动力分散系统中零压差点位置及水泵扬程的确定

Determination of zero-pressure point location and water pump head in distributed power systems

运用水压图分析了零压差点位于不同位置时动力分散系统的水压分布。结果显示,零压差点应位于临界点与热(冷)源之间,才能消除调节阀能耗,从而使系统输配能耗最低;零压差点位于临界点与热(冷)源之间的不同位置时,水泵的配置方案不同,但各水泵的输出功率总和相等。

Using the pressure diagram analyses the pressure distribution of the distributed power system when the zero-pressure point is in different locations.The results show that the zero-pressure point should be at the location between the critical point and heat or cold source,which can cause the transmission energy consumption of the system to be lowest because of eliminating the energy consumption of the regulating valve,and that when the zero-pressure point is in different locations between the critical point and heat or cold source,disposition plans of water pumps are almost different,but total output powers of the pumps are the same.