公共空间热舒适的时间累积效应探究——序列性空间热单元的识别和划分方法

Exploring the Time Accumulation Effect of Thermal Comfort of Public Space-Identification and Division Method of Sequential Spatial Thermal Unit

在微气候和物质形态共同作用下,室外空间中各位置呈现出各异的热环境特性,进而形成一系列具有差异性的热单元;由于使用者经历热单元的时序和停留时间不同,空间整体热舒适体验存在显著差异,进而引出热舒适在时间累积效应中的时序问题。将连续的室外热环境划分为有显著差异的热单元,是深入研究时序问题影响整体热舒适规律的基础。文章以具有典型序列空间特征的某大学校园室外步行空间为研究对象,结合热舒适问卷调研、热环境参数实测和数据分析,以平均辐射温度和风速这两个易测度环境参数的差异值为自变量,以热舒适投票差异值为因变量,建立回归方程,为热单元识别和划分提供可靠和易用的方法。

Under joint action of microclimate and physical form,each position in outdoor space presents different thermal environment characteristics,and a series of thermal units with difference is further formed;since the time sequence and residence time of thermal unit experienced by user are different,there is remarkable difference in overall thermal comfort experience of space,and the problem of time sequence of thermal comfort in time accumulation effect is brought out.Continuous outdoor thermal environment is divided into the thermal unit with remarkable different,which is the basis for in-depth exploration to the regular pattern of overall thermal comfort affected by time sequence problem.This paper takes the outdoor walking space of a university campus with typical sequence space feature as the research example,and combined with questionnaire about thermal comfort,thermal environment parameter measurement and data analysis,the regression equation is established on that basis,where the mean difference values of radiation temperature and wind speed as two environmental parameters that can be easily measured are taken as the independent variables,and the mean difference value of thermal comfort voting is taken as the dependent variable,therefore,a reliable and easily usable method is provided for the identification and division of thermal unit.