微通道低温换热器流动传热性能

doi:10.13229/j.cnki.jdxbgxb20210490

摘要/Abstract

摘要：

基于微通道换热器占地小、换热效率高等优点和在微电子领域、工业冷藏、电动汽车空调等领域应用广泛的现状，建立了微通道低温换热器的物理模型和数学模型，并对模型进行了求解。针对水力直径小于1 mm的微通道低温换热器的流动换热性能，研究了在改变入口流速以及不同宽高比的情况下，对换热器沿程的阻力压降、壁面温度、通道出口流体温度、摩擦因数的影响。研究结果表明，不同宽高比对以上各种参数都有明显的影响。微通道压降随着流速的增大而增大，而且压降增大趋势逐渐加大。壁面温度、通道流体出口温度、摩擦因数等都随着流速的增大而减小，最后都是趋向于稳定。宽高比为4的通道的参数值比宽高比为1的各项参数值普遍偏大，宽高比对微通道换热器的换热性能有着较大的影响。

关键词: 动力工程, 工程热物理, 微通道, 入口流速, 宽高比, 低温换热器

Abstract:

Based on the perfomance of small volume and high heat exchange efficiency for the microchannel heat exchanger and widely use in the fields of microelectronics， industrial refrigeration， electric vehicle air conditioning and so on， the physical model and mathematical model of microchannel low temperature heat exchanger are established and solved in the paper. To reveal the flow and heat transfer performance of microchannel low-temperature heat exchanger with hydraulic diameter less than 1 mm， the effects of changing inlet velocity and different aspect ratio on the resistance pressure drop， wall temperature， channel outlet fluid temperature and friction coefficient of the heat exchanger are studied. The results show that the above parameters were obviously effected by different aspect ratios. The microchannel pressure drop increases with the increase of flow velocity， and the increasing trend of pressure drop increases. The wall temperature， channel fluid outlet temperature and friction coefficient decrease with the increase of flow velocity， and finally tend to be stable. The parameter values of the channel with aspect ratio of 4 are generally larger than those of the channel with aspect ratio of 1. The aspect ratio has a great impact on the heat transfer performance of the microchannel heat exchanger.

Key words: power engineering, engineering thermophysics, microchannel, inlet velocity, aspect ratio, low temperature heat exchanger

中图分类号:

TB61

徐振军,王浩,王银成,张诺,陈孟,李清清. 微通道低温换热器流动传热性能[J]. 吉林大学学报(工学版), 2022, 52(10): 2294-2299.

Zhen-jun XU,Hao WANG,Yin-cheng WANG,Nuo ZHANG,Meng CHEN,Qing-qing LI. Flow heat transfer performance of microchannel low temperature heat exchanger[J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(10): 2294-2299.

