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Impact of the envelope geometry on cooling demand in very airtight UK dwellings under current and future weather projections

Lavafpour, Yahya; Sharples, Steve

Authors

Steve Sharples



Abstract

© 2014 The Author. The Passivhaus strategy employs super insulation to reduce the heat transfer through the building envelope. It has been argued that super insulated homes are vulnerable to summer overheating risks, even in the current climate. The UK is expected to experience hotter and more extreme summers in the coming decades and the risk of buildings overheating may become very significant in future climate scenarios. The Passivhaus approach can use much of the solar energy from its relatively large glazing in south facade but this large glazing may eventually lead to overheating in summer time. The study used parametric design modelling to generate differently inclined facade geometries for south elevations. Each elevation was then simulated by means of dynamic building simulation software in order to examine to what extend inclined wall mitigate summer overheating risk for Passivhaus dwellings in the UK under alternative future weather projections.

Journal Article Type Conference Paper
Publication Date Jan 1, 2014
Journal Energy Procedia
Print ISSN 1876-6102
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 62
Pages 421-430
APA6 Citation Lavafpour, Y., & Sharples, S. (2014). Impact of the envelope geometry on cooling demand in very airtight UK dwellings under current and future weather projections. Energy Procedia, 62, 421-430. https://doi.org/10.1016/j.egypro.2014.12.404
DOI https://doi.org/10.1016/j.egypro.2014.12.404
Keywords passivhaus, overheating, inclined south-facade
Publisher URL http://dx.doi.org/10.1016/j.egypro.2014.12.404
Additional Information Title of Conference or Conference Proceedings : International Conference on Sustainability in Energy and Buildings

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