试论变频水泵的选型
Discussion on selection of variable frequency water pumps
摘要：
分析了变频调速水泵在循环水系统和补水系统中的工作特性，认为对于采用变频调速的水泵，在选型时可按照非变频泵的选型方法选择流量及扬程等参数，不需要额外增加水泵扬程的富余量。
关键词：变频循环水泵,变频补水泵,富余量,变频范围,水泵选型
Abstract：
Analyses the operating characteristics of the variable frequency pumps working in circulating water system and make-up water system. Considers that the parameters such as flow and head can be selected in term of the selection method of non-variable frequency pumps, and that the margin of water pump head do not need considering.
Keywords:variable frequency circulating pump, variable frequency make-up pump, margin, scope of variable frequency, water pump selection