基于PMV-PPD的嵌管式外墙辐射空调系统夏季热舒适与节能潜力分析

Thermal comfort and energy-saving potential analysis of radiant air-conditioning system using exterior wall with embedded pipes in summer based on PMV-PPD

以采用嵌管式外墙的上海办公空调房间为研究对象,利用DesignBuilder软件建立空调结合辐射墙体模型,模拟分析夏季南向外墙增加布置嵌管后其内壁面温度和热舒适指标PMV-PPD的变化趋势,评估采用该种组合空调方式的节能潜力。研究结果表明,增加嵌管后,嵌管式外墙内壁面温度呈现显著降低趋势,影响嵌管式外墙性能的主要因素为进水温度。在满足90%PMV低于1的前提下,本文研究的空调器搭配嵌管式外墙辐射系统室内设计温度可以提高1℃。

Taking offices with air conditioner and embedded pipe wall in Shanghai as study object,the model combined with air conditioner and radiation surface is built up using DesignBuilder.The change trends in summer of the internal wall temperature and thermal comfort index PMV-PPD of the south-facing wall embedded with pipes are analyzed,and the energy-saving potential for this type of combined air-conditioning is estimated.The research results show that the internal wall temperature of the wall with embedded pipe significantly reduces,and the key performance impacting factor is inlet water temperature.On the condition that 90%of PMV is lower than 1,the design temperature of room using air conditioner combined with radiation system of exterior wall with embedded pipes can be increased by 1℃.