An experiment is conducted on the impact of green roof on Indoor Human Thermal Comfort. The result shows that the temperatures of the building walls and indoor air fall for certain degrees

and that is good. But unfortunately

the relative humidity of the indoor air rises. Totally speaking

the whole effect is changed from feeling warm to basically acceptable. When the requirement of the indoor environment is high

it is impossible to be satisfied by exploiting green roof solely

other methods

such as using night ventilation

electric fans or air-conditioners

should be taken at the same time.