Climate chamber study on impacts of non-isothermal and sensible air supply on human thermal comfort in warm environments

Performs the voting experiments of thermal sensation, thermal comfort and thermal environment satisfaction of the subjects in climate chamber on conditions of two combination of temperature and relative humidity and of three air supply modes of low temperature steady air movement, low temperature simulated natural wind air movement and isothermal simulated natural wind air movement. The results show that the thermal comfort of the subjects can be satisfied on conditions of indoor temperature from 28 to 30 ℃, relative humidity from 40% to 45%, mean air supply speed 0.5 to 0.7 m/s and air supply temperature of 28 ℃. Suggests that the human body should be cooled by simulated natural wind air movement with air speed of 0.5 m/s by ceiling fan when the indoor temperature is 28 ℃, while it should be cooled by simulated natural wind air movement with air speed of 0.5 m/s and air temperature of 28 ℃ by air conditioning devices when the indoor temperature is 30 ℃.