Analysis on the Environment and Synthesis Factors Affecting the PMV Index

Thermal comfort evaluation is introduced briefly.Through applying the model of PMV index and relevant parameter PPD proposed by Fanger and programming with MATLAB,the values of PMV and PPD at the condition of different parameters in un-aircondition residence in winter and summer are computed.And the impact of room temperature,cloth resistance,room humidity and air velocity on PMV are analyzed with charts and graphs.Then the method of dimension analysis is introduced,and a synthesis parameter composed by room temperature,cloth resistance and metabolism is constructed.At last,the rationality of synthesis parameter is confirmed and correct plans are pointed out.