Abstract
Experiments were performed to evaluate the air flow and air temperature distributions in a model room heated by both blown hot air from the lower supply air opening and blown room temperature air from the upper one in case of a model of an indoor ceiling-suspended system air conditioner having two supply air openings. Measurements were made of the local air velocities and local air temperatures in the room by varying the supply air temperatures, the supply air velocities and supply air jet angles of two supply air jets from the model indoor unit. The local air velocities in the room were determined by means of a particle image tracing technique. The obtained results indicated that two supply air jets formed a flow that circulated in the large part of the room. It was also found that difference in vertical air temperature became small.
