Human thermal adaptation in real building environment (1) — Comparison between air-conditioned and non-air-conditioned public buildings

Conducts a field study in six public buildings in Beijing, three of which are non-air-conditioned and the other three are running with centralized air conditioning system. Measures indoor environmental parameters, and investigates thermal comfort situation of building occupants. The neutral temperature of occupants in non-air-conditioned environment is 25.7 ℃, while that in air-conditioned environment is 25.4 ℃. When indoor temperature is higher than neutral temperature in summer, air-conditioned building occupants are more sensitive. Thermal sensation vote (TSV) of non-air-conditioned building occupants is lower than that of air-conditioned building occupants, and non-air-conditioned building occupants show better thermal adaptation to warm environment. People who are used to non-air-conditioned environment have stronger physiological acclimatization and lower expectation. They are more likely to improve their thermal sensation by using natural ventilation or electric fans to enhance air velocity.