Personal control behavior has potentials for both saving energy and maintaining comfort of human body. However

few studies are found on the influence of personal control behavior on thermal comfort in hot and humid environment. In this study

a series of experiments of personal-controlled desk fan were conducted in a hot and humid environment. In total

24 subjects were invited to participate in the experiments and they experienced the environments which were set at 26

28

and 30 ℃ with fixed or free-controlled local air flow

respectively. The experiment analyzed the comfort of the subjects under different working conditions. The results show that the use of desk fan significantly improved the subjects' thermal comfort. And the individual control behavior can not only lead to a better thermal comfort situation

but also show potential in energy-saving. When the subjects could freely control the fan

the thermal sensation is very close to neutral

and the average power of fans is at the lowest level.