Examining the magnitude and perception of summertime overheating in London care homes
Examining the magnitude and perception of summertime overheating in London care homes
复制标题
DOI：
10.1177/01436244211013645
复制
发表时间：
2021-05
影响因子：
1.7
通讯作者：
Rajat Gupta;Alastair Howard;M. Davies;A. Mavrogianni;I. Tsoulou;E. Oikonomou;P. Wilkinson
中科院分区：
文献类型：
--
作者：
Rajat Gupta;Alastair Howard;M. Davies;A. Mavrogianni;I. Tsoulou;E. Oikonomou;P. Wilkinson
本文汇集了客观和主观的室内温度和热舒适性的数据，以研究夏季过热的幅度和感知在两个伦敦的护理院占用现代和旧建筑。沿着2019年夏季对室内和室外温度、相对湿度和二氧化碳水平进行了持续监测，并对老年居民和护理机构的工作人员进行了热舒适度调查和半结构化访谈。发现室内温度高（>30°C），在两种护理环境中，卧室温度在夜间通常高于白天。由于窗户限制器限制了夜间通风，因此打开受限。过热现象普遍，五间受监测的卧室中有四间未能达到所有四个过热指标。虽然35-42%的工作人员认为室内温度高得令人不舒服，但只有13-19%的居民认为室内温度高得令人不舒服，这表明老年居民往往对热量相对不敏感，使他们在没有意识到的情况下容易过热。现代护理环境中的居民和工作人员对他们的热条件不太满意。作为混合建筑，护理环境需要通过夜间通风、供暖管理和支持性机构做法，在炎热的天气中保持居民和工作人员的舒适和健康。实际应用：养老院的设计重点是让居民在冬天保持温暖，忽视了夏季过热的风险。养老院是混合建筑，为弱势老年居民提供生活空间，为工作人员提供办公室/休息室。在炎热的天气期间为这两个群体提供舒适是具有挑战性的。通风的机会受到健康和安全法规的限制，这些法规要求窗户最大打开10厘米，并且机构惯例导致窗户经常保持关闭，特别是在晚上。利用自然通风，并在可能的情况下，应考虑沿着与外部遮阳。加热应管理，以避免不必要的热量增益在夏季。
This paper brings together objective and subjective data on indoor temperature and thermal comfort to examine the magnitude and perception of summertime overheating in two London-based care homes occupying modern and older buildings. Continuous monitoring of indoor and outdoor temperature, relative humidity and CO2 levels was conducted in summer 2019 along with thermal comfort surveys and semi-structured interviews with older residents and staff of the care settings. Indoor temperatures were found to be high (>30°C) with bedroom temperatures often higher at night than daytime across both care settings. Limited opening due to window restrictors constrained night-time ventilation. Overheating was prevalent with four out of the five monitored bedrooms failing all four overheating metrics investigated. While 35–42% of staff responses perceived indoor temperatures to be uncomfortably hot, only 13–19% of resident responses were found to do so, indicating that elderly residents tend to be relatively insensitive to heat, leaving them open to overheating without realising it. Residents and staff in the modern care setting were less satisfied with their thermal conditions. As hybrid buildings, care settings need to keep both residents and staff comfortable and healthy during hot weather through night-time ventilation, management of heating and supportive institutional practices. Practical application: Care home designs have focused on keeping residents warm through the winter, neglecting the risks of summertime overheating. Care homes are hybrid buildings serving as living spaces for vulnerable older residents and offices/workspaces for staff. Providing comfort to both groups during periods of hot weather is challenging. Opportunities for ventilation are limited by Health & Safety regulations that mandate up to 10 cm maximum window openings and institutional practices that result in windows routinely kept closed, particularly at night. Utilising natural and where possible cross-ventilation should be considered along with external shading. Heating should be managed to avoid unwanted heat gains in the summer.