开式地表水源热泵在湖南某人工湖的应用研究

Utilization of Artificial Lake as Heat Source-sink for Open-loop Surface Water Heat Pump System in Hunan

我国南方地区的地表水资源丰富，其中蕴藏着丰富的低位热能，适合于发展地表水源热泵。2004年，在湖南省湘潭市建成了利用湖水的开式地表水源热泵系统用于区域供冷供热。建造该系统前，采用简化模型对运行时的水温分布情况进行了模拟分析。对系统投入运行以来每日的进水温度进行了监测，对地表水源热泵和风冷热泵的COP进行了测试。测试结果表明，在相同的热汇／热源温度和供水温度下，地表水源热泵的COP比风冷热泵高0．4-0．9，该系统的COP值和运行稳定性均优于风冷热泵。

Rich surface water resources in south China can be utilized as heat source-sink for heat pump systems. A district heating and cooling system that utilizes lake water as heat source- sink of heat pumps has been constructed in Xiangtan, a city in Hunan province in south China. The lake water temperature distribution during continuous operation was simulated before the construction. The entering water temperature was monitored everyday. COP values of the system and ASHP units at different source and sink temperatures were determined based on a series of measurements. The field test results show that the surface water heat pump system could offer advantages over air source heat pumps, such as higher energy efficiency and improved reliability.