R32 and R410A condensation heat transfer coefficient and pressure drop within minichannel multiport tube. Experimental technique and measurements

被引：33

作者：

Lopez-Belchi, Alejandro ^{[1
]}

Illan-Gomez, Fernando ^{[2
]}

Garcia Cascales, Jose Ramon ^{[2
]}

Vera Garcia, Francisco ^{[2
]}

机构：

[1] Tech Univ Cartagena, Minist Def, Acad Gen Aire,Univ Ctr Def, Engn & Appl Technol Dept,Spanish Air Force Acad, Calle Coronel Lopez Pena S-N, Murcia 30720, Spain

[2] Univ Politecn Cartagena, Thermal & Fluids Engn Dept, Murcia 30202, Spain

来源：

APPLIED THERMAL ENGINEERING | 2016年 / 105卷

关键词：

Experimental; Measuring; Technique; Two-phase flows; Minichannels; R410A; R32; R134a; 2-PHASE FLOW; CHANNELS; R134A; R22; R152A;

D O I：

10.1016/j.applthermaleng.2016.05.143

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present paper reports the construction of an experimental installation to measure local condensing two-phase flow heat transfer coefficient and frictional pressure drop within mini-channel tubes, the validation measurements developed with R134a and the experimental measurements of heat transfer coefficient and frictional pressure drop made with R32 and R410A. This experimental work is carried out in a test apparatus which allows determining the local heat flux extracted from the condensing fluid. For this purpose, the wall temperature is measured along the test section in several points. The saturation temperature is determined from the saturation pressure, which is measured at the inlet and the outlet of the test channel. Experimental data of R32 and R410A are also compared with some predicting models widely accepted in the literature. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：118 / 131

页数：14

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