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Effect of thermal mass on life cycle primary energy balances of a concrete- and a wood-frame building
Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för teknik, TEK. Mittuniversitetet, Östersund. (SBER)ORCID-id: 0000-0002-5220-3454
Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för teknik, TEK. (SBER)
Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för teknik, TEK. (SBER)
2012 (engelsk)Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 92, s. 462-472Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this study we analyze the effect of thermal mass on space heating energy use and life cycle primary energy balances of a concrete- and a wood-frame building. The analysis includes primary energy use during the production, operation, and end-of-life phases. Based on hour-by-hour dynamic modeling of heat flows in building mass configurations we calculate the energy saving benefits of thermal mass during the operation phase of the buildings. Our results indicate that the energy savings due to thermal mass is small and varies with the climatic location and energy efficiency levels of the buildings. A concrete-frame building has slightly lower space heating demand than a wood-frame alternative, due to the higher thermal mass of concrete-based materials. Still, a wood-frame building has a lower life cycle primary energy balance than a concrete-frame alternative. This is due primarily to the lower production primary energy use and greater bioenergy recovery benefits of the wood-frame buildings. These advantages outweigh the energy saving benefits of thermal mass. We conclude that the influence of thermal mass on space heating energy use for buildings located in Nordic climate is small and that wood-frame buildings with cogeneration based district heating would be an effective means of reducing primary energy use in the built environment.

sted, utgiver, år, opplag, sider
2012. Vol. 92, s. 462-472
Emneord [en]
Buildings; Concrete; Wood; Thermal mass; Dynamic modeling; Life cycle primary energy
HSV kategori
Forskningsprogram
Teknik, Byggteknik
Identifikatorer
URN: urn:nbn:se:lnu:diva-16520DOI: 10.1016/j.apenergy.2011.11.017Scopus ID: 2-s2.0-83455260407OAI: oai:DiVA.org:lnu-16520DiVA, id: diva2:472141
Tilgjengelig fra: 2012-01-03 Laget: 2012-01-03 Sist oppdatert: 2020-05-20bibliografisk kontrollert

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