水源热泵机组地下水变流量运行特性研究

Study of water-source heat pump unit under variable ground water flow rate conditions

通过研究满液式水源热泵机组在不同负荷率时的运行情况和地下水水泵变频耗功,得到了地下水地源热泵系统变流量运行特性,并确定了机组部分负荷下,地下水地源热泵系统性能最佳时地下水需求量百分数;提出了具有较高系统综合性能的运行方案。采用地下水变流量技术可节约运行费用和地下水需求量,增加的初投资一年内可回收。

Studies the operating performance of water-source heat pump for different loads and ground water pump power consumption with variable frequency, obtains the variable flow rate operating characteristics of the water-source heat pump system. Finds out the best partial load coefficient performance at some ground water flow rate proportion and presents an operating scheme. The running costs and ground water quantity will be saved by using variable ground water flow control, and initial investment can be recovered within one year.