南京某湖水源热泵系统性能提升改造分析  

Analysis of the Performance Improvement of a Lake Water Heat Pump System in Nanjing

作　　者：胡秋明[1,2] 罗景辉 武雪梅 张昌建 HU Qiuming;LUO Jinghui;WU Xuemei;ZHANG Changjian(Hebei University of Engineering,Handan 056038,Hebei,China;Redco(Tianjin)Real Estate Co.,LTD,Tianjin 300450,China;China Construction Eighth Engineering Division Corp.,Ltd.,Northern China Branch,Tianjin 300450,China)

机构地区：[1]河北工程大学,河北邯郸056038 [2]力高(天津)地产有限公司,天津300480 [3]中国建筑第八工程局有限公司华北分公司,天津300450

出　　处：《建筑科学》2024年第6期65-71,共7页Building Science

基　　金：河北省重大科技成果转化项目“矿山余热废热资源化利用成套装备研发与产业化”(21284102Z);河北省重点研发计划项目“太阳能,地热能、相变能多能互补(电、热、冷系统)关键技术与装备研发与示范”(236Z4310G);河北省创新能力提升计划项目“河北省暖通空调后补助经费”(2256769H)。

摘　　要：通过介绍湖水源热泵系统原理,分析了湖水源热泵在冬季供热可能会出现低温停机的问题,提出了太阳能复合湖水源热泵系统的解决方案。以南京某湖水源热泵系统为例,为了解决原湖水源热泵冬季低温停机的问题,对原湖水源热泵系统进行了优化改造,设计了太阳能-湖水源热泵复合系统。通过建立湖水热交换模型及实测运行数据,对比了优化前后的系统运行参数、节能效果及经济性指标。结果表明,优化后的太阳能-湖水源热泵复合系统能够有效解决冬季低温停机问题,其低温运行稳定,系统综合性能系数(COP)平均升高0.45,同时,其制热季节性能系数达2.72,比原系统的制热季节性能系数高0.24,节能效果显著;与优化前系统相比,供热季节约运行费用72 710元,投资回收期约为0.17 a,具有良好的节能效果和经济效益,为以后湖水源热泵的优化设计提供参考。By introducing the principle of lake-water heat pump systems,the problem of potential shutdown of lake water heat pumps at low temperatures in winter was analyzed,and the solution of a solar energy compound lake water heat pump system(SECLWHPs) was proposed.Taking a lake water heat pump system in Nanjing as an example,optimization and upgrading was made,and a SECLWHPs was designed to address the problem.By establishing the lake water heat balance model and measuring the operational data,the system operating parameters,energy saving effect,and economic indicators before and after the transformation were compared,the results show that the SECLWHPs can effectively solve the problem of shutdown of the system in low temperature.The system runs quite stable,and the COP is increased by 0.45 on average.The seasonal performance coefficient of the optimized system is 2.72,0.24 higher than the original system.Compared with the system before optimization,its operation cost in heating season is about 72,710 yuan,and the payback period is about 0.17 years,showing good energy saving and economic benefits,and providing a reference for the optimization design of LWHPS.

关 键 词：低温 湖水源热泵 太阳能 性能系数 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]