Abstract
Experiments were conducted on the thermal environment, the physiology, psychological index of human beings, and work efficiency with the aim of establishing a method of extracting thermal environmental conditions suitable for outdoor space use. It was assumed that work was focused on work at the time of work, compared with when sitting, and the sensitivity tended to decrease even changes in the thermal environment and the human physiology. From the results of experiments, it was presumed that the suitable conditon of thermal environment in the outdoor space may be different depending on the space utilization.