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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Exergy analysis of centered water nozzle steam-water injector
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Exergy analysis of centered water nozzle steam-water injector

机译：居中水喷嘴蒸汽喷射器的漏极分析

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摘要

A steam-water injector (SI), which is a passive jet pump, has been widely used in various industries. In the present work, exergy analysis models of a centered water nozzle SI were developed based on experiments to evaluate the performance of SI. The thermodynamic perfect degree of SI was found to be not so bad, and exergy efficiency was within the range of 18%-45%. In general, SI is used to work as a pump. However, exergy analysis can only evaluate the thermodynamic perfect degree of SI, but cannot evaluate its lifting-pressure performance. Therefore, thermo-mechanical exergy was divided into temperature-based exergy and pressure-based exergy in the present work, and the pressure-based exergy analysis was introduced. Such analysis was determined to be more reasonable than exergy analysis for a passive jet pump and helpful for achieving optimal SI design. Moreover, the effects of physical and geometric parameters on exergy efficiency and pressure-based exergy efficiency were investigated experimentally, and several optimal values for these geometric parameters were found. Finally, the distributions of exergy losses in separate parts of SI, particularly inevitable exergy losses, were evaluated. These analyses will be helpful in eliminating the effects of inevitable factors and in identifying the key factor, thereby considerably improving SI performance.
机译：作为无源喷射泵的蒸汽喷射器（Si）已广泛用于各种行业。在本作的工作中，基于实验开发了以中心的水喷嘴SI的Deerteny分析模型，以评估Si的性能。发现热力学的完美程度没有那么糟糕，高度效率在18％-45％的范围内。通常，Si用于用作泵。然而，Deergy分析只能评估热力学的SI，但无法评估其升降压力性能。因此，在本作中，热机械驱动分为基于温度的漏洞和基于压力的漏洞，并引入了基于压力的Deerteny分析。确定这种分析比被动喷射泵的Deervent分析更合理，并且有助于实现最佳的Si设计。此外，实验研究了物理和几何参数对电易效率和基于压力的漏洞效率的影响，并发现了这些几何参数的几个最佳值。最后，评估了Si的独立部分，特别是不可避免的漏洞损失的出境损失的分布。这些分析将有助于消除不可避免的因素的影响和识别关键因素，从而大大提高了SI性能。

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