太阳能热水系统中集蓄热系统的分析  

Exergy Analysis of Heat Storage System in Solar Hot Water System

作　　者：王沨枫 陈晨[1] 周海珠[1] 李晓萍[1] 杨彩霞[1] 李以通[1] 

机构地区：[1]中国建筑科学研究院,北京100013

出　　处：《煤气与热力》2018年第1期40-42,共3页Gas & Heat

基　　金：国家科技支撑计划子课题(2014BAJ01B06-03);中国建筑科学研究院青年科研基金项目(20152001331030101)

摘　　要：对太阳能热水系统中集蓄热系统(由太阳能集热器、蓄热水箱、循环泵组成)的效率以及太阳能集热器、蓄热水箱的损失率进行计算。建立计算方法,针对规模相近分别采用普通全玻璃真空管集热器、U形全玻璃真空管集热器的集蓄热系统,计算系统效率、设备的损失率。采用U形全玻璃真空管的集蓄热系统效率高于采用普通全玻璃真空管的集蓄热系统。在集蓄热系统中太阳能集热器的损失率最高,其次是蓄热水箱。The exergy efficiency of heat storage system composed of solar collectors,heat storage water tanks and circulating pumps as well as the exergy loss rate of solar collectors and heat storage water tanks are calculated. The exergy calculation method is established,and for similar scale,the exergy efficiency of the system and the exergy loss rate of the equipment are calculated by using the common full glass vacuum tube collector system and the U-shaped full glass vacuum tube collector system,respectively. The exergy efficiency of the heat storage system using U-shaped full glass vacuum tube is higher than that of the heat storage system using the common full glass vacuum tube.In the heat storage system,the exergy loss rate of the collector is the highest,followed by the heat storage water tank.

关 键 词：太阳能热水系统 太阳能集热器 蓄热水箱 效率 集蓄热系统 

分 类 号：TK511.2[动力工程及工程热物理—热能工程]