in the ventilation system is cost-effective with an energy saving target above 40% in the studied building. The primary energy factors in the Swedish Building Code favor ground source heat pumps as a heat supply system in the studied building. The LCC of renovation is lower compared to demolishing and constructing a new building. A large proportion of the LCC of demolition and new construction relates to the demolition of the existing building. In a building with a high internal volume to floor area ratio, it is not always possible to renovate to the same energy performance level as when constructing a new building. A more ambitious renovation approach is also needed compared to a building with a smaller volume to floor area ratio. Nära 27 % av den totala energianvändningen i den Europeiska Unionen sker i bostäder. I länder med kallt klimat används den största delen till uppvärmning. Genom att implementera energieffektiviseringsåtgärder i befintliga byggnaden kan energiprestandan signifikant förbättras. Europeiska Unionens direktiv om byggnaders energiprestanda framhåller att ett tillfälle att förbättra byggnaders energieffektivitet finns då byggnader ska renoveras. Byggnadsrenoveringar som innehåller åtgärder som implementeras med det primära syftet att minska energianvändningen kallas ofta energirenoveringar. Utöver energieffektivisering kan energirenoveringar ofta förbättra inomhusmiljön i byggnaden. Som många andra Europeiska länder står Sverige inför utmaningen att renovera ett åldrande byggnadsbestånd med låg energiprestanda. Kostnadseffektivitet är centralt vid energirenoveringar och energieffektivisering och optimeringsansatser är vanliga för att identifiera vilka energieffektiviseringsåtgärder som bör implementeras. Nya byggnader har som regel bättre energiprestanda jämfört med äldre byggnader, och en ansats till ett minska energianvändningen i byggnadssektorn överlag är således att riva äldre byggnader med låg energiprestanda och konstruera nya byggnader med bättre energiprestanda. Syftet med denna avhandling är att utvärdera energirenoveringar av flerfamiljshus avseende effekterna på uppvärmningsbehov, livscykelkostnader, inomhusmiljö och primärenergianvändning. Valet mellan energirenovering kontra att riva och bygga en ny byggnad analyseras också utifrån ett livscykelkostnadsperspektiv. För att studera detta har en svensk flerfamiljsbyggnad som genomgått energirenovering studerats. Byggnaden konstruerades 1961 och har en lättbetongstomme. När byggnaden renoverades förbättrades prestandan hos byggnadens klimatskal och frånluftsventilationssystemet byttes ut mot ett balanserat mekanisk ventilationssystem med värmeåtervinning. Metoderna som använts i studierna i denna avhandling är dynamisk byggandssimulering, beräkning och optimering av livscykelkostnader, samt en enkätstudie om hur de boende uppfattar sin inomhusmiljö. Omfattande mätningar har utförts i byggnaden och har använts som indata och för att validera resultaten. Utöver den studerade byggnaden har tre andra byggnadstyper inkluderats i analysen av valet mellan energirenovering och att riva och konstruera en ny byggnads. Dessa byggnadstyper representerar vanliga svenska byggnadstyper från 1940-, 1950- och 1970-talet. Analyserna visar att den renovering som genomfördes i byggnaden ledde till en minskning av uppvärmningsbehovet med 44 % och en förbättring av inomhusmiljön. Inomhustemperaturen var högre efter renoveringen, och de boende uppfattade temperaturförhållanden, luftkvalitet och bullersituationen som bättre efter renoveringen. De energieffektiviserande åtgärder som implementerades vid renoveringen gav en något högre livscykelkostnad än de åtgärder som identifierades som optimala genom livscykelkostnadsoptimering. Det är inte kostnadseffektivt att implementera några energieffektiviseringsåtgärder som del av renoveringen om den lägsta livscykelkostnaden är målsättningen. Vindsisolering är en förhållandevis billigt åtgärd att genomföra, men har begränsad potential i den studerade byggnaden vars vind redan har relativt god termisk prestanda. Fasadisolering kräver en större investering, men har större potential att minska energianvändning på grund av den stora fasadytan. Detta innebär att det är nödvändigt att isolera fasaden för att uppnå hög energibesparing. Värmeåtervinning i ventilationssystemet är kostnadsoptimalt om ett energisbesparingsmål på mer än 40 % ställs på energirenoveringen. Primärenergifaktorerna i den svenska byggnadskoden gynnar bergvärmepump som energitillförselsystem i de studerade byggnaden. Kostnaden för att energirenovera är lägre än att riva och bygga en ny byggnad. En stor andel av kostnaderna vid rivning och nybyggnation är kopplad till rivning och bortforsling av rivningsmassa. I byggnadstyper med stor inre volym i förhållande till uppvärmd golvyta är det inte alltid möjlig att energirenovera till en energiprestanda som är lika god som en ny byggnad. Det krävs också en mer ambitiös renovering för att uppnå samma energiprestanda som en byggnad med mindre inre volym i förhållande till uppvärmd golvyta.
