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The Wind-driven Regenerative Water-pump

机译：风力再生水泵

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摘要

Roto-dynamic pumps can offer attractive performance when coupled mechanically to wind rotors in shallow lift water pumping applications. However, the gearing ratio required in the transmission for such systems restricts their commercial acceptability. This problem can be reduced by selecting a pump with a very low specific speed, so that, for a particular flow and lift, the shaft need not rotate so fast. Therefore, a regenerative pump was designed and developed for wind powered water pumping applications. A semi-empirical approach was adopted for the design. Performance of the pump was evaluated under variable operating conditions. Power-speed characteristics of the pump at different pumping heads were established and superimposed on those of a suitable wind rotor, to identify the points of operation of the integrated rotor-pump system. With optimum gearing, the peak efficiency points of the rotor and the pump could be reasonably matched over a wide range of conditions. Operating speeds of the system at different wind speeds were estimated and then translated into discharge rates and overall system efficiency. The proposed wind pumping system, with the regenerative pump, performs better on shallow lifts than either wind-driven piston or centrifugal pumping systems.
机译：旋转动力泵在浅层提升水泵应用中与风轮机械耦合时可提供引人注目的性能。但是，这种系统的变速器所需的传动比限制了它们的商业可接受性。通过选择转速非常低的泵可以减少此问题，因此，对于特定的流量和升​​程，轴不必旋转得太快。因此，为风力水泵应用设计并开发了一种再生泵。设计采用了半经验方法。在可变的运行条件下评估了泵的性能。建立了泵在不同扬程下的功率速度特性，并将其叠加在合适的风轮上，以识别集成转子-泵系统的运行点。通过最佳的传动比，转子和泵的峰值效率点可以在很宽的条件范围内合理地匹配。估算了系统在不同风速下的运行速度，然后将其转化为排放率和整体系统效率。与风力驱动的活塞式或离心式泵送系统相比，所提出的带有再生泵的风泵系统在浅层提升时表现更好。

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