Optimization of thermal insulation thickness pertaining to embodied and operational GHG emissions in cold climates – Future and present cases
Determining the optimal insulation thickness is useful for designing zero-emission buildings (ZEB) to minimize the environmental impacts. The energy required to heat buildings in cold climates is relatively high. Substantial reductions in the total energy usage of a building can be achieved by reduc...
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Online Access: | https://hdl.handle.net/11250/3059396 https://doi.org/10.1016/j.buildenv.2023.110187 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/3059396 2023-05-15T16:29:35+02:00 Optimization of thermal insulation thickness pertaining to embodied and operational GHG emissions in cold climates – Future and present cases Gaarder, Jørn Emil Friis, Naja Kastrup Larsen, Ingrid Sølverud Time, Berit Møller, Eva B. Kvande, Tore 2023 application/pdf https://hdl.handle.net/11250/3059396 https://doi.org/10.1016/j.buildenv.2023.110187 eng eng Elsevier Norges forskningsråd: 237859 urn:issn:0360-1323 https://hdl.handle.net/11250/3059396 https://doi.org/10.1016/j.buildenv.2023.110187 cristin:2135403 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no 234 Building and Environment Peer reviewed Journal article 2023 ftntnutrondheimi https://doi.org/10.1016/j.buildenv.2023.110187 2023-03-22T23:44:06Z Determining the optimal insulation thickness is useful for designing zero-emission buildings (ZEB) to minimize the environmental impacts. The energy required to heat buildings in cold climates is relatively high. Substantial reductions in the total energy usage of a building can be achieved by reducing the U-value of the external surfaces. Increasing the insulation thickness reduces the operational CO2 emissions, although simultaneously increases the embodied CO2 emissions from materials. To mitigate climate change, Norway and Denmark are trending towards stricter regulations to limit energy use in buildings. However, these countries have no current regulations in the building codes for limit embodied CO2 emissions from materials. This study analyzes the influence of the energy emission factor and future climate change (scenarios?) on the optimal insulation thickness. We used three independent models for case studies in Greenland and Norway. The differences between the case studies highlight the influence of model parameter choices, such as indoor climate, energy emission factor and material emissions, whereas the similarities may be used to analyze the problem from a broader perspective. The results show that optimal insulation thickness calculations are most valuable for case studies in which the energy emission factor is low. Considering energy emission factors above 25–30 g CO2eq/kWh, operational emissions dominated the calculation results in all case studies. publishedVersion Article in Journal/Newspaper Greenland NTNU Open Archive (Norwegian University of Science and Technology) Greenland Norway Building and Environment 234 110187 |
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Open Polar |
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NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
Determining the optimal insulation thickness is useful for designing zero-emission buildings (ZEB) to minimize the environmental impacts. The energy required to heat buildings in cold climates is relatively high. Substantial reductions in the total energy usage of a building can be achieved by reducing the U-value of the external surfaces. Increasing the insulation thickness reduces the operational CO2 emissions, although simultaneously increases the embodied CO2 emissions from materials. To mitigate climate change, Norway and Denmark are trending towards stricter regulations to limit energy use in buildings. However, these countries have no current regulations in the building codes for limit embodied CO2 emissions from materials. This study analyzes the influence of the energy emission factor and future climate change (scenarios?) on the optimal insulation thickness. We used three independent models for case studies in Greenland and Norway. The differences between the case studies highlight the influence of model parameter choices, such as indoor climate, energy emission factor and material emissions, whereas the similarities may be used to analyze the problem from a broader perspective. The results show that optimal insulation thickness calculations are most valuable for case studies in which the energy emission factor is low. Considering energy emission factors above 25–30 g CO2eq/kWh, operational emissions dominated the calculation results in all case studies. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Gaarder, Jørn Emil Friis, Naja Kastrup Larsen, Ingrid Sølverud Time, Berit Møller, Eva B. Kvande, Tore |
spellingShingle |
Gaarder, Jørn Emil Friis, Naja Kastrup Larsen, Ingrid Sølverud Time, Berit Møller, Eva B. Kvande, Tore Optimization of thermal insulation thickness pertaining to embodied and operational GHG emissions in cold climates – Future and present cases |
author_facet |
Gaarder, Jørn Emil Friis, Naja Kastrup Larsen, Ingrid Sølverud Time, Berit Møller, Eva B. Kvande, Tore |
author_sort |
Gaarder, Jørn Emil |
title |
Optimization of thermal insulation thickness pertaining to embodied and operational GHG emissions in cold climates – Future and present cases |
title_short |
Optimization of thermal insulation thickness pertaining to embodied and operational GHG emissions in cold climates – Future and present cases |
title_full |
Optimization of thermal insulation thickness pertaining to embodied and operational GHG emissions in cold climates – Future and present cases |
title_fullStr |
Optimization of thermal insulation thickness pertaining to embodied and operational GHG emissions in cold climates – Future and present cases |
title_full_unstemmed |
Optimization of thermal insulation thickness pertaining to embodied and operational GHG emissions in cold climates – Future and present cases |
title_sort |
optimization of thermal insulation thickness pertaining to embodied and operational ghg emissions in cold climates – future and present cases |
publisher |
Elsevier |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3059396 https://doi.org/10.1016/j.buildenv.2023.110187 |
geographic |
Greenland Norway |
geographic_facet |
Greenland Norway |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
234 Building and Environment |
op_relation |
Norges forskningsråd: 237859 urn:issn:0360-1323 https://hdl.handle.net/11250/3059396 https://doi.org/10.1016/j.buildenv.2023.110187 cristin:2135403 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_doi |
https://doi.org/10.1016/j.buildenv.2023.110187 |
container_title |
Building and Environment |
container_volume |
234 |
container_start_page |
110187 |
_version_ |
1766019289944424448 |