某工程土壤源热泵间歇运行的测试研究

The Testing and Research on Intermittent Operation of Ground Source Heat Pump System in a Project

土壤源热泵系统作为一项节能、环保的空调系统方式,目前已得到广泛应用.然而土壤源热泵系统的埋地换热器受土壤物性影响较大,连续运行时热泵机组的冷凝温度或蒸发温度会受土壤温度的影响发生波动,从而导致热泵机组和系统的能效比发生变化.笔者以实际工程为测试对象,重点分析了土壤源热泵系统间歇运行对机组和系统能效比EER的影响,得出在该工程土壤源热泵系统间歇运行测试条件下,机组EER基本稳定在4.5之上,系统EER基本维持在2.5左右,达到了较高的运行效率.

The ground source heat pump system has been used widely because of its economy and unpolluted characteristic;however, its buried heat exchanger can be affected greatly by soil and the heat pump units＇ evaporation temperature or condensation temperature can be changed under uninterrupted operation, too, which makes heat pump units＇ and air-conditioning systems＇ EER change. A project is tested in this article which mainly analyzes the changes of heat pump units＇ and air-conditioning systems＇ EER under ground source heat pump in intermittent operation. In this test, the heat pump units＇ EER maintains above 4. 5, and air-conditioning systems＇ EER almost reaches 2.5, both have achieved higher efficiency of work.