Abstract
Not only air temperature and humidity, but also radiant temperature affects indoor thermal comfort. Therefore, radiant heat transfer should be considered in computational fluid dynamic (CFD) simulation. In this paper, thermal environment in a room equipped with cooling radiant ceiling panel (CRCP) system was estimated by radiation-coupled CFD. In order to introduce radiant heat transfer into CFD, the distribution factor was used. Two calculation cases with different emissivity were evaluated using the predicted mean vote (PMV), a measure of thermal comfort. Case of this paper, the value of PMV increases by 1.19 in the case of emissivity of 1.0 compared to the case of emissivity of 0.9. Therefore, it is important to properly consider the effect of emissivity when evaluating thermal comfort by CFD simulation.
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