Research of summer comfortable temperature in Air-conditioning Room in Chongqing, China

An experimental study on thermal comfort was conducted to explore summer comfortable temperature in Air-conditioning Room in August 2009. Records the different parts of the skin temperature data of 20 randomly selected subjects in a room temperatures ranging from neutral to warm during the two hours experiment, and simultaneously recording participants of the overall and partial thermal sensation and preferences by questionnaires. The results show that when the clothing thermal insulation is 0.3clo and the subjects is sedentary activity, the thermal neutral temperature is 25.9°C, and 29°C of the air temperature is the upper limit of human body accepted temperature. A higher tolerance of temperature was shown by the subjects in this sub-tropical climatic region of China. The results also show that the skin temperature of head, back, chest and other parts in the warm environment begin to solidify, but the vote of the thermal sensation is higher than other parts, which is the primary reasons caused thermal uncomfortable.