Abstract:The formulas for mechanical,hydraulic,cubage and overall pump efficiencies are given theoretically.The pump efficiency analogies and pumping system efficiency analogies are discussed.Various formulas for converting pump efficiency are evaluated and discussed.A new conversion method for efficiency coefficient and a new pump efficiency formula are derived.The formula and methods are useful to differentiate and evaluate the reliability of the pump characteristics and are instructional for developing new high efficient pumps.The formula derived from the centrifugal pump(the volute casing mixed flow pump) and the vertical axial flow pump(the vertical mixed flow pump) are also applicable to the pump system,of any size and any other parameters.The study gives a universal formula for the design of pumps and pump systems.
[1] Camerer R.Vorlesungen uber wasserkraftmaschinen[M].Znd ed Leipzig Und Berlin,1924:225[2] 蒋履祥.水泵性能换算方法的探讨[J].河海大学学报(自然科学版),1989,17(zk):70-74[3] 张仁田,张平易,阎文立.大型泵站系统性能参数的换算方法[J].农业机械学报,1999,30(2):49-53[4] Schlichting H.Boundary layer theory[M].New York:McGraw-Hill,Inc,1960:502[5] 刘大恺,水轮机.水轮机[M].北京:中国水利水电出版社,1997:72[6] 洛马金 A A,梁荣厚.离心泵与轴流泵[M].北京:机械工业出版社,1978[7] 尼尔 M J.摩擦学手册:摩擦磨损润滑[M].北京:机械工业出版社,1984[8] 斯捷潘诺夫 A J,徐行健.离心泵和轴流泵[M].北京:机械工业出版社,1980[9] 严登丰.泵站过流设施与截流闭锁装置[M].北京:中国水利水电出版社,2000[10] 白仑昌明,田原晴男.タ-ボ形ポンプの性能换算[A],1969:11-24[11] Davis C V.Handbook of applied hydraulics[M].New York:McGraw-Hill,Inc,1952:555-556[12] Pfleiderer C.Die kreiselpumpen für fltissigkeiten urd grase[M].New York:Springer-verlag,1961:168[13] Wislicenus G F.Fluid machanics of turbomachinery Ⅰ[M].New York:Dover Publication Inc,1965:54-57[14] Hutton S P.Component losses in kaplan turbines and the prediction of efficiency from model tests[M].New York:Institution of Mechanical Engineers,1954:743-746[15] .IEC 995-1991.用考虑比尺效应的水力机械模型验试验确定原型性能[S].[16] .JISB 8327-2002.利用模型泵测试泵性能的试验方法[S].[17] 郑玉春,何忠人,陈坚.大型水泵装置性能参数换算方法的探讨[J].水利学报,1995(10):47-52