Effect of humidity and small air movement on thermal comfort under a radiant cooling ceiling by subjective experiments

摘要

Radiant air-conditioning systems are expected to be more comfortable and superior energy-saving than convective air conditioning ones generally used. There are some studies on radiant cooling systems. However, they were seldom put to practical use bexause of dew point problem in Japan. The objective of this study is to investigate the thermal comfort of local parts of the body and the whole body, in particular, including the effects of hyumidity (45/100 rh, 65/100 rh, 85/100 rh) and small air movements, by subjective experiments under a radiant cooling system. The experiments have been performed by using radiant cooling panels in a climate chamber. Subjects were seated on a chair under the radiant cooling poanels, and voted their thermal sensation and comfortable sensation.