A STUDY ON PHYSIOLOGICAL AND PSYCHOLOGICAL RESPONSES TO FLUCTUATING AIR MOVEMENT : The experiment of thermal sensation in the case where subjects move to the neutral environment with air movements from a hot one

This study focuses on occupants' physiological and psychological responses to fluctuating air movement, like natural outdoor light wind in summertime. Subjects firstly stayed in a hot room (34℃, 60% rh, still air) for 1 hour, then moved to another one (28℃, 50〜60% rh, constant and fluctuating air movements) for 1 hour. The velocity of the constant air movement was 0.4 m/s, while the fluctuating ones were combined with the amplitude in range of 0.2〜1.0 m/s and period of 20s, 30s and 60s using rectangular wave. Skin temperatures, heart rate, thermal sensation, comfort vote and so on were measured. As a conclusion, the fluctuating air movement was more desirable than the constant one and it maintained thermal comfort and increased the occupants' pleasantness.