干式与湿式地板辐射做法结合下送风供冷系统性能比较实验研究  

Comparative Experimental Study on Performance of Down Blast and Cooling Systems Combining Dry and Wet Floor Radiation Practices

作　　者：张东亮[1] 刘明会[1] 芮应翔[1] 唐虎[1] 

机构地区：[1]南京工程学院能源与动力工程学院,南京211167

出　　处：《建筑科学》2013年第12期55-59,共5页Building Science

基　　金：住房和城乡建设部科学技术计划项目(2013-K1-6);南京工程学院校级科研基金项目(YKJ201213);江苏省高等学校大学生实践创新训练计划项目(2012JSSPITP1988)

摘　　要：本文针对干式与湿式地板辐射做法结合下送风供冷系统进行了性能比较实验研究,在相同室外气候和运行参数条件下,通过测量2种系统从开启到关闭的过程中室内空气温度、地板表面温度、围护结构表面温度等参数,对比分析2种系统稳定运行时室内温度场、系统换热量和热舒适性。研究结果表明,干式系统比湿式系统启动快;系统稳定运行时,湿式系统地板净辐射换热量比干式系统大,其平均辐射温度、作用温度、PMV-PPD比干式系统低;湿式系统热舒适性较高,干式系统的热舒适性可以通过增加地板净辐射换热量或下送风系统供冷量加以改善。本项研究旨在为辐射供冷系统设计、施工与调试运行提供实验依据。This paper conducted comparative experimental study on performance of air and cold supply systems combining dry and wet floor radiation practices, and compared and analyzed indoor temperature fields, heat exchange amounts and thermal comforts of two systems during stable operation by measuring indoor air temperature, floor surface temperature, envelope surface temperature and other parameters of these two systems from start to stop. The results showed that dry system started faster than wet system;during the stable operation of the systems, heat exchange amount of net radiation of wet system floor was more than that of dry system,while mean radiant temperature,operative temperature and PMV-PPD of wet system were lower than those of dry system;thermal comfort of wet system was higher, and thermal comfort of dry system could be improved by increasing heat exchange amount of net radiation of floor or cooling capacity of down blast system. This study was intended to provide experimental basis for design, construction and commissioning of radiant cooling system.

关 键 词：干式地板 湿式地板 辐射供冷 下送风 实验研究 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]