Energy-Saving Retrofits of Prefabricated House Roof in Severe Cold Area
The poor thermal performance of prefabricated house roof in severe cold area results in the increase of heating energy consumption and uncomfortable indoor thermal environment. Roof energy-saving retrofits are necessary, and the specific retrofit measures are investigated from the perspective of energy saving and economy. Using EnergyPlus software, the energy consumption of a typical prefabricated house with flat, slope and capping roof with insulation ceiling in severe cold area is simulated. The life cycle cost of these retrofit cases is estimated. The three-level comparisons between flat roof and slope roof, capping roofs at different angles and thermal insulation ceiling are quantitatively analyzed. The results show that the capping roof is the most energy-saving, the flat roof is the second, and the sloping roof is the worst. The capping roof 10° double slope + 200 mm rock wool ceiling insulation is the optimal retrofit scheme, and the energy saving rate reaches 19.38%. It significantly reduces heating energy consumption, operating costs, carbon emission, and improves the indoor temperature during heating period and stabilizes the indoor temperature fluctuation. The roof retrofit measures of prefabricated houses have full energy-saving potential and practicability
Year of publication: |
[2022]
|
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Authors: | Jiang, Wei ; Zhang, Kuan ; Ma, Lingyong ; Liu, Bo ; Li, Qing ; Li, Dong |
Publisher: |
[S.l.] : SSRN |
Subject: | Energieeinsparung | Energy conservation | Konsumentenverhalten | Consumer behaviour | Energiesparendes Bauen | Energy efficient building |
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