Abstract
There had previously been many studies about displacement ventilation systems, but only a few cases mentioned mechanism of heat emitting. Therefore, this study presents the effects of adjusting heights and air volume of heat emitting to the indoor thermal environment by experiments of the model and the factory installed a displacement ventilation system. As results of them, adjusting heights and air volume of heat emitting avoids rise in temperature at the low level in the room. And it was suggested that a normalized temperature can be given as an unique function of the Archimedes number.
