太阳能采暖系统储热水箱体积匹配研究  

ANALYSIS ON SIZE OF STORAGE TANK IN SOLAR SPACE HEATING SYSTEM

作　　者：郭放[1] 张俊月 田原 杨旭东[1] Guo Fang;Zhang Junyue;Tian Yuan;Yang Xudong(Department of Building Science and Technology,Tsinghua University,Beijing 100084,China;Chifeng Heran Energy-Saving Management Co.,Ltd.;Sinohydro Co.,Ltd.,Beijing 100048,China)

机构地区：[1]清华大学建筑技术科学系,北京100084 [2]赤峰和然节能科技股份有限公司,赤峰024000 [3]中国电建集团国际工程有限公司,北京100048

出　　处：《太阳能学报》2020年第9期219-226,共8页Acta Energiae Solaris Sinica

基　　金：国家国际科技合作专项(2015DFG62410);国际科技支撑计划(2014BAA01B03)。

摘　　要：以太阳能光热采暖系统的集热面积与储热水箱体积的匹配为研究对象,搭建基于小时级热量流动的太阳能采暖系统模型。基于此模型,对集热面积和储热体积匹配关系对系统运行效率、经济性及安全性的综合影响进行讨论。并以一个典型算例为例,结合经济性分析方法,给出太阳能采暖系统最优集热面积和水箱体积的设计流程。研究表明:单位集热面积匹配储热体积的最优值并非是一个定值,而是与系统的总集热面积有很强的相关性。系统集热面积越大,单位集热面积对应的最优储热体积越大。相应地,系统的热损失也越大,单位集热面积的有效供热量越小。因此,需要从集热量与热损失2个方面综合权衡系统规模,并合理匹配储热体积,以保证系统运行的经济性和安全性。The correlation between the size of solar collector and storage tank is a key question in the design of solar space heating system.In this study,a model of solar water heating system based on hourly energy flow is established.Based on this model,the combined effects of collector area and storage volume on the system thermal performance and economy is analyzed,and a simple procedure for determining the optimal system size is illustrated.Study showed that the optimum ratio between storage volume and collector area increases as the total collector area increases,and the heat loss of the storage tank increases accordingly.Therefore,a trade-off between heat collection and heat loss has to be made by correlating storage volume and collector area reasonably to guaranty operation safety and economy of solar water heating system.

关 键 词：太阳能 太阳能采暖 太阳热水 系统设计 储热水箱 

分 类 号：TSK551+.2[轻工技术与工程]