Experiments and updated model for two phase frictional pressure drop inside minichannels

被引：69

作者：

Del Col, Davide ^{[1
]}

Bisetto, Alberto ^{[1
]}

Bortolato, Matteo ^{[1
]}

Torresin, Daniele ^{[2
]}

Rossetto, Luisa ^{[1
]}

机构：

[1] Univ Padua, Dipartimento Ingn Ind, I-35131 Padua, Italy

[2] ABB Corp Res, CH-5405 Baden, Switzerland

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2013年 / 67卷

关键词：

Pressure drop; Minichannel; Two phase; Roughness; Friction factor; CONDENSATION HEAT-TRANSFER; FLOW; INTERMITTENT; REFRIGERANTS;

D O I：

10.1016/j.ijheatmasstransfer.2013.07.093

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The objective of this work is to investigate frictional pressure drop during adiabatic liquid-vapor flow inside minichannels. New experimental pressure drop data, relative to two-phase flow inside circular and noncircular horizontal channels with hydraulic diameters ranging from 0.96 mm to 2 mm, is presented. By analyzing this data the present authors updated the two-phase frictional pressure drop model presented by Cavallini et al. (2009) [16,17], developing a new equation to calculate the effects of surface roughness on the frictional pressure drop as a function of the liquid-only Reynolds number. The present updated model is validated against experimental data and compared with other available correlations. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：326 / 337

页数：12

共 35 条

[1] Breakdown of laminar pipe flow into transitional intermittency and subsequent attainment of fully developed intermittent or turbulent flow [J].