Experimental Study on Condensation heat transfer of Ethanol-Water Mixtures on a Vertical Mini-tube

摘要：

Experiments were carried out to investigate condensation of ethanol-water vapor mixtures on a vertical mini-tube with outer diameter of 1.032mm. The length, inter diameter of the tube was 110mm, 0.727mm, respectively. The tests were performed at a wide range of ethanol concentrations (Cv=0％, 1％, 2％, 5％) and varied velocity of vapor (Uv=2m/s, 4m/s,6m/s) and pressure (Pv=31.2kPa,47.4kPa,84.5kPa). With the change of the vapor-to-surface temperature difference, the heat transfer coefficients revealed nonlinear characteristics with the peak values under all ethanol mass fractions of vapor. The heat transfer coefficients decreased with increasing ethanol mass fraction of vapor.

关键词： Condensation Drop Heat transfer mini-tube

作者: Chen XiPing Yan JunJie Huang RongHai Liu JiPing

作者单位: State Key Laboratory of Multiphase Flow in Power Engineering,XianJiao long University, Xian City, 710049, P.R. China

会议类型: 国际会议

会议名称: The 7th International Symposium on Measurement Techniques for Multiphase Flows(第七届国际多相流测试技术会议)

会议地点: 天津

会议语种:英文

页码: 35-42

在线出版日期: 2011-09-17（万方平台首次上网日期，不代表论文的发表时间）