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一、引言无论是从离心泵的科研、科学管理,还是从节能降耗等方面,真实准确地测量离心泵的效率在经济上和技术上都有着重大的意义。一般来说,测量离心泵的效率有两种方法:一种方法是常规法,即通过测量离心泵的流量、压力差、离心泵轴功率的方法计算出离心泵的效率;另一种方法是热力学方法,即通过测
I. Introduction It is economically and technically significant to measure truly and accurately the efficiency of a centrifugal pump, not only from the scientific research and scientific management of centrifugal pumps, but also from aspects of energy saving and consumption reduction. In general, there are two ways to measure the efficiency of a centrifugal pump: one is the conventional method of calculating the efficiency of a centrifugal pump by measuring the centrifugal pump flow rate, pressure difference, and centrifugal pump shaft power; the other is Thermodynamic method, that is, by measuring