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Assessment of natural and recycled materials in buildings
Stránská, Zuzana ; Ostrý, Milan (referee) ; Lupíšek,, Antonín (referee) ; Sedlák, Jiří (advisor)
Life-Cycle Assessment (LCA) is an analytic method for evaluation of environmental impacts of products, services and technologies. It is associated with all the stages of a product's life. The environmental impacts are evaluated on the basis of material and energetic flows, which are in influence with the environment. These impacts are always determined in the relation with the function of the product or the service and so it is possible to compare them with the other alternatives. One of the most important reasons why I have chosen this dissertation thesis subject was the growing public interest in impacts of the building constructions on the environment and human organism. Only a few experts and scientific research centres deal with the problem of environmental impacts of the buildings in the Czech Republic so the main goal of this thesis is to help with a spreading a knowledge about it. There are four main problems to solve in the thesis: determination of environmental impacts of selected materials which are missing in available databases, creation of life cycle models of evaluated buildings, determining the most appropriate functional unit and determining the contents of the recommended LCA protocol for building analysis. In the first phase of the thesis there was built a detailed life cycle model of the reference building on the basis of available documents and databases. This "cradle to cradle" LCA model was then optimized for a large number of life cycle scenarios to determine the significance of the impact of individual variables on the overall environmental impact of the building. The knowledge gained from this analysis was applied to the lifecycle models of other buildings and then there was assembled the recommended form of the LCA protocol. In the final stage, the results of the environmental impacts were quantified on the different functional units which were used for determining the appropriate form.
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Environmental Assessment of Residential Building Renovations
Struhala, Karel ; Ostrý, Milan (referee) ; Lupíšek,, Antonín (referee) ; Košíčková, Ivana (advisor)
One of the methods utilized for quantification of environmental impacts of human activities is Life-Cycle Assessment (LCA). This dissertation applies the method on renovations of residential buildings in the Czech Republic. The reason is high potential for environmental savings in existing building stock and lack of such works in the Czech conditions. Therefore the dissertation deals with LCA of building renovations to increase the knowledge in this field. Moreover it also questions and evaluates accuracy of building LCA in general to increase understanding of differences and inaccuracies that are often admitted, but seldom analysed in literature. The dissertation includes five LCAs of two case studies: a block-of-flats in Brno and a terraced house in a nearby village. First case study includes LCAs of the original state and renovation of the block-of-flats. The second case study describes LCAs of the original state, partial reconstruction or demolition and new construction of the terraced house. The LCAs are performed in two software tools: Eco-Bat 4.0 and GaBi 4. Detailed models of the evaluated buildings are based on available designs. Environmental impacts are calculated in four impact categories predefined in Eco-Bat 4.0 to enable comparison of results: Ecological Scarcity, Cumulative Energy Demand (or Primary Energy in GaBi 4), Non-Renewable Energy and Global Warming Potential. The accuracy of the performed LCAs is tested in up to 324 different scenario combinations considering variable service life of building materials, construction waste quantities, waste management and transport distances. Generally, the results confirm environmental efficiency of building renovations. The renovation of block-of-flats results in 17.39% average reduction of total environmental impacts. Demolition and new construction of the terraced house result in 76.83% average savings. However, the variation of results is rather high due to tested scenario combinations: up to 56.06%.
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Environmental Assessment of Residential Building Renovations
Struhala, Karel ; Ostrý, Milan (referee) ; Lupíšek,, Antonín (referee) ; Košíčková, Ivana (advisor)
One of the methods utilized for quantification of environmental impacts of human activities is Life-Cycle Assessment (LCA). This dissertation applies the method on renovations of residential buildings in the Czech Republic. The reason is high potential for environmental savings in existing building stock and lack of such works in the Czech conditions. Therefore the dissertation deals with LCA of building renovations to increase the knowledge in this field. Moreover it also questions and evaluates accuracy of building LCA in general to increase understanding of differences and inaccuracies that are often admitted, but seldom analysed in literature. The dissertation includes five LCAs of two case studies: a block-of-flats in Brno and a terraced house in a nearby village. First case study includes LCAs of the original state and renovation of the block-of-flats. The second case study describes LCAs of the original state, partial reconstruction or demolition and new construction of the terraced house. The LCAs are performed in two software tools: Eco-Bat 4.0 and GaBi 4. Detailed models of the evaluated buildings are based on available designs. Environmental impacts are calculated in four impact categories predefined in Eco-Bat 4.0 to enable comparison of results: Ecological Scarcity, Cumulative Energy Demand (or Primary Energy in GaBi 4), Non-Renewable Energy and Global Warming Potential. The accuracy of the performed LCAs is tested in up to 324 different scenario combinations considering variable service life of building materials, construction waste quantities, waste management and transport distances. Generally, the results confirm environmental efficiency of building renovations. The renovation of block-of-flats results in 17.39% average reduction of total environmental impacts. Demolition and new construction of the terraced house result in 76.83% average savings. However, the variation of results is rather high due to tested scenario combinations: up to 56.06%.
