Both definitions are nearly the same when losses from the pump to the surface are low.However,when comparing types of lift by efficiency comparisons,a good practice is to ensure that the calculated values use the same efficiency formula.It is suggested that all artificial lift installations have ...
A control station for verifying the uncertainty of a measuring device of the efficiency of a pump is mounted in an environment (1) thermally insulated and comprises a chamber (2) and a fluid inlet chamber (3 ) output of fluid connected to each other by a pipe (11) containing a throttle...
4) Efficiency of pump unit 水泵装置效率5) system efficiency 装置效率 1. This paper presents a formula of system efficiency of working fan and measures to save energ 对通风机在运转工况下的能量进行了分析,指出了能量损失的主要原因和节能的理论基础;提出了通风机在运转工况下的装置效率公式和节能...
of two factors that have the same units, it has no units. And since the numerator is useful work (or heat equivalent), conservation measures that alter the useful work produced do not improve the efficiency. The formula itself is as simple as it can be: merely a ratio. The complexities ...
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2.The analytical formulae about power,efficencyand ecological criterion of the irrevevsible heat engine cycle are derived.用有限时间热力学的方法分析了热漏、热阻和其它不可逆效应对一类定常流普适热机循环模型性能的影响,导出了由两个绝热过程、两个等热容加热过程以及两个等热容放热过程组成的循环的功率、效...
Research on efficient pump device with new type volute passage of large pumping station 蜗壳流道高效泵装置研究5) system efficiency 装置效率 1. This paper presents a formula of system efficiency of working fan and measures to save energ 对通风机在运转工况下的能量进行了分析,指出了能量损失的主...
1) volumetric efficiency of capacitor 电容器体积效率2) cubage efficiency 容积效率 1. This kind of pump can effectively solve the problem of low cubage efficiency, high degradation of viscosity of tri-material compound system, short service life for . 针对这种驱油技术研制了新型液力驱动无级调速...
A higher improvement rate (2%–3%) is estimated in case of combined-cycle applications. The best possible efficiency can be derived from ideal Brayton cycle (no losses) as per formula (1.3). (1.3)Brayton cycle thermal efficiency:ηB=1−1PRγ−1/γPR:pressure ratioγ=Cp/Cv,...
The analytical formulae about power,efficency and ecological criterion of the irrevevsible heat engine cycle are derived. 用有限时间热力学的方法分析了热漏、热阻和其它不可逆效应对一类定常流普适热机循环模型性能的影响,导出了由两个绝热过程、两个等热容加热过程以及两个等热容放热过程组成的循环的功率、...