Establishment of thermal comfort model and evaluation of thermal environment for natural ventilated buildings in Chongqing

Based on the analysis of previous researches on thermal comfort for naturally conditioned spaces at home and abroad, presents an improved evaluation model by considering the humid climate characteristics in Chongqing. Monitors the indoor and outdoor thermal parameters of a village residence in the whole year using electronic temperature and humidity recorders, and evaluates the indoor thermal environment with the model. Analysis results show that the ratios of the hours of indoor and outdoor relative humidity exceeding 70% to the total hours of the whole year account for 95.4% and 87.2% respectively, and the hours of indoor temperature above 28 ℃ and relative humidity exceeding 70% are 1 196 hours. The comfortable hours of the whole year are 3 838 hours, accounting for 43.8% of the total hours. The difference between the comfortable hours obtained by the model and existing model is 405 hours in the whole year and 342 hours in the cooling season. The higher the temperature, the greater the effect of relative humidity on thermal comfort is. So the relative humidity should not be ignored at high temperature, but the reliability of the improved model needs further examination and validation.