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Assessment of natural and recycled materials in buildings
Stránská, Zuzana ; Ostrý, Milan (referee) ; Lupíšek,, Antonín (referee) ; Sedlák, Jiří (advisor)
Life-Cycle Assessment (LCA) is an analytic method for evaluation of environmental impacts of products, services and technologies. It is associated with all the stages of a product's life. The environmental impacts are evaluated on the basis of material and energetic flows, which are in influence with the environment. These impacts are always determined in the relation with the function of the product or the service and so it is possible to compare them with the other alternatives. One of the most important reasons why I have chosen this dissertation thesis subject was the growing public interest in impacts of the building constructions on the environment and human organism. Only a few experts and scientific research centres deal with the problem of environmental impacts of the buildings in the Czech Republic so the main goal of this thesis is to help with a spreading a knowledge about it. There are four main problems to solve in the thesis: determination of environmental impacts of selected materials which are missing in available databases, creation of life cycle models of evaluated buildings, determining the most appropriate functional unit and determining the contents of the recommended LCA protocol for building analysis. In the first phase of the thesis there was built a detailed life cycle model of the reference building on the basis of available documents and databases. This "cradle to cradle" LCA model was then optimized for a large number of life cycle scenarios to determine the significance of the impact of individual variables on the overall environmental impact of the building. The knowledge gained from this analysis was applied to the lifecycle models of other buildings and then there was assembled the recommended form of the LCA protocol. In the final stage, the results of the environmental impacts were quantified on the different functional units which were used for determining the appropriate form.
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Systémový přístup ke snižování zatížení životního prostředí v souvislosti s výstavbou a provozem budov‚ s důrazem na stavebně-energetické souvislosti
EkoWATT, Praha ; Knápek, Jaroslav ; Kabele, Karel ; Stuchlíková, Lucie ; Šašková, Dana ; Urbánková, Veronika ; Kalčev, Petr ; Staněk, Kamil ; Šafařík, Miroslav ; Truxa, Jan ; Srdečný, Karel ; Beranovský, Jiří ; Tywoniak, Jan ; Lupíšek, Antonín ; Hudcová, Lenka ; Macholda, František
Dokumentace k rodinným domům z hlediska enegetické náročnosti.
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Systémový přístup ke snižování zatížení životního prostředí v souvislosti s výstavbou a provozem budov‚ s důrazem na stavebně-energetické souvislosti
EkoWATT, Praha ; Knápek, Jaroslav ; Kabele, Karel ; Stuchlíková, Lucie ; Šašková, Dana ; Urbánková, Veronika ; Kalčev, Petr ; Staněk, Kamil ; Šafařík, Miroslav ; Truxa, Jan ; Srdečný, Karel ; Beranovský, Jiří ; Tywoniak, Jan ; Lupíšek, Antonín ; Hudcová, Lenka ; Macholda, František
Studie se zabývá energetickou a environmentální náročností staveb a možnostmi, jak ji ekonomicky efektivně snížit. Byly shromážděny a analyzovány údaje ze tří zdrojů: z průzkumu na stavebních úřadech, ze vzorku energetických auditů a z většího množství projektů reálných budov. byly vytvořeny modely budov, které hodnotí budovy jako celek. Do modelu byly zahrnuty potřeby energií na vytápění, ohřev vody a provoz elektrospotřebičů, odpovídající provozní náklady, potřebné reinvestice v průběhu sledované životnosti objektu a environmentální důsledky jeho provozu. Závěrečná zpráva podává celkový pohled na možnosti ovlivnění obvyklého způsobu navrhování staveb z hlediska všech účastníků tohoto procesu, a to v rámci technických, ekonomických a organizačních možností účastníků.
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