The Analysis of Outdoor Thermal Comfort in Guangzhou during Summer

Abstract

1582 valid questionnaires are collected though testing method of field environment parameters and subjective questionnaire survey to investigate and analysis the outdoor thermal environment in Guangzhou area. As questionnaires shown, the neutral temperature of PET is 24.41℃, the upper temperature limit that 90% respondents accept is 30.97℃, which is much higher than the existing standards, while the desired temperature is 23.65℃ via establishing Logistic regression model. As the result of comparing the differences of gender in thermal comfort, women are more sensitive than man in a sense of slightly stronger radiation, the effect value of 15%. Analysis of the correlation between the elements shows the different degrees of impact from environmental parameters to actual thermal sensation and thermal expectations, While establishing the model of thermal sensation and environment parameters by stepwise regression, it emphasizes enormous potential of the initiatives in improving the thermal environment in summer outdoor, such as increasing air flow and improving shade conditions.