Centrifugal pump power calculation formula

Power generally refers to the number of work done by the object in a unit of time, that is, power is a physical quantity that describes how fast you work. A certain amount of work, the shorter the time, the greater the power value. Centrifugal pump, it is in operation because of various losses, so the centrifugal pump power calculation for the use and improvement of products is of great significance. Centrifugal pump centrifugal pump characteristic curve is the inherent characteristics of the pump itself, it has nothing to do with the external use. However, once the pump is arranged to work in a given piping system, its actual operation depends not only on the characteristics of the centrifugal pump itself but also on the operating characteristics of the piping. Therefore, to select and make good use of centrifugal pumps, we must also take into account the characteristics of the pipeline. Centrifugal pump in operation due to the existence of various losses, so that the effective pump head and flow were lower than the theoretical value, while the input pump power than the theoretical value is high. H______ pump effective pressure head, that is, the unit of liquid in the gravitational field from the pump to obtain the energy, m; Q ______ pump the actual flow, m3 / s; ρ ______ liquid density, kg / m3; Ne______ pump effective power Mechanical energy obtained from the pump unit of liquid, W. The effective power can be written as Ne = QHpg The power input by the motor to the centrifugal pump is called the pump shaft power, expressed in N. Effective power and shaft power ratio is defined as the total efficiency of the pump η, η = Ne / N According to the above analysis, we can understand that the centrifugal pump in the work prone to energy loss, how to improve the centrifugal pump power for efficient use of the product Significant. Each product has shortcomings, these disadvantages may lead to reduced performance of the product. At this point the power is a good test method, how to maximize the product power, the need for professionals to do more work and research. Related articles: Centrifugal pump classification and types Daquan Liaoning star pump debut Shanghai Fluid Exhibition multi-stage centrifugal pump cited