Influence of metal foam on heat transfer characteristics of refrigerant-oil mixture flow boiling inside circular tubes

被引：40

作者：

Zhu, Yu ^{[1
]}

Hu, Haitao ^{[1
]}

Ding, Guoliang ^{[1
]}

Sun, Shuo ^{[1
]}

Jing, Yaolong ^{[1
,2
]}

机构：

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

[2] Carrier Corp, Prod Mkt, Shanghai 200001, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2013年 / 50卷 / 01期

关键词：

Flow boiling; Flow pattern; Heat transfer; Metal foam; Oil; HORIZONTAL TUBES; THERMAL-ANALYSIS; 2-PHASE FLOW; PART II; EXCHANGERS;

D O I：

10.1016/j.applthermaleng.2012.06.045

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The influence of metal foam on heat transfer characteristics of refrigerant and oil mixture flow boiling inside circular tubes was experimentally investigated on two horizontal circular tubes filled with 5 PPI and 10 PPI copper foams, respectively. The experimental conditions include saturation pressure of 995 kPa, mass flux from 10 to 30 kg m(-2) s(-1), heat flux from 3.1 to 9.3 kW m(-2), inlet vapor quality from 0.175 to 0.775 and oil concentration from 0% to 5%. The experimental results reveal that metal foam enhances the flow boiling heat transfer coefficient of refrigerant by a maximum of 185%, while the enhancement effect of metal foam is weakened at oil presence conditions. A new correlation is developed, which can agree with 98% of the experimental data within a deviation of +/- 30%. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1246 / 1256

页数：11

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