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Monitoring and modelling the risk of summertime overheating and passive solutions to avoid active cooling in London care homes
Energy and Buildings ( IF 6.6 ) Pub Date : 2021-08-30 , DOI: 10.1016/j.enbuild.2021.111418
Rajat Gupta 1 , Alastair Howard 1 , Mike Davies 2 , Anna Mavrogianni 2 , Ioanna Tsoulou 2 , Nishesh Jain 2 , Eleni Oikonomou 2 , Paul Wilkinson 3
Affiliation  

Summertime overheating in care settings has been identified as a key risk and research priority for the health and social care system. This paper examines the current and future risk of summertime overheating in two London-based care homes occupying modern and older buildings. Continuous monitoring of outdoor and indoor temperature in bedrooms, communal areas and offices in summer 2019 helped to establish the prevalence and intensity of overheating. Dynamic thermal simulation (EnergyPlusV8.9) of the two care settings assessed the potential for avoiding active cooling in future climate using passive solutions. In both care settings, indoor temperatures were observed to exceed 30 °C during daytime hours, significantly higher than the recommended 26 °C threshold of Public Health England. Although severity of overheating was lower in the older building, overheating was found to be prevalent and prolonged across both care settings with bedroom temperatures higher than lounges especially at night. Thermal simulation analysis showed that, with regards to temperature reduction and cooling load, nighttime ventilation was the single most effective passive solution for both buildings for the current climate, while a combination of night ventilation, external shading and high-albedo external walls was the most effective package solution. By the 2080s, air-conditioning was the most effective solution for reducing temperature, but also had the highest cooling load, highlighting the importance of balancing passive with active measures to improve thermal comfort and reduce cooling loads.



中文翻译:

监测和模拟夏季过热的风险和被动解决方案,以避免伦敦养老院的主动降温

护理环境中的夏季过热已被确定为健康和社会护理系统的主要风险和研究重点。本文研究了位于伦敦的两座位于现代和旧建筑中的养老院夏季过热的当前和未来风险。2019 年夏季持续监测卧室、公共区域和办公室的室外和室内温度,有助于确定过热的流行程度和强度。两种护理环境的动态热模拟 (EnergyPlusV8.9) 评估了使用被动解决方案在未来气候中避免主动冷却的潜力。在这两种护理环境中,白天的室内温度都超过 30 °C,明显高于英格兰公共卫生建议的 26 °C 阈值。尽管老建筑的过热严重程度较低,但发现过热现象在两个护理环境中普遍存在且持续时间较长,尤其是在夜间,卧室温度高于休息室。热模拟分析表明,在降温和冷负荷方面,夜间通风是当前气候下两座建筑最有效的被动解决方案,而夜间通风、外遮阳和高反照率外墙的组合是最有效的。有效的包装解决方案。到 2080 年代,空调是降低温度的最有效解决方案,但同时也具有最高的冷负荷,突出了平衡被动与主动措施以提高热舒适度和减少冷负荷的重要性。在卧室温度高于休息室的两种护理环境中,过热现象普遍存在且持续时间较长,尤其是在夜间。热模拟分析表明,在降温和冷负荷方面,夜间通风是当前气候下两座建筑最有效的被动解决方案,而夜间通风、外遮阳和高反照率外墙的组合是最有效的。有效的包装解决方案。到 2080 年代,空调是降低温度的最有效解决方案,但同时也具有最高的冷负荷,突出了平衡被动与主动措施以提高热舒适度和减少冷负荷的重要性。在卧室温度高于休息室的两种护理环境中,过热现象普遍存在且持续时间较长,尤其是在夜间。热模拟分析表明,在降温和冷负荷方面,夜间通风是当前气候下两座建筑最有效的被动解决方案,而夜间通风、外遮阳和高反照率外墙的组合是最有效的。有效的包装解决方案。到 2080 年代,空调是降低温度的最有效解决方案,但同时也具有最高的冷负荷,突出了平衡被动与主动措施以提高热舒适度和减少冷负荷的重要性。热模拟分析表明,在降温和冷负荷方面,夜间通风是当前气候下两座建筑最有效的被动解决方案,而夜间通风、外遮阳和高反照率外墙的组合是最有效的。有效的包装解决方案。到 2080 年代,空调是降低温度的最有效解决方案,但同时也具有最高的冷负荷,突出了平衡被动与主动措施以提高热舒适度和减少冷负荷的重要性。热模拟分析表明,在降温和冷负荷方面,夜间通风是当前气候下两座建筑最有效的被动解决方案,而夜间通风、外遮阳和高反照率外墙的组合是最有效的。有效的包装解决方案。到 2080 年代,空调是降低温度的最有效解决方案,但同时也具有最高的冷负荷,突出了平衡被动与主动措施以提高热舒适度和减少冷负荷的重要性。外部遮阳和高反照率外墙是最有效的包装解决方案。到 2080 年代,空调是降低温度的最有效解决方案,但同时也具有最高的冷负荷,突出了平衡被动与主动措施以提高热舒适度和减少冷负荷的重要性。外部遮阳和高反照率外墙是最有效的包装解决方案。到 2080 年代,空调是降低温度的最有效解决方案,但同时也具有最高的冷负荷,突出了平衡被动与主动措施以提高热舒适度和减少冷负荷的重要性。

更新日期:2021-09-20
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