publication . Research . 2001

Experimental study on void fraction of two-phase flow inside a micro-fin tube

Koyama, Shigeru; Chen, Yongchang; Kitano, Ryuji; Kuwahara, Ken;
Open Access English
  • Published: 01 Jan 2001 Journal: 九州大学機能物質科学研究所報告, volume 15, issue 1, pages 79-85 (issn: 0914-3793, Copyright policy)
  • Publisher: 九州大学機能物質科学研究所
Abstract
In this paper the void fraction and flow pattern of the two-phase flow in a micro-fin tube were investigated experimentally for a pure refrigerant HFC134a. The experiment was carried out at a pressure range of 0.6 and 1.2MPa with mass velocities of 90 and 180kg/m^2 s, in which the vapor quality varied from 0 to 1. The void fraction was measured by means of simultaneously closing valves of both sides of the test tube at adiabatic condition. Experimental results for the micro-fin tube were compared with previous correlations for smooth tube. It was found that experimental data of the micro-fin tube were lower than predicted results using correlations for smooth tu...
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Research . 2001
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