Effect of twisted tape insert on heat transfer and pressure drop in horizontal evaporators for the flow of R-134a

M. A. Akhavan-Behabadi; Ravi Kumar; A. Mohammadpour; M. Jamali-Asthiani

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Effect of twisted tape insert on heat transfer and pressure drop in horizontal evaporators for the flow of R-134a

机译：扭曲的胶带插入物对水平蒸发器中R-134a流动的传热和压降的影响

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An experimental study has been carried out on the heat transfer enhancement and pressure drop characteristics in presence of twisted tape inserts, during flow boiling of R-134a, inside a horizontal evaporator. The test-evaporator was an electrically heated 1260 mm long copper tube with 7.5 mm inside diameter. The experiments were performed for plain flow and four tubes with twisted tapes of 6, 9, 12 and 15 twist ratios and four refrigerant mass velocities of 54, 85, 114 and 136 kg/s m{sup}2 for each tape. It has been found that the twisted tape inserts enhance the heat transfer coefficient on relatively higher pressure drop penalty, in comparison to that for the plain flow.

机译：在水平蒸发器内，在R-134a的流动沸腾过程中，在存在扭曲的带状插入物的情况下，已经进行了关于传热增强和压降特性的实验研究。测试蒸发器是电加热的1260毫米长的铜管，内径为7.5毫米。对于平流和四个具有扭曲比为6、9、12和15的扭曲带的管以及每个带的四个制冷剂质量速度分别为54、85、114和136 kg / s m {sup} 2的实验进行了实验。已经发现，与普通流动相比，扭曲的带状插入物以相对较高的压降损失来提高传热系数。

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来源
《International Journal of Refrigeration》 |2009年第5期|共9页
作者
M. A. Akhavan-Behabadi; Ravi Kumar; A. Mohammadpour; M. Jamali-Asthiani;
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原文格式 PDF
正文语种 eng
中图分类制冷理论;
关键词
Evaporator; Horizontal tube; Insert; Experiment; Boiling; R134a; Heat transfer; Pressure drop;

机译：蒸发器;水平管;插入;实验;沸腾;R134a;传热;压降;

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1. Effect of twisted tape insert on heat transfer and pressure drop in horizontal evaporators for the flow of R-134a [J] . M. A. Akhavan-Behabadi, Ravi Kumar, A. Mohammadpour, International Journal of Refrigeration . 2009,第5期

机译：扭曲的胶带插入物对水平蒸发器中R-134a流动的传热和压降的影响
2. Heat transfer and pressure drop in the horizontal double pipes with and without twisted tape insert [J] . Paisarn Naphon International Communications in Heat and Mass Transfer . 2006,第2期

机译：带和不带扭曲插入带的水平双管的传热和压降
3. Study of the flow characteristics, pressure drop and augmentation of heat performance in a horizontal pipe with and without twisted tape inserts [J] . Ahmed Ramadhan Al-Obaidi, Issa Chaer Case Studies in Thermal Engineering . 2020,第a期

机译：用扭曲胶带插入件水平管道流动特性，压降和增强热性能的研究
4. Augmentation of Heat Transfer and Pressure Drop Characteristics Inside a Double Pipe U-Tube Heat Exchanger by using Twisted Tape Inserts [C] . P. V. Durga Prasad, A. V. S. S. K. S. Gupta International Conference on Emerging Trends in Science, Engineering and Technology . 2012

机译：通过使用扭曲的胶带插入件通过使用双管U形管式热交换器中的传热和压降特性的增强
5. Heat transfer enhancement of intube flows in process heat exchangers by means of twisted-tape inserts. [D] . Manglik, Raj Mitra. 1991

机译：借助扭曲带插入件增强了过程热交换器中管内流动的传热。
6. Heat Transfer Enhancement of Laminar Nanofluids Flow in a Circular Tube Fitted with Parabolic-Cut Twisted Tape Inserts [O] . Sami D. Salman, Abdul Amir H. Kadhum, Mohd S. Takriff, -1

机译：层状纳米流体在装有抛物线切割扭曲带插入件的圆管中的传热增强
7. Heat transfer and pressure drop in the transitional flow regime for a smooth circular tube with twisted tape inserts and a square-edged inlet [O] . J.P. Meyer, S.M. Abolarin 2018

机译：具有扭曲带插入件的光滑圆管的过渡流程中的传热和压降和压力下降和方形边缘入口
8. HEAT TRANSFER, BURNOUT, AND PRESSURE DROP FOR WATER IN SWIRL FLOW THROUGH TUBES WITH INTERNAL TWISTED TAPES [R] . W. R. Gambill, R. D. Bundy, R. W. Wansbrough 1960

机译：通过带有内部扭曲带的管子在旋流中进行热量传递，燃烧和压力下降

Effect of twisted tape insert on heat transfer and pressure drop in horizontal evaporators for the flow of R-134a

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