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Thermal performance of residential and non-residential sectors: describing differences and understanding underlying reasons

Published inJournal of physics. Conference series, vol. 2600, no. 2, 022003
Publication date2023-11-01
Abstract

This paper presents a comparative analysis of thermal performance and heating demand for selected residential (single-family houses, SFHs and multi-family houses, MFHs) and non-residential sectors (Offices and Schools). The thermal performance and space heating demand of the Swiss building stock were analysed by a bottom-up element-based archetypal model. SFHs are characterised by the best envelope thermal performance (average envelope U-value = 0.62 W/(m 2 K)), followed by MFH (0.73 W/(m 2 K)), Schools (0.75 W/(m 2 K)), and Offices (0.84 W/(m 2 K). Results show significant differences regarding architectural features between building sectors: SFHs are characterised by the highest envelope factor (median value = 2.00), defined as the ratio between external surfaces and heated area, followed by Schools (1.50), MFH (1.30), and Offices (1.25). As a consequence of the above-mentioned differences, SFHs show higher specific final energy demand for space heating (on average 148 kWh/(m 2 year)), followed by Schools (117 kWh/(m 2 year)), Offices (100 kWh/(m 2 year)), and MFH (93 kWh/(m 2 year)). Moreover, a high potential for decarbonisation of heating systems in the Swiss building stock was identified: more than 70% of the ERA is heated by fossil fuel-based heating systems, with some differences amongst the studied sectors. This analysis serves as an important starting point to examine possible retrofit pathways and policies across sectors.

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SASSO, Francesco, PATEL, Martin Kumar. Thermal performance of residential and non-residential sectors: describing differences and understanding underlying reasons. In: Journal of physics. Conference series, 2023, vol. 2600, n° 2, p. 022003. doi: 10.1088/1742-6596/2600/2/022003
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ISSN of the journal1742-6588
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