Abstract
This paper presents a guide for optimum design of room air distribution in summer cooling with the slot air-supply system. When discharging the cool air from the slot, the air pattern remains horizontal on the ceiling until the separation occurs. After separation, the cool air drops down into the occupied zone that causes discomfort to occupants. In this paper, a scale for evaluating discomfort by cool air jets is derived. The experiments give us characteristics, which enable us to estimate first, the value of the maximum air velocity in the occupied space and second, the value of the discomfort scale on the point where the cool jet drops. Based on the analysis for minimizing discomfort, an optimum set of values for the outlet conditions is suggested.
