Heat transfer performance during condensation of R-134a inside helicoidal tubes

被引：31

作者：

Al-Hajeri, M. H. ^{[1
]}

Kolulb, A. M. ^{[1
]}

Mosaad, M. ^{[1
]}

Al-Kulaib, S. ^{[1
]}

机构：

[1] Coll Technol Studies, Dept Mech Power & Refrigerat Engn, Publ Author Appl Educ & Training, Kuwait, Kuwait

来源：

ENERGY CONVERSION AND MANAGEMENT | 2007年 / 48卷 / 08期

关键词：

condensation; CFC-134a; helicoidal tubes;

D O I：

10.1016/j.enconman.2007.03.003

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper reports an experimental investigation of condensation heat transfer and pressure drop of an ozone friendly refrigerant, R-134a, inside a helical tube for climatic conditioning of hot regions. This study concerns the condensation of R-134a flowing through annular helical tubes with different operating refrigerant saturated temperatures. The average pressure drop is measured and compared with data from relevant literature. The measurements of R-134a were performed on mass flow flux ranges from 50 to 680 kg/m(2) s. The study provides experimental data that could be used for the design and development of more efficient condensers for refrigeration and air conditioning (A/C) systems working with the same refrigerant. (C) 2007 Elsevier Ltd. All rialits reserved.

引用

页码：2309 / 2315

页数：7

共 14 条

[1] Heat transfer in-tube condensation of a zeotropic mixture of HFC23/HFC 134a in a horizontal smooth tube [J].