Air movement is one of the six main variables determining human thermal comfort. This work focuses on air movement for cooling in the expected temperature range, 25.5°C to 28.5°C, of the so-called transition zone: the transition zone from desirable cooling to uncomfortable draft, involving a complicated function of physics, physiology, and human expectation. Fifty-four human subjects were given control of the air supply velocity from a desk fan (FAN), a floor-mounted diffuser (FMD), and a desk-mounted diffuser (DMD) at a single ambient air temperature. Physical measurements of the environment were made and subjective votes collected, which included thermal sensation, thermal preference, work area preferences, personal control preferences, and health characteristics. A model that predicts the percentage of satisfied people (the PS model) as a function of air temperature and air movement in warm conditions is proposed.
|Number of pages||16|
|Publication status||Published - 1994|