Numerical evaluation of the range of performance deterioration in a multi-port mini-channel heat exchanger due to refrigerant mal-distribution in the header

被引：22

作者：

Lee, Won-Jong ^{[1
,2
]}

Lee, Hyoin ^{[1
]}

Jeong, Ji Hwan ^{[1
]}

机构：

[1] Pusan Natl Univ, Sch Mech Engn, Busan 46241, South Korea

[2] Korea Inst Ind Technol, Cheonan 31056, South Korea

来源：

APPLIED THERMAL ENGINEERING | 2021年 / 185卷

基金：

新加坡国家研究基金会;

关键词：

Multi-port mini-channel heat exchanger; Two-phase; Mal-distribution; Quantitative evaluation; Distribution correlation; 2-PHASE FLOW DISTRIBUTION; SIMULATION APPROACH; MODEL; DESIGN;

D O I：

10.1016/j.applthermaleng.2020.116429

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The performance of a multi-port mini-channel heat exchanger deteriorates when the phases of the working fluid in the header are mal-distributed. Quantitative evaluations of how the mal-distribution of a two-phase working fluid affects performance deterioration are still insufficient. Moreover, most previous two-phase mal-distribution studies have been conducted using experimental methods because analytical methods are particularly difficult. A computer program named M-Cube, which can calculate the flow distribution in a multi-port mini-channel heat exchanger, was used to numerically evaluate the range of performance deterioration in a multi-port mini-channel heat exchanger due to two-phase refrigerant mal-distribution by assuming the degree of phase distribution in the header. The results showed that the heat transfer rates in a condenser and an evaporator can be decreased by a maximum of approximately 5% and 63%, respectively, compared with the ideal uniform distribution case.

引用

页数：16

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