Correlation of two-phase friction for refrigerants in small-diameter tubes

被引：304

作者：

Zhang, M

Webb, RL

机构：

[1] Penn State Univ, Coll Engn, Dept Engn Mech, University Pk, PA 16802 USA

[2] Thermo King Corp, Minneapolis, MN 55420 USA

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2001年 / 25卷 / 3-4期

关键词：

two-phase; pressure drop; correlation; refrigerant; micro-channel;

D O I：

10.1016/S0894-1777(01)00066-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Single-phase and adiabatic two-phase flow pressure drop were measured for R-134A, R-22 and R-404A flowing in a multi-port extruded aluminum tube with hydraulic diameter of 2.13 mm, and in two copper tubes having inside diameters of 6.25 and 3.25 mm, respectively. The single-phase friction factor was predicted within +/-10% using the Blasius friction correlation. The Friedel correlation did not predict the two-phase data accurately, especially for high reduced pressure. Using the data taken in the present and in a previous study, a new correlation for two-phase friction pressure drop in small diameter tubes was developed by modifying the Friedel correlation. The new correlation predicts 119 data points with a mean deviation of 11.5%. (C) 2001 Elsevier Science Inc. All rights reserved.

引用

页码：131 / 139

页数：9

共 23 条

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