不同空调系统末端热舒适现场测试对比研究

Comparative study on field test of thermal comfort of different air conditioning system terminals

对分别使用辐射地板、辐射天花和对流末端空调系统的12个办公建筑案例进行了室内环境测试和人体热舒适现场调研,主要研究了人体在不同空调系统末端条件下热感觉随操作温度的变化规律。测试发现,各种空调末端环境中的人体中性操作温度几乎一致,约为(25.4±0.1)℃。但是人体对不同末端条件下温度变化的敏感程度有较大差别。其中,对辐射天花环境的温度变化最敏感,对辐射地板环境最不敏感,对流末端则处于中间水平。可能是因为不同空调系统末端传热时主要影响的人体部位不同,而人体不同部位的冷点分布密度不同,最终导致了敏感程度的明显差别。

Conducts the indoor environment test and the on-site investigation of human thermal comfort in 12 office building cases using radiant floor,radiant ceiling and convection terminal air conditioning systems,respectively.The main research is to study the human thermal sensation changes with the operating temperature under different air conditioning system terminal conditions.The test finds that the neutral operating temperature of the human body in various air conditioning terminal environments is almost the same,about(25.4±0.1)℃.However,the thermal comfort sensitivity(TCS)to temperature changes under different terminal conditions is quite different.The human body is the most sensitive to temperature changes in the radiant ceiling environment and the least sensitive in the radiant floor environment,and the convection terminal environment is at the middle level.The explanation given in this article is that the parts of the human body mainly affected by the terminal heat transfer in different air conditioning systems are different,and the cold spot density of different parts of the human body is different,which leads to obvious differences in TCS.