Outdoor thermal comfort during winter in China's cold regions: A comparative study
Outdoor thermal comfort during winter in China's cold regions: A comparative study
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我国寒冷地区冬季室外热舒适度比较研究
DOI：
10.1016/j.scitotenv.2020.144464
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发表时间：
2021-01-14
影响因子：
9.8
通讯作者：
Ma, Xiaoyan
中科院分区：
文献类型：
--
作者：
An, Le;Hong, Bo;Ma, Xiaoyan
由于室外热舒适度 (OTC) 标准测量方法的限制，很难在研究和气候区域之间比较热基准和热指数校准。本研究采用统一标准的气象测量和问卷调查的方法，对北京、西安和哈尔尼的城市公园进行了OTC研究；中国寒冷地区城市的代表。采用通用热气候指数（Mt！）作为热舒适指数，比较了这些城市居民热感知和室外热基准的差异。结果表明：1）气温（T-a）和地球温度（T-g）是影响三个城市冬季居民热感觉的两个主要因素。北京和哈密居民的热感觉与风速（V-a）呈负相关。西安和哈密的居民喜欢较高的相对湿度（RH）。北京和哈密的居民倾向于选择较低的V-a，以改善与当地气候特征相关的OTC。 2）西安居民中性UTCI（NUTCI）最高（17.3℃），其次是北京（17.0℃）和哈密（6.4℃）。与北京（8.7-25.4℃）相比，西安居民的中性UTCI范围（NUTCIR）（7.9-26.7℃）稍宽，而哈密居民的NUTCI范围最窄（15-11.3℃）。三天“无热应激”范围为北京6.1～26.0℃、西安6.7～25.5℃、哈密-22～12.2℃。 3) 获得基于 ASHRAE 7 分制的校准热指数，以判断这三个城市的环境热质量。 (C) 2021 Elsevier B.V. 保留所有权利。
Due to limits to standard methods for surveying outdoor thermal comfort (OTC), it is difficult to compare thermal benchmarks and thermal index calibrations among studies and climatic regions. Using uniform standard meteorological measurements and questionnaire surveys, our study conducted an OTC study in urban parks in Beijing, Xi'an and Harni; representative of cities in China's cold regions. The Universal Thermal Climate Index (Mt!) was used as the thermal comfort index, and differences in residents' thermal perceptions and outdoor thermal benchmarks among these cities were compared. Results showed that: 1) air temperature (T-a) and globe temperature (T-g) were two primary factors affecting residents' thermal sensations in the three cities during winter. Residents' thermal sensation in Beijing and Hami was negatively correlated with wind speed (V-a). Residents in Xi'an and Hami preferred a higher relative humidity (RH). Residents in Beijing and Hami preferred a lower V-a to improve OTC related to local climatic characteristics. 2) Xi'an residents had the highest neutral UTCI (NUTCI) (17.3 degrees C), followed by Beijing (17.0 degrees C) and Hami (6.4 degrees C). Xi'an residents had slightly wider neutral UTCI range (NUTCIR) (7.9-26.7 degrees C) compared to Beijing (8.7-25.4 degrees C), while Hami residents had the narrowest NUTCIR (15-11.3 degrees C). The "no thermal stress" range in the three dties was 6.1-26.0 degrees C in Beijing, 6.7-25.5 degrees C in Xi'an, and -22-12.2 degrees C in Hami. 3) Calibrated thermal indices, based on the ASHRAE 7-point scale, were gained to judge the thermal qualities of an environment for all three cities. (C) 2021 Elsevier B.V. All rights reserved.