采用新型防冻液的严寒地区太阳能供热系统特性分析  

Characteristic analysis of new antifreeze solar heating system for cold region

作　　者：白卫东 李宗凯 詹旭东 李海峰 邱益阳 何一坚[2] Bai Weidong;Li Zongkai;Zhan Xudong;Li Haifeng;Qiu Yiyang;He Yijian(Thermal Branch of Datang Jilin Power Generation Co.,Ltd.,Changchun 130051,China;Institute of Refrigeration and Cryogenics,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]大唐吉林发电有限公司热力分公司,吉林长春130051 [2]浙江大学制冷与低温研究所,浙江杭州310027

出　　处：《新能源科技》2023年第3期28-33,43,共7页New energy technology

基　　金：国家重点研发计划项目课题(2016YFB0901404)。

摘　　要：严寒地区对于供热采暖系统依赖性较大,而其中太阳能资源丰富的地区,可以利用太阳能进行供热,以部分满足日常采暖需求。鉴于太阳能供热系统在严寒地区使用水作为集热循环介质时存在冻胀和管道损伤的隐患,同时,为了给太阳能供热系统的进一步改进提供数据支持,并给实际工程应用提供数据理论支撑,文章通过仿真模拟的方法,对采用了55%质量浓度的乙二醇防冻液的太阳能供热系统的运行情况进行了研究。研究主要利用TRNSYS软件构建该系统的仿真模型,并将长春地区的气象参数等作为外部文件输入,得到并分析了系统运行数据。研究结果表明,采用该乙二醇防冻液的太阳能供热系统具有良好的性能,太阳能保证率可达30%以上,集热器热效率可以稳定在65%左右;节能环保方面,以所选建筑——长、宽、高分别为25 m、20 m、3 m为例,系统在整个采暖季可节能250.02 GJ,节能性和应用前景良好。As known,cold regions are more dependent on the heating system,and for regions rich in solar energy resources can use solar energy for heating and partially meet the daily heating needs.As a kind of renewable energy,solar energy is of great significance to reduce fossil fuel consumption and carbon emissions by utilizing heat supply.In view of the hidden dangers of frost swelling and pipeline damage when the solar heating system uses water as a heat collection cycle medium in cold regions,and in order to provide theoretical data support for the further improvement of solar heating system and the practical engineering applications,this study studied the operation of a solar heating system using 55%glycol antifreeze through simulation.In this study,TRNSYS software was used to build the simulation model of the system.and the meteorological parameters of Changchun area are input as external files to obtain and analyze the system operation data.The results show that the solar heating system using the glycol antifreeze has good performance,the solar guarantee rate can reach more than 30%,and the thermal efficiency of the collector can be stable at about 65%;In terms of energy conservation and environmental protection,taking the selected buildings-length,width and height of 25 m,20 m,3 m,respectively,as an example,the system can save 250.02 GJ in the whole heating season,which has good energy-saving and application prospect.

关 键 词：严寒地区 太阳能供热系统 乙二醇 TRNSYS模拟 

分 类 号：TU832.17[建筑科学—供热、供燃气、通风及空调工程]