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首页> 外文期刊>Jordan Journal of Mechanical and Industrial Engineering >Cooling of Superheated Refrigerants Flowing Inside Mini and Micro Tubes, Study of Heat Transfer and Pressure Drop, CO2 Case Study
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Cooling of Superheated Refrigerants Flowing Inside Mini and Micro Tubes, Study of Heat Transfer and Pressure Drop, CO2 Case Study

机译：微型和微型管内流动的过热制冷剂的冷却，传热和压降的研究，CO2案例研究

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Superheated Carbon dioxide gas was subjected to a cooling process. Experimental investigation along with an analytical study was carried out in this work. This work is intended to be part of the super critical Gustav Lorentzen refrigeration cycle of CO2. Experimental and analytical works concentrated on heat transfer and pressure drop for single phase flow during gas cooling inside mini and micro tubes. Empirical correlations were formulated analytically for the coefficient of convectional heat transfer and for the pressure drop in the following forms: Nu = 0.24 (Re)~(0.53) (Pr)~(0.43) And Eu = 1.1*10~(-4) (ReD)~(-0.26) (L/D)~(1.06) Correlations were validated against some experimental results and compared to all experimental results and other literature correlations; an agreement of more than 90% was noticed. This work can enhance the calculations of heat flux and pressure drop of gases flow inside mini and micro tubes. It can also help in the design procedure of heat exchangers and cooling processes.
机译：使过热的二氧化碳气体经受冷却过程。在这项工作中进行了实验研究和分析研究。这项工作旨在成为超临界Gustav Lorentzen CO2制冷循环的一部分。实验和分析工作的重点是微型和微型管内气体冷却过程中单相流的传热和压降。对流换热系数和压降的解析关系式建立如下：Nu = 0.24（Re）〜（0.53）（Pr）〜（0.43）和Eu = 1.1 * 10〜（-4） （ReD）〜（-0.26）（L / D）〜（1.06）相对于某些实验结果进行了验证，并将其与所有实验结果和其他相关文献进行了比较;注意到超过90％的协议。这项工作可以增强对微型和微型管内气体流动的热通量和压降的计算。它还可以帮助设计热交换器和冷却过程。

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