Numerical simulation of flow and cooling heat transfer of supercritical pressure refrigerants in chevron-type plate heat exchanger

Kizuku Kurose; Naoto Watanabe; Kazushi Miyata; Hideo Mori; Yoshinori Hamamoto; Shuichi Umezawa

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Numerical simulation of flow and cooling heat transfer of supercritical pressure refrigerants in chevron-type plate heat exchanger

机译：空心型板换热器超临界压力制冷剂流量和冷却热传递的数值模拟

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In industrial fields, heat sources exceeding 130°C are necessitated; hence, the development of industrial high-temperature heat pump systems is anticipated. For the heat release process in such heat pump systems, the use of a plate heat exchanger (PHE), in which high-pressure working refrigerant flows, is examined. In this study, to predict the cooling heat transfer coefficient and pressure drop of supercritical pressure refrigerants flowing in a chevron-type PHE, a computational fluid dynamics model is developed. HFC134a and HFO1234ze(E) are selected as the working refrigerants. Calculations are performed by changing the inlet fluid enthalpy under three reduced pressure conditions from 1.01 to 1.21 and two mass flow rate conditions. The heat transfer coefficient and pressure drop obtained from the simulation reproduced the experimental results well, including the effects of pressure and mass velocity. Therefore, the present model can be applied to existing and new refrigerants if their physical properties are available. Furthermore, it can be used to optimize the plate shape of chevron-type PHEs. Finally, based on the simulation results, the characteristics of the flow behavior and heat transfer of refrigerants in the PHE are discussed.

机译：在工业领域，需要超过130°C的热源;因此，预期了工业高温热泵系统的发展。对于这种热泵系统中的热释放过程，检查板式热交换器（PHE），其中检查高压工作制冷剂流动。在本研究中，为了预测流动在脚轮型PHE中流动的超临界压力制冷剂的冷却传热系数和压降，开发了一种计算流体动力学模型。 HFC134A和HFO1234ZE（E）被选为工作制冷剂。通过在从1.01至1.21和两个质量流量条件下改变在三个减压条件下的入口流体焓和两个质量流量条件来进行计算。从模拟中获得的传热系数和压降再现实验结果良好，包括压力和质量速度的影响。因此，如果可以使用它们的物理性质，本模型可以应用于现有的和新的制冷剂。此外，它可用于优化人脚轮型pHE的板状。最后，基于模拟结果，讨论了PHE中的制冷剂的流动性能和传热的特征。

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来源
《International Journal of Heat and Mass Transfer》 |2021年第12期|121758.1-121758.10|共10页
作者
Kizuku Kurose; Naoto Watanabe; Kazushi Miyata; Hideo Mori; Yoshinori Hamamoto; Shuichi Umezawa;
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作者单位

Department of Mechanical Engineering Faculty of Science and Technology Tokyo University of Science. 2641 Yamazaki Noda-shi Chiba 278-8510 Japan;

Department of Mechanical Engineering Graduate school Kyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan;

Department of Mechanical Engineering Faculty of Engineering Fukuoka University 8-19-1 Nanakuma Jonan-ku Fukuoka. 814-0180 Japan;

Department of Mechanical Engineering Kyushu University 744 Motooka Nishi-ku Fukuoka 819-0395. Japan;

Department of Mechanical Engineering Kyushu University 744 Motooka Nishi-ku Fukuoka 819-0395. Japan;

TEPCO Research Institute Tokyo Electric Power Company Holdings 4-1 Egasaki-cho Tsurumi-ku Yokohama 230-8510 Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Computational fluid dynamics; Supercritical fluid; Chevron-type plate heat exchanger; Cooling heat transfer; Pressure drop;

机译：计算流体动力学;超临界流体;雪佛龙型换热器;冷热转移;压力下降;

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专利

1. Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle [J] . Kazushi MIYATA, Yuki YAMASAKI, Kizuku KUROSE, Mechanical Engineering Journal . 2020,第4期

机译：具有高脚轮角度的空心型板式换热器高压下冷却和冷凝热传递和制冷剂的压降
2. Heat Transfer and Pressure Loss Characteristics of Very Compact Heat Sinks; Heat exchangers; orced convection; heat transfer; heat sinks, plate fins; pin fins; cross-flow cooling; jet cooling, thermal conductance, pressure loss [J] . asahito Tasaka, Toshio Aihara, Chihiro Hayashi Heat Transfer Asian Research . 1999,第8期

机译：非常紧凑的散热器的传热和压力损失特性；热交换器；强制对流传播热量;散热器，散热片；脚鳍；横流冷却；射流冷却，导热，压力损失
3. Effect of the Chevron Angle on Cooling Heat Transfer Characteristics of Supercritical Pressure Fluids in Plate Heat Exchangers [J] . Miyata Kazushi, Mori Hideo, Taniguchi Takahiro, Heat Transfer Engineering . 2019,第9a12期

机译：人字形角度对板式换热器中超临界压力流体冷却传热特性的影响
4. Numerical simulation on characteristics of cooling heat transfer and pressure drop of supercritical pressure fluids flowing in a chevron-type plate heat exchanger [C] . Yuki YAMASAKI, Naoto WATANABE, Kazushi MIYATA, International Institute of Refrigeration;International congress of refrigeration . 2019

机译：跨越钢管式换热器流动的超临界压力流体冷却热传递和压降的数值模拟
5. Experimental Study on Heat Transfer and Flow Characteristics of Air Cooling through Cross-flow Microchannel Heat Exchanger. [D] . Dasgupta, Engr Sarbadaman. 2011

机译：横流微通道换热器空冷传热及流动特性的实验研究。
6. Analysis of Heat Transfers inside Counterflow Plate Heat Exchanger Augmented by an Auxiliary Fluid Flow [O] . A.-R. A. Khaled -1

机译：辅助流体增加对流板式换热器内部传热的分析
7. Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle [O] . Kazushi MIYATA, Yuki YAMASAKI, Kizuku KUROSE, 2020

机译：具有高脚轮角度的空心型板式换热器高压下冷却和冷凝热传递和制冷剂的压降

Numerical simulation of flow and cooling heat transfer of supercritical pressure refrigerants in chevron-type plate heat exchanger

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