Outdoor thermal comfort in an urban park during winter in cold regions of China
Outdoor thermal comfort in an urban park during winter in cold regions of China
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中国寒冷地区冬季城市公园室外热舒适度
DOI：
10.1016/j.scs.2018.08.034
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发表时间：
2018-11
影响因子：
11.7
通讯作者：
Yan Shanshan
中科院分区：
文献类型：
--
作者：
Xu Min;Hong Bo;Mi Jiayi;Yan Shanshan
城市公园在改善城市小气候、减少城市热岛效应方面发挥着重要作用。中国，采用小气候监测和热舒适问卷调查相结合的方法，对西安市不同城市公园景观冬季的热舒适性进行了调查。结果表明：1)人体舒适性与人体热感觉密切相关；2)冬季，总辐射对人体舒适度的影响最大，其次是空气温度和相对湿度，风速是最不重要的影响因素；3)景观类型和景观成分对室外热环境和人体热舒适性有显著影响；4)冬季居民希望太阳辐射强烈，气温较高，但对风速和相对湿度不敏感；5)心理因素对人体热感觉影响较大；6)通用热气候指数(UTCI)是最适合评价西安室外人体热舒适性的指标。中性生理当量温度范围为13.3~23.6℃，中性生理当量温度范围为14.9~23.2℃。这些研究成果可为城市公园设计在考虑可持续城市建设时提供理论依据和技术参考。
Urban parks play significant roles in improving urban microclimate and reducing urban heat islands. Using microclimatic monitoring and a questionnaire survey of thermal comfort, this study investigated thermal comfort during winter in different urban park landscapes in Xi’an, China. Results indicated that: 1) Human comfort was strongly related to their thermal sensation; 2) In winter, global radiation was the most important factor affecting human comfort, followed by air temperature and relative humidity, and wind speed was the least important factor; 3) Landscape type and components had significant impacts on the outdoor thermal environment and human thermal comfort; 4) Residents desired intense solar radiation and higher air temperature in winter, but were not sensitive to wind speed or relative humidity; 5) Psychological factors had particular effects on human thermal sensation, and 6) Universal Thermal Climate Index (UTCI) was the most suitable index to evaluate outdoor human thermal comfort in Xi’an. The neutral Physiological Equivalent Temperature (PET) and the neutral UTCI ranged within 13.3–23.6℃ and 14.9–23.2℃, respectively. These results could serve as theoretical baselines and technical references for urban park design when considering the construction of sustainable cities.
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