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Sustainability 2017, 9(7), 1097; doi:10.3390/su9071097

Energy Efficiency for Airtightness and Exterior Wall Insulation of Passive Houses in Hot Summer and Cold Winter Zone of China

College of Civil Engineering and Architecture, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
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Received: 26 May 2017 / Revised: 19 June 2017 / Accepted: 19 June 2017 / Published: 23 June 2017
(This article belongs to the Section Sustainable Engineering and Science)

Abstract

There exists huge differences in climatic conditions and occupant energy-consuming behavior between Berlin and the “hot summer and cold winter zone of China” (HSCW), which implies that the building energy consumption compositions of two regions are completely different. In this paper, dynamic energy consumption simulation for passive houses with Design Builder software was performed. The results indicated that the improvement of building airtightness and exterior wall insulation can reduce annual heating and cooling load effectively, and more importantly the effect is much stronger on heating load than cooling load. Because of this, the paper proposed that the ratio of heating and cooling electricity consumption (r) should be adopted as an important index in energy efficiency evaluation of passive houses. It would contribute to the reasonable selection of ventilation modes and the exterior wall heat transfer coefficient, and benefit the healthy development of passive houses in HSCW. View Full-Text
Keywords: hot summer and cold winter zone; passive house; energy simulation; airtightness; exterior wall insulation; the ratio of heating and cooling electricity consumption hot summer and cold winter zone; passive house; energy simulation; airtightness; exterior wall insulation; the ratio of heating and cooling electricity consumption
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fu, X.; Qian, X.; Wang, L. Energy Efficiency for Airtightness and Exterior Wall Insulation of Passive Houses in Hot Summer and Cold Winter Zone of China. Sustainability 2017, 9, 1097.

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