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参考文献 13

1	梁朋. 矩形微通道内的流动与压降特性研究[D]. 北京:北京交通大学机械与电子控制工程学院, 2017.
	Liang Peng. The characteristics of flow and pressure drop in rectangular microchannel[D]. Beijing: School of Mechanical, Electronic and Control Engineering,Beijing Jiaotong University, 2017.
2	王剑鹏, 秦四成, 杨立光, 等. 装载机液压系统的传热仿真分析[J].吉林大学学报: 工学版, 2016, 46(1): 153-158.
	Wang Jian-peng, Qin Si-cheng, Yang Li-guang, et al. Simulation analysis of heat transfer in the hydraulic system of loader[J]. Journal of Jilin University (Engineering and Technology Edition), 2016, 46(1): 153-158.
3	葛洋, 姜未汀. 微通道换热器的研究及应用现状[J]. 化工进展, 2016, 35(): 10-15.
	Ge Yang, Jiang Wei-ting. The research progress and application of the micro channel heat exchanger[J]. Chemical Industry and Engineering Progess, 2016, 35(Sup.1): 10-15.
4	刘英楠. 微通道换热器的数值模拟[D]. 大连:大连理工大学化工学院, 2016.
	Liu Ying-nan. The numerical simulation of micro-channel heat exchanger[D]. Dalian:School of Chemical Engineering,Dalian University of Technology, 2016.
5	吴秋瑜. 凹穴型微通道换热器结构设计与性能研究[D]. 广州:华南理工大学机械与汽车工程学院, 2017.
	Wu Qiu-yu. Structural design and study on performance offlow and heat transfer of complex microchannel heat exchanger with reentrant cavitives[D]. Guangzhou: School of Machanical & Automotive Engineering, South China University of Technology,2017.
6	范凌灏. 矩形微通道内流动传热特性的数值模拟及结构优化[D]. 济南:山东大学能源与动力工程学院, 2020.
	Fan Ling-hao. Numerical analysis and structural optimization of flow and heat transfer characteristics candidate in rectangular microchannels[D]. Jinan: School of Energy and Power Engineering,Shandong University, 2020.
7	盛伟, 刘鹏鹏, 丁国良. 微通道换热器结霜性能的试验研究[J]. 流体机械, 2017, 45(1): 60-65.
	Sheng Wei, Liu Peng-peng, Ding Guo-liang. Experimental research on frost performance of microchannel heat exchanger[J]. Fluid Machinery, 2017, 45(1): 60-65.
8	熊通, 晏刚, 樊超超, 等. 微通道换热器两相流分布研究现状与展望[J]. 制冷学报, 2021, 42(1): 23-35.
	Xiong Tong, Yan Gang, Fan Chao-chao, et al. Review on research status and prospects of two-phase flow distribution in microchannel heat exchanger[J]. Journal of Refrigeration, 2021, 42(1): 23-35.
9	巫江虹, 谢方, 刘超鹏, 等. 电动汽车热泵空调系统微通道换热器适应性研究[J]. 机械工程学报, 2012, 48(14): 141-147.
	Wu Jiang-hong, Xie Fang, Liu Chao-peng, et al. Adaptability research on micro-channel heat exchanger appued to heat pump air conditioning system for electrical vehicle[J]. Journal of Machanical Engineering, 2012, 48(14): 141-147.
10	张天一. 超临界二氧化碳微通道换热器优化分析研究[D]. 北京:华北电力大学核科学与工程学院, 2021.
	Zhang Tian-yi. Optimization analysis of supercritical carbon dioxide microchannel heat exchanger[D]. Beijing:School of Nuclear Science and Engineering,North China Electric Power University, 2021.
11	翟玉玲. 复杂结构微通道热沉流动可视化及传热过程热力学分析[D]. 北京:北京工业大学环境与能源学院, 2015.
	Zhai Yu-ling. Thermodynamic analysis of enhanced heat transfer process in microchannel heat sinks with complex structure[D]. Beijing: School of Environment and Energy,Beijing University of Technology, 2015.
12	白鹏飞, 汤勇, 陆龙生, 等. 以水为工质的铜基微通道热沉的流态可视化与传热特性[J]. 吉林大学学报: 工学版, 2010, 40(4): 959-964.
	Bai Peng-fei, Tang Yong, Lu Long-sheng, et al. Investigation of flow pattern visualization and heat transfer characteristics on a Cu-base micro-channel heat sink with water coolant[J]. Journal of Jilin University (Engineering and Technology Edition), 2010, 40(4): 959-964.
13	席雷, 徐亮, 高建民, 等. 厚壁矩形带肋通道内蒸汽流动及传热特性[J].吉林大学学报: 工学版, 2018, 48(3): 752-759.
	Xi Lei, Xu Liang, Gao Jian-min, et al. Flow and heat transfer characteristics of steam in thick-wall rectangular ribbed channel[J]. Journal of Jilin University (Engineering and Technology Edition), 2018, 48(3): 752-759.

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参数	正方形截面	长方形截面
长×宽×高	40 mm×4 mm×1 mm	40 mm×4 mm×1 mm
通道数	5	3
微通道宽	0.5 mm	0.25 mm
微通道长	0.5 mm	1 mm