以热舒适状态下的假人为研究对象,进行了人体典型裸露部位(脸部和头部)与环境换热特性的实验研究,分析了在不同送风温度、风量和气流组织下的对流换热量和辐射换热量的范围及其比值.结果表明:在稳态热舒适状态下,人体脸部和头部对流换热量的变化范围为6～93 W/m2,辐射换热量变化范围为26～60 W/m2,辐射与对流换热量的比值变化范围为0.47～6.65;针对不同气流组织形式,个性化送风以对流换热为主,而混合送风和座椅送风均以辐射换热为主.%Taking the manikin in thermal comfort condition as a study object,develops the heat transfer characteristic experiments between the typical exposed human body parts and the surrounding environment,such as head and face.Analyses the value ranges and the ratios of the radiation heat transfer to the convection heat transfer at different air supply temperature,air volume and air distributions.The results show that when the head and face are in steady thermal comfort state,their convection heat transfer and radiation heat transfer are 6 to 93 W/m2 and 26 to 60 W/m2 respectively,and the ratio of radiation heat transfer to convection heat transfer is 0.47 to 6.65.According to different air distributions,the personalized ventilation is dominated by the convection heat transfer while the mixed air distribution and the seat ventilation depend on the radiation heat transfer.
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