浅谈PMV方程的适用范围

近年来随着人们对居住环境热舒适度的重视,利用ISO7730标准中PMV-PPD指标来进行室内热环境舒适度评价的现象越来越普遍,目前许多研究室内热环境的文章也是把PMV-PPD指标作为参考和依据,来进行研究与分析.但是对于PMV-PPD指标的适用范围却很少有人关注和了解,从而出现了对PMV指标的误用和滥用,并推导出某些不准确的结论.通过对PMV方程推导过程的分析,解释了在高温条件下PMV指标与实际情况不符的现象,进一步说明PMV方程的适用范围,从而保证在进行热舒适度研究过程中可以作出科学合理的评价与结论.

Discussion on the Application Range of the PMV Equation

With the attention to the comfort degree of living environment, the phenomenon of making use of the PMV -PPD index within the ISO7730 standard to evaluate the indoor thermal comfort degree is more and more widespread. Many papers about indoor thermal environment are based on the PMV - PPD index as the reference or basis to research and analyze. But few people understand and pay attention to the application range of the PMV - PPD index. So some people misuse and abuse the PMV index and deduce some inaccurate conclusions. In this thesis, based on the analysis of the process of deducing PMV equation, the phenomenon that PMV index is different from the fact in the high temperature condition is explained; furthermore the application range of the PMV equation is confirmed. So to obtain the scientific and reasonable evaluation and conclusion in the process of research of the thermal comfort degree can be ensured.