Assessing overheating risk and thermal comfort in state-of-the-art prototype houses that combat exacerbated climate change in UK

Article


Ozarisoy, B. and Elsharkawy, H. 2019. Assessing overheating risk and thermal comfort in state-of-the-art prototype houses that combat exacerbated climate change in UK. Energy and Buildings. 187, pp. 201-217. https://doi.org/10.1016/j.enbuild.2019.01.030
AuthorsOzarisoy, B. and Elsharkawy, H.
Abstract

There is growing evidence that terraced houses—thermally lightweight, well insulated, naturally ventilated with three exposed wall surfaces—are at risk of overheating, especially in south-eastern England. The aim of this study is to evaluate the building performance and develop a reliable building simulation, which will be employed in the second phase of the study: developing affordable and feasible passive design strategies to support the energy-efficient building systems of the construction industry. This paper reports on the results from the first phase of the study where a quantitative methodology, including indoor and outdoor environmental monitoring, in-situ measurements and building simulation modelling, was adopted. The performance of a case study was modelled and simulated via employing Integrated Environmental Solutions (IES) software suite.

The results from the base-case were analysed according to the adaptive thermal comfort of Chartered Institution of Building Services Engineers (CIBSE) Technical Memorandum 52 guidelines: The Limits of Thermal Comfort—Avoiding Overheating in European Buildings. The spaces studied within the case study house were observed to exceed the acceptable limits of thermal comfort; particularly, the large bedroom within this zone exceeded the upper limit for overheating up to 11 hours daily. Furthermore, the results from the monitoring study indicate a high risk of summertime overheating across all the case study settings, especially during short-term peaks in outdoor temperatures. The main reasons for the problematic thermal performance were identified as well-insulated and fully air-tight building fabric, the lack of sufficient ventilation through the living spaces and excessive heat gains through the composite cladding material.

JournalEnergy and Buildings
Journal citation187, pp. 201-217
ISSN0378-7788
Year2019
PublisherElsevier
Accepted author manuscript
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Digital Object Identifier (DOI)https://doi.org/10.1016/j.enbuild.2019.01.030
Publication dates
Online25 Jan 2019
Publication process dates
Deposited11 Feb 2019
Accepted15 Jan 2019
Copyright information© 2019 Elsevier
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