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首页> 外文期刊>International journal of nuclear desalination >Experimental Investigation Of The Effect Of Ejector Geometry On Its Performance
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Experimental Investigation Of The Effect Of Ejector Geometry On Its Performance

机译：喷射器几何形状对其性能影响的实验研究

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摘要

This paper describes the experimental investigation of the performance of the ejector used in desalination applications, using air as the working fluid. The aim of this study is to investigate experimentally the effect of the operating conditions and ejector geometry on the ejector performance. The effect of the relative position of the primary nozzle exit within the mixing chamber on the performance of the ejector is also investigated. The results show that using a convergent-divergent nozzle enhances the performance of the ejector. Also, the ejector performance is improved by decreasing the primary nozzle throat diameter and also by increasing the suction pressure. Moreover, the performance of the ejector is affected by the nozzle position, and the optimum position, which yields a maximum entrainment ratio for all nozzles, is at the inlet of the mixing chamber section of the ejector. As the constant area-mixing length to diameter ratio L/D increases, the entrainment ratio increases. And the increase in the entrainment becomes very small and can be negligible for L/D greater than 7.5. The entrainment ratio increases with increasing primary pressure, and the entrained flow reaches a maximum at a certain primary pressure. Beyond this value, the entrained flow will decrease.
机译：本文介绍了对脱盐应用中使用空气作为工作流体的喷射器性能的实验研究。这项研究的目的是通过实验研究操作条件和喷射器几何形状对喷射器性能的影响。还研究了主喷嘴出口在混合室内的相对位置对喷射器性能的影响。结果表明，使用收缩喷嘴可提高喷射器的性能。而且，通过减小主喷嘴喉部直径以及通过增加吸入压力来改善喷射器性能。此外，喷射器的性能受喷嘴位置的影响，并且最佳位置在喷射器的混合室部分的入口处处于最佳位置，该最佳位置对所有喷嘴产生最大夹带率。随着恒定的面积混合长度与直径之比L / D增加，夹带率增加。并且夹带的增加变得非常小，并且对于大于7.5的L / D可以忽略不计。夹带率随着初级压力的增加而增加，并且在一定的初级压力下，夹带的流量达到最大值。超过此值，夹带流量将减少。

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