Research on indoor thermal environment of residential buildings in summer in Jiaozuo

摘要

With the development of living level, people pay much attention to thermal environment. The Predicted Mean Vote (PMV) is the famous index to evaluate the thermal environment, which has been widely used in practice. Air temperature, radiant temperature, humidity and air movement is the four basic environmental parameters. In this paper, it is purposed to look into the actual conditions of indoor thermal environment in summer on residential buildings in Jiaozuo area of Henan Province. Based on the testing data of the four basic environmental parameters about model buildings in summer of 2005, the paper deduces the PMV -^sPPD and analyses the indoor thermal environment of residential buildings in Jiaozuo. Furthermore, it puts forward some measures to improve the quality of indoor thermal environment. The results can be summarized as follows: ( 1 ) With the trend of global warming and urban heat island, the summer climate of Jiaozuo is very hot though it is located at the heating section. Most families low the indoor temperature by air conditioners. The usage of them in dwelling houses is raised.; (2) The high PPD index shows that the dweller is not satisfied with indoor thermal comfort in summer, especially on the noon and at night; (3) Humidity can make strongly affection to predict thermal environment; (4) To improve the indoor thermal environment, some measures can be taken, such as by natural ventilation, shading devices and virescence etc.