| Summary: | 碩士 === 遠東科技大學 === 機械研究所 === 96 === This article is attempted to study the temperature and velocity field varied with the influences of heat source and recirculation fan in the air conditioned room. Both the numerical simulation and experimental work are adopted in this study. The results present the temperature and velocity fields are going stable with time marching. They also indicate that the average temperature without circulating fan is lower than that of with circulating fan condition. But the temperature distribution is more uniform for the circulation fanned case, because the indoor air stream is disturbed by the circulating fan, and the hot and cold air streams are mixed, causing insignificant deviation of air temperature. The local low temperature zone appeared in the case which without circulating fan and make occupants feeling uncomfortable
The steady time of its indoor temperature and velocity field is about within twelve minutes for all the six cases. The results shown in the experimental work are slightly higher than that of numerical analysis both for velocity magnitude and temperature, but the results of numerical simulation and experimental work are in a good agreement.
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