Numerical model of two-phase refrigerant flow distribution in a plate evaporator with distributors

被引：17

作者：

Hu, Haitao ^{[1
]}

Zhang, Ruxu ^{[2
]}

Zhuang, Dawei ^{[1
]}

Ding, Guoliang ^{[1
]}

Wei, Wenjian ^{[3
]}

Xiang, Liang ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China

[2] Shanghai Elect Power Generat Engn Co, Shanghai 201199, Peoples R China

[3] Danfoss Heat Exchanger China R&D Ctr, Jiaxing 314300, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2015年 / 75卷

关键词：

Distributor; Flow distribution; Numerical model; Plate heat exchanger; Two-phase refrigerant; VOID FRACTION MEASUREMENT; HORIZONTAL ANNULAR-FLOW; HEAT-EXCHANGERS; PRESSURE-DROP; PARALLEL CHANNELS; STEAM CONDENSATION; TRANSIENT-RESPONSE; MALDISTRIBUTION; VISUALIZATION; SPLIT;

D O I：

10.1016/j.applthermaleng.2014.09.064

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The distribution of two-phase refrigerant in the plate heat exchanger has a significant influence on the heat exchanger performance. In order to accurately predict the flow distribution of two-phase refrigerant in a plate evaporator, a numerical model was developed in the present study. In the model, the phase split coefficients for two-phase refrigerant in the distributor were predicted based on the modification of T-junction model, and the empirical factor was correlated with the experimental data; the pressure drops for two-phase refrigerant in the channel, distributor and elbows were predicted by reflecting the structure influences on pressure drop. The model validation shows that, the model agrees well with the experimental data. Based on the proposed model, the influences of distributor angle on the two-phase refrigerant flow distribution in plate heat exchangers were analyzed, and the optimal distributor angle was recommended. (C) 2014 Published by Elsevier Ltd.

引用

页码：167 / 176

页数：10

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