Heat transfer coefficient and pressure drop during refrigerant R-134a condensation in a plate heat exchanger

被引：0
作者：
Emila M. Djordjević
Stephan Kabelac
Slobodan P. Šerbanović
机构：
[1] University of Belgrade,Department of Chemical Engineering, Faculty of Technology and Metallurgy
[2] Helmut Schmidt University of Federal Armed Forces,Institute for Thermodynamics
来源：
Chemical Papers | 2008年 / 62卷
关键词：
plate heat exchanger; condensation; R-134a; heat transfer coefficient; pressure drop;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The condensation heat transfer coefficient and the two-phase pressure drop of refrigerant R-134a in a vertical plate heat exchanger were investigated experimentally. The area of the plate was divided into several segments along the vertical axis. For each of the segments, local values of the heat transfer coefficient and frictional pressure drop were calculated and presented as a function of the mean vapor quality in the segment. Owing to the thermocouples installed along the plate surface, it was possible to determine the temperature distribution and vapor quality profile inside the plate. The influences of the mass flux and the heat flux on the heat transfer coefficient and the pressure drop were also taken into account and a comparison with previously published experimental data and literature correlations was carried out.
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页码：78 / 85
页数：7
相关论文
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