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National survey of summertime temperatures and overheating risk in English homes
Abstract This paper presents one of the first national scale studies of summertime temperatures in English dwellings. Living room and bedroom temperatures were recorded in 207 homes across the England during the cool summer of 2007. Data was also collected by face-to-face household interviews. Fourteen homes (7%) were observed to be heated for part or all of the analysis period (July to August). Based on the BSEN15251 adaptive thermal comfort model, the 193 free-running dwellings would, in general, to be considered as uncomfortably cool. Over 72% of living rooms and bedrooms had more than 5% of hours below the BSEN15251 Cat II lower threshold, with over 50% having more than 5% of hours below the Cat III threshold. Detached homes and those built before 1919 were significantly cooler (p < 0.05) than those of other type and age. Static criteria revealed that, despite the cool summer, 21% of the bedrooms had more than 5% of night time hours over 26 °C; which is a recommended upper limit for bedrooms. The bedrooms of modern homes, i.e. those built after 1990 or with cavity walls, were significantly warmer (p < 0.05). The bedrooms in homes built prior to 1919 were significantly cooler (p < 0.05). The living rooms of flats were significantly warmer than the living rooms in the other dwelling types (p < 0.05). The incidence of warm bedrooms in modern homes, even during a cool summer, is of concern, especially as there is a strong trend towards even better insulation standards in new homes and the energy-efficient retrofitting of existing homes.
Highlights Living room and bedroom temperatures inside 207 English homes were measured. During the summer of 2007, 7% of the homes were heated, 93% were free running. Based on BSEN15251, the free-running homes were, in general, uncomfortably cool. Detached homes and dwellings built before 1919 were significantly cooler. Flats and houses built after 1990 were significantly warmer.
National survey of summertime temperatures and overheating risk in English homes
Abstract This paper presents one of the first national scale studies of summertime temperatures in English dwellings. Living room and bedroom temperatures were recorded in 207 homes across the England during the cool summer of 2007. Data was also collected by face-to-face household interviews. Fourteen homes (7%) were observed to be heated for part or all of the analysis period (July to August). Based on the BSEN15251 adaptive thermal comfort model, the 193 free-running dwellings would, in general, to be considered as uncomfortably cool. Over 72% of living rooms and bedrooms had more than 5% of hours below the BSEN15251 Cat II lower threshold, with over 50% having more than 5% of hours below the Cat III threshold. Detached homes and those built before 1919 were significantly cooler (p < 0.05) than those of other type and age. Static criteria revealed that, despite the cool summer, 21% of the bedrooms had more than 5% of night time hours over 26 °C; which is a recommended upper limit for bedrooms. The bedrooms of modern homes, i.e. those built after 1990 or with cavity walls, were significantly warmer (p < 0.05). The bedrooms in homes built prior to 1919 were significantly cooler (p < 0.05). The living rooms of flats were significantly warmer than the living rooms in the other dwelling types (p < 0.05). The incidence of warm bedrooms in modern homes, even during a cool summer, is of concern, especially as there is a strong trend towards even better insulation standards in new homes and the energy-efficient retrofitting of existing homes.
Highlights Living room and bedroom temperatures inside 207 English homes were measured. During the summer of 2007, 7% of the homes were heated, 93% were free running. Based on BSEN15251, the free-running homes were, in general, uncomfortably cool. Detached homes and dwellings built before 1919 were significantly cooler. Flats and houses built after 1990 were significantly warmer.
National survey of summertime temperatures and overheating risk in English homes
Beizaee, A. (author) / Lomas, K.J. (author) / Firth, S.K. (author)
Building and Environment ; 65 ; 1-17
2013-03-18
17 pages
Article (Journal)
Electronic Resource
English
Summer temperature , Thermal comfort , Overheating , English homes , Socio-technical characteristics , ASHRAE , American Society of Heating, Refrigeration and Air-Conditioning , BADC , British Atmospheric Data Centre , CaRB , Carbon Reduction in Buildings , CI , confidence interval , CIBSE , Chartered Institution of Building Services Engineers , DTM , dynamic thermal modelling , GOR , Government Office Region , NatCen , National Centre for Social Research
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