Water source heat pump( WSHP)replaces cooling towers with underground constant temperature water, and has the characteristics of high efficiency energy-saving. But energy-saving problems for high energy consume equipments such as of main engine, freezing and cooling water pumps should be considered in the utilization. This paper expatiates compressor of variable level and pump variable flow energy principle, the control scheme of energy-saving closed-loop, and the design of control system in WSHP.%水源热泵用地下恒温水源代替冷却塔,具有高效节能的特性.但在实际应用中,还应充分考虑压缩机,水泵等高耗能设备的节能问题.本文重点阐述水源热泵系统中压缩机的变能级和水泵的变流量节能原理、节能控制方案和控制系统的设计.
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