Experimental Research On Evaluation Of Radiant Thermal Environment Based On Skin Temperature

Radiant heating and cooling systems have received extensive attention due to their great potential for energy saving and high thermal comfort.It is mainly used to radiate heat exchange with the indoor thermal environment.Larger temperature difference between the cold(hot)radiation surface and the normal wall surface will form an asymmetric radiant heat environment,and influence the evaluation of thermal comfort.In order to study the thermal comfort evaluation method under radiant heat environment,The experimental set four different radiant heat environments including roof and floor radiant heating,roof and floo radiant cooling.Subjects were screened for different human body thermal comfort test experiments in different radiant thermal environments.Skin temperature is selected as an objective physiological parameter,subjective thermal comfort voting and indoor thermal environment parameters are used to evaluate the human thermal comfort under radiant heat environment.The main research content of this paper is as follows:(1)Under different radiant heat environments,the humansubjective thermal comfort vote is selected to analyze and evaluate the thermal comfort at different operating temperatures.(2)Contrast human subjective thermal comfort voting,analyze the applicability of PMV-PPD model to evaluate human thermal comfort under radiant heat environment.(3)Exploring the relationship between skin temperature and operating temperature and human subjective thermal comfort in different radiant heat environments,and to analyze their relationship with subjective thermal comfort evaluation.(4)Based on the above experiments and analysis results,a comprehensive evaluation model based on skin temperature,subjective thermal comfort and operating temperature under different radiation end,heating and cooling environments was established using partial least-squares regression.