叠压供水系统中水泵选型与节能的关系

摘要

Starting from the changes of centrifugal pump working condition and characteristic curve to determine efficient regional range of pump operation, the pump efficiency and the characteristic curve were analysized, and the pump perfor⁃mance parameters which ensure the efficient operation of the system were offered. By using engineering example to verify the correctness of the pump selection method, the results show that only when selection and operation of water pump are both reasonable can pressure-superposed water supply system obtain the expected energy-saving effect.%从离心水泵运行工况变化和特性曲线分析入手，确定水泵运行的高效区域范围，对水泵进行效率分析和特性曲线拟合，给出保证系统高效运行的水泵性能参数，以工程实例来验证水泵选型方法的正确性，结果表明：叠压供水系统在水泵选型和运行情况均合理时，才能取得预期的节能效果。