The water flow rate through the terminal devices in water system with single pumps is controlled by the by-pass valves when the air conditioning system is under part-load.

• 部分负荷时,单式泵变流量空调系统通过旁通阀控制流经末端设备的水流量,则旁通流量的确定是正确选择旁通阀的前提。