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            暖通空调杂志社>期刊目次>2019年>第5期

            围护结构内表面发射率对人体热舒适的影响

            Effect of inner surface emissivity of envelope on human thermal comfort

            卢素梅 孟庆林
            华南理工大学亚热带建筑科学国家重点实验室

            摘要:

            基于人体热平衡和辐射换热原理,对Fanger的PMV模型进行了改进,建立了基于围护结构内表面发射率的热舒适模型,分析了冬夏季工况下不同内表面发射率对人体热舒适和平均辐射温度的影响,得到了满足人体热舒适与节能要求的围护结构内表面最佳发射率。结果表明:夏季工况下,随着表面发射率的减小,PMV值减小,同等舒适条件下室内设计温度可提高1~2 ℃;冬季工况下,随着表面发射率的减小,PMV值明显增大,同等舒适条件下室内设计温度可降低2~3 ℃。

            关键词:围护结构,内表面发射率,热舒适,预计平均热感觉指数(PMV),辐射换热,平均辐射温度

            Abstract:

            Based on the principle of human heat balance and radiation heat transfer, improves the PMV model of Fanger, and establishes a thermal comfort model based on the inner surface emissivity of envelope. Analyses the influence of different inner surface emissivity on human thermal comfort and mean radiant temperature in winter and summer working conditions, and obtains the optimal inner surface emissivity of envelope meeting the requirements of human thermal comfort and energy saving. The results show that the PMV value decreases with the decrease of surface emissivity in summer, and the indoor design temperature can be increased by 1 to 2 ℃ under the same comfortable conditions. The PMV value increases obviously with the decrease of surface emissivity in winter, and the indoor design temperature can be reduced by 2 to 3 ℃ under the same comfortable conditions.

            Keywords:envelope,innersurfaceradiancerate,thermalcomfort,predictedmeanvote(PMV),radiationheattransfer,meanradianttemperature

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