高层住宅太阳能热水系统性能测试及分析  

Transient Performance test and research of solar water heating system for high rise resiential buildings

作　　者：罗昊敏 张杰[1] 穆永超 张洁雄 Luo Haomin;Zhang Jie;Mu Yongchao;Zhang Jiexiong(Hebei Engineering University)

机构地区：[1]河北工程大学

出　　处：《区域供热》2021年第3期92-97,共6页District Heating

摘　　要：以研究高层住宅建筑太阳能热水系统为目的,对天津市某单元楼太阳能热水系统进行现场测试,通过对比两种工况测试数据,分析了太阳能热水系统的运行性能。研究结果表明,两种工况下板式换热器平均传热系数分别为2828.54 W/(m^(2)·K)、2919.05 W/(m^(2)·K),且换热器出口侧温差较小,换热存在不合理现象;工况一两个并联管路的平均流量分别为1.54 m^(3)/h、3.76 m^(3)/h,管路不平衡率为0.59;工况一、二(工况一、二分别代表系统在晴天、多云两种典型天气条件下的系统运行状态)室外环境温度分别为25.44℃、28.01℃,集热器平均集热效率分别为27.25%、30.33%,集热器集热效率受室外温度因素影响较大。In this paper,in order to study the solar water heating system of high-rise residential buildings,the field test of the solar water heating system of a unit building in Tianjin is carried out.By comparing the test data of two working conditions,the operation performance of the solar water heating system is analyzed.The results show that the average heat transfer coefficient of plate heat exchanger is 2828.54 W/(m^(2)·K)and 2919.05 W/(m^(2)·K)under the two working conditions,and the temperature difference at the outlet side of the heat exchanger is small,and the heat transfer is unreasonable;the average flow rate of one or two parallel pipelines is 1.54 m^(3)/h and 3.76 m^(3)/h,and the imbalance rate of pipeline is 0.59;the outdoor ambient temperature of condition 1 and 2(Working conditions 1 and 2 respectively represent the system operation status of the system under two typical weather conditions of sunny and cloudy)is 25.44℃ and 28.01℃ respectively,and the average heat collection rate of the collector is 25.44℃ and 28.01℃ respectively.The thermal efficiency is 27.25% and 30.33% respectively.The heat collection efficiency of the collector is greatly affected by the outdoor temperature.

关 键 词：太阳能 热水系统 传热系数 不平衡率 集热效率 

分 类 号：TU976[建筑科学] TU822.1[动力工程及工程热物理—热能工程] TK515