Human thermal comfort research in hot-humid area of China (1): experimental methods and results

Based on the classic thermal comfort research methodology, performs a climate chamber experiment with 30 typical subjects in the hot-humid area of China in the summer of 2008, and questionnaire and physiological responses are collected under six different temperature and humidity combination conditions in the range of cool to warm. The results show that the neutral temperature is 26.9 ℃ in modified temperature; the preferred sensation is -0.2 in summer; the partial pressure of water vapor is about 3 500 Pa when the humid sensation is neutral; the mean skin temperature is 33.2 ℃ corresponding neutral thermal sensation; the mean skin temperature and skin wetness degree are important in predicting thermal sensation and thermal comfort; there is a linear relation between the heart rate and thermal comfort, and between the blood pressure and thermal comfort in cooler environment but the blood pressure varies not obviously with thermal sensation in warmer environment.