In this paper, we show that the overall efficiency equations must be developed from an energy balance and show that the simple multiplication of mechanical and volumetric efficiencies can potentially lead to inaccurate results. We then obtain a generalised equation relating the overall efficiency to ...
Based on scientific studies and evaluations of collected data, a mathematical equation was developed relating MEI and corresponding minimum efficiency values. The value of a constant C takes account of special attributes (pump type, nominal speed) and depends on the value of MEI. For the ...
According to the static and running parameters of rod pumping wells, the methods of simulating dynamometer cards of the polished rod and pump on the basis of wave equation were setup. On the basis of the simulated cards, the model of simulating system efficiency of rod pumping wells was setup...
美 英 un.低效率 网络效率低的 英汉 网络释义 un. 1. 低效率 释义: 全部,低效率,效率低的
byEquation (3-63). Typically, this loss is very low, in the order of magnitude of a few mA/cm2, and therefore it affects the fuel cell efficiency only at verylow current densities(as shown inFigure 3-14). The fuel cell efficiency is then a product ofvoltage efficiencyandcurrent ...
An empirical equation was fitted to the data in the form of degradation efficiency as a function of the three independent variables. A close match was ... DJ Mckay,JS Morse - 《Hazardous Waste & Hazardous Materials》 被引量: 2发表: 1995年 Lasing efficiency and tuning range of lasers with...
Currently, the predominant part (about 95 %) of all the Russian diamonds is mined at ... N. Ovchinnikov - Occupational Safety in Industry 被引量: 0发表: 2022年 Quantification of soil water balance components based on continuous soil moisture measurement and the Richards equation in an ...
The Derivation of Efficiency Equation of the Prototype of Pico Wind Turbine Produces the Electricity This research has purposed to derive efficiency equation of the prototype of pico wind turbine produces the electricity (PPWTPE). By using a ventilating fa... S Jugsujinda,P Jugsujinda,T Seetawan...
The collection of carrier probability affects the QE of the device as given by following equation, QE=h∗c∗Isce∗λ∗Pin∗100 h- Planck’s constant, c- is the speed of light; e is the electron charge, Pin- incident power, λ- Wavelength (nm). Another factor similar to QE ...
Equation (24) models several experimental results such as those reported in [39]. In gallium arsenide, the surface recombination velocity is very high (of the order of 106 cm/s). The deposition of a thin layer of GaAlAs, however, reduces the recombination velocity at the interface to 10–...