Research progress on optimizing two-phase refrigerant distribution and boiling heat transfer in microchannel evaporators

被引：0
作者：
Tang Z. [1 ]
Guo W. [1 ]
Wu S. [1 ]
Zhao R. [1 ]
Huang D. [1 ]
机构：
[1] School of Energy and Power Engineering, Xi’an Jiaotong University, Shaanxi, Xi’an
来源：
Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 10期
关键词：
evaporation; gas-liquid flow; heat transfer; microchannel evaporator; two-phase distribution;
D O I：
10.11949/0438-1157.20230650
中图分类号：
学科分类号：
摘要：
Microchannel evaporators are widely used in refrigeration systems due to low charge capacity, high heat transfer performance, and low cost. Further improvement in the performance of microchannel evaporators helps to reduce refrigerant charge and increase the compactness of microchannel heat exchangers. The microchannel evaporator is mainly composed of a header and microchannel flat tubes. Optimizing the distribution of two-phase refrigerant in the header and enhancing the flow boiling inside the microchannel flat tubes can effectively improve the overall performance of the microchannel evaporator. First, the factors affecting the two-phase distribution in the header and the flow boiling characteristics in the microchannel flat tube were clarified. Then, measures to improve the two-phase refrigerant distribution scheme and enhance flow boiling are summarized. Finally, further prospects are given for methods to improve the performance of microchannel evaporators. © 2023 Chemical Industry Press. All rights reserved.
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页码：4020 / 4036
页数：16
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