Performance of UK Dwellings in Projected Future Climates

Weng, Kui

doi:10.1016/j.egypro.2017.03.864

Cited by 7 publications

(4 citation statements)

References 16 publications

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“…Similarly, Weng [24] found a large increase in overheating, modelling a semi-detached house over the 21st century using PROMETHEUS weather files, and a similar large increase with more northern sites in the order London > Birmingham > Manchester > Edinburgh > Belfast, consistent with the present study. Modelling older house types in smaller English cities, Gupta and Gregg [39] found most overheating in Oxford (south Midlands), followed by Bristol (SW) and much less in Stockport (NW), with large increases over the century; they also note the importance of shading amongst other measures to reduce this.…”

Section: Discussionsupporting

confidence: 90%

Effects of Future Climate Change and Adaptation Measures on Summer Comfort of Modern Homes across the Regions of the UK

Wright

Venskunas

2022

Energies

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The global climate is warming rapidly, with increasing frequency of severe events including heatwaves. Building insulation standards are improving to reduce emissions, but this can also lead to more overheating. Historically, UK house designers have not included adaptation measures to limit this. Most studies of the problem have had limited geographical or future climate scope. This study considers the comfort performance of a small modern house, in detached, semi-detached, and terrace (row) forms, but otherwise identical. Overheating is evaluated according to established criteria, including night-time bedroom hours over 26 °C. Simulations are carried out using median future weather years for current, 2030s, 2050s, and 2080s climates under medium- and high-emission scenarios for 14 regions of the UK. The results show a very large increase in overheating by the 2080s in all regions. With solar shading and natural ventilation, overheating is reduced considerably, maintaining comfort in most northern regions in the 2050s and a few northern regions in the 2080s. Differences between medium and high emissions are generally less than between different decades. Terraced (row) houses consistently overheat slightly more than semi-detached, with detached showing the least overheating.

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Section: Discussionsupporting

confidence: 90%

Effects of Future Climate Change and Adaptation Measures on Summer Comfort of Modern Homes across the Regions of the UK

Wright

Venskunas

2022

Energies

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“…This means more adaptation measures are needed in the south UK before the 2050s to maintain or improve thermal comfort. Weng, 106 in a follow-up study to Shikder, Mourshed and Price, 105 concluded that nighttime ventilation would be more effective than daytime ventilation in the 2080s. However, depending on the location, using natural ventilation may compromise security.…”

Section: Passive Cooling Strategiesmentioning

confidence: 99%

Domestic overheating risks and mitigation strategies: The state-of-the-art and directions for future research

Alrasheed

Mourshed

2023

Indoor and Built Environment

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Anthropogenic climate change will likely put dwellings at risk of overheating and potentially increase cooling demand in the decades ahead, leading to higher greenhouse gas (GHG) emissions due to the energy consumed for mechanical cooling. Contemporary constructions with highly insulated fabric have been found to suffer from periodic overheating in today’s climate, the occurrence of which is projected to increase in frequency as the temperature rises. This critical review investigates the factors affecting overheating risks in dwellings and passive cooling strategies to mitigate overheating impacts on occupant thermal comfort and wellbeing. The cooling efficiency of passive strategies is affected by the design, construction and operation of buildings, as well as climate and occupancy. A framework has been developed to illustrate the effect of overheating factors on the cooling efficacy of passive strategies. Findings suggest that a combination of passive strategies is required to minimise overheating risks by the 2080s. External solar shading is the most effective method for retrofitting insulated dwellings. On the other hand, cool paint is ideal for uninsulated dwellings. In addition, thermal mass and natural ventilation require occupant interaction for optimal air circulation and cooling performance.

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“…The efficiency of ventilative cooling increases with the difference between the outside and the inside temperature, outside being lower. Night time is therefore ideal for this type of ventilation, and is recommended in the literature (Heracleous & Michael, 2018;Weng, 2017).…”

Section: Introductionmentioning

confidence: 99%

On the effectiveness of passive controls for summer thermal comfort in highly insulated dwellings

Dartevelle

Moeseke

Masy

et al. 2023

Building Research & Information

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Among environmental controls, solar shading and ventilative cooling are widely considered as key passive strategies for limiting the overheating risks in buildings. While their application is encouraged through Energy Performance of Buildings Directive regulations, several studies have shown that summer thermal comfort in heating-dominate temperate climates still requires deeper investigation, particularly in low-energy residential buildings. Based on qualitative and quantitative data collected through surveys and monitoring in 147 highly insulated houses in Wallonia (Belgium), this paper gives an overview of the implemented passive strategies and discusses their effectiveness. Statistical tests are conducted to evaluate their impact on both perceived and measured indoor conditions. In general, the results highlight a limited impact of the implemented strategies, questioning their proper operation. Operational modes for environmental controls thus appear crucial, and should better respond to occupants' needs, preferences and control opportunities. At a more general level, the study calls for a better understanding of the barriers inhibiting successful integration and operation of environmental controls, in order to effectively reduce overheating risks in residential buildings and limit future diffusion of active cooling systems with their induced environmental impacts.

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Performance of UK Dwellings in Projected Future Climates

Cited by 7 publications

References 16 publications

Effects of Future Climate Change and Adaptation Measures on Summer Comfort of Modern Homes across the Regions of the UK

Effects of Future Climate Change and Adaptation Measures on Summer Comfort of Modern Homes across the Regions of the UK

Domestic overheating risks and mitigation strategies: The state-of-the-art and directions for future research

On the effectiveness of passive controls for summer thermal comfort in highly insulated dwellings

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