壁挂式太阳能空气集热器变风量控制运行效果研究  

Experimental Study on Operational Effect of Wall-mounted Solar Air Collector (WSAC) by VAV Control

作　　者：张志成[1] 陈滨[1] 姚微[1] 杨文晓[1] 

机构地区：[1]大连理工大学土木工程学院建筑环境与新能源研究所,大连116024

出　　处：《建筑科学》2011年第4期31-35,共5页Building Science

基　　金：国家自然科学基金项目(50778032);"十一五"国家科技支撑重点项目(2006BAA04B04)

摘　　要：本文以壁挂式太阳能空气集热器(Wall-mounted Solar Air Collector,WSAC)为研究对象,采用现场实测和理论分析的方法,通过研究太阳辐射照度、送风量与WSAC瞬时效率以及纯效率的关联性,提出了综合考虑建筑能耗时变风量工况下提高WSAC运行效率的途径。而后,利用实体大实验房,分别采用连续定风量送风、变风量送风以及间歇定风量送风的运行方式,对WSAC热性能及节能效果进行了实验研究。结果表明,在考虑WSAC纯效率的情况下,变风量送风的运行效率优于其它送风方式,相对连续定风量送风节能63%,同时还得到了随着太阳辐射照度变化的最佳控制运行模式。In this paper,taking the wall-mounted solar air collector（WSAC） as a research object,the experimental and theoretical studies were carried out.In detail,based on the relationships of solar irradiance,supply air flowrate,WSAC transient thermal efficiency and WSAC net efficiency,a strategy to improve the operational efficiency was proposed under the VAV conditions when the building energy consumption was considered.Furthermore,in a physical experimental room,WSAC thermal performance and energy-saving effect were analyzed under the air supply modes of constant,variable and intermittent air volumes,respectively.The results shown that the net efficiency of VAV air supply mode was larger than others in considering of the WSAC net efficiency,and compared to the constant air volume air supply mode,the energy-saving rate was 63%.In addition,the best control operation mode was obtained with the changing of solar irradiance.

关 键 词：壁挂式太阳能空气集热器 变风量 瞬时热效率 节能 

分 类 号：TK511.2[动力工程及工程热物理—热能工程]