微通道换热器研究及应用进展  

Progress in Research and Application of Microchannel Heat Exchangers

作　　者：朱传辉[1] 李保国[1] 杨会芳[1] ZHU Chuan-hui;LI Bao-guo;YANG Hui-fang(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,China,Post Code:200093)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《热能动力工程》2020年第9期1-9,共9页Journal of Engineering for Thermal Energy and Power

基　　金：上海市教委科研创新项目(14ZZ133);上海市助推计划(ZB1307LG);上海市联盟计划(LM2018079)。

摘　　要：微通道换热器以换热效率高、加热速度快、可控性好、噪声低、运行稳定、承压能力好和节约成本等优点逐渐替代传统换热器。但微通道换热器在应用中还存着一些问题:作为蒸发器时出现结霜现象;制冷剂的分流不均匀;微通道内两相流动的换热机理和流动传热计算没有一致定论;制造方面没有统一的行业规范等。以上问题是制约微通道换热器推广应用的关键,本文综述了近年来该领域的研究进展,建议利用相变蓄热技术改善结霜状况;采用仿生学原理(如血管、肺泡等)设计微通道换热器集管,改善制冷剂分流不均匀问题。Microchannel heat exchangers have high heat exchange efficiency,fast heating speed,good controllability,low noise,stable operation and good pressure bearing capacity,and have been gradually replacing traditional heat exchangers due to their dost savings along with other advantages.However,there are still some problems in the application of microchannel heat exchangers.The most prominent ones are:frosting when used as an evaporator,uneven distribution of refrigerant,heat transfer mechanism and flow transmission of two-phase flow in microchannels,no consistent conclusion on thermal calculations,and no uniform industry norms in manufacturing.This is the key to restrict the popularization and application of microchannel heat exchangers.This paper summarizes the research progress in this field and the application of related products in recent years,in order to provide some reference for researchers and users.It is recommended to use phase change heat storage technology to improve frost formation,and adopt bionics principles(such as blood vessels,alveoli,etc.)to design micro-channel heat exchanger headers for improving the uneven refrigerant distribution.

关 键 词：微通道换热器 结霜 换热机理 传热计算 制冷剂分流 

分 类 号：TK172[动力工程及工程热物理—热能工程]