为了保证动力分布式供热系统运行调节过程中变频泵的高效工作，讨论了分布式供热管网系统背压对用户泵运行调速的影响，提出了确定用户泵变频范围的方法，为分布式系统设计中水泵参数及台数确定提供选型参考。%In order to ensure the high-efficient work of variable frequency pump during operation and adjustment of the distributed powerheating system , the articlediscusses the effects of distributed heating network system's backpressure on thespeed governing operation of pump ,and provides a method to determine the pump's frequency range .In addition , the article providesselection guide for water pump's parameters andnumber in the design of distributed system .
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