Experimental investigation of in-tube condensation in microgravity

被引：21

作者：

Azzolin, Marco ^{[1
]}

Bortolin, Stefano ^{[1
]}

Lan Phuong Le Nguyen ^{[1
,2
]}

Lavieille, Pascal ^{[2
]}

Glushchuk, Andrey ^{[3
]}

Queeckers, Patrick ^{[3
]}

Miscevic, Marc ^{[2
]}

Iorio, Carlo Saverio ^{[3
]}

Del Col, Davide ^{[1
]}

机构：

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

[2] Univ Paul Sabatier, Lab Plasma & Convers Energie, 118 Route Narbonne,Bat3R1, F-31062 Toulouse 09, France

[3] Univ Libre Bruxelles, Micrograv Res Ctr, Ave F Roosevelt 50,CP 165-62, B-1050 Brussels, Belgium

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2018年 / 96卷

关键词：

Convective condensation; Microgravity; Heat transfer coefficient; Flow pattern visualization; HFE-7000; HEAT-TRANSFER; PRESSURE-DROP; FLOW; MINICHANNEL;

D O I：

10.1016/j.icheatmasstransfer.2018.05.013

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This work is aimed at studying the effect of gravity when convective condensation occurs inside a small diameter channel. An experimental apparatus has been specifically designed to perform microgravity experiments during the 62nd ESA Parabolic Flight Campaign. Convective condensation heat transfer tests have been carried out at mass velocity between 70 kg m(-2) S-1 and 170 kg m(-2) S-1 using Hydro-FluoroEther HFE-7000 (1-methoxyheptafluoropropane) as the working fluid in a circular cross section channel with an internal diameter equal to 3.4 mm. The data of heat transfer coefficient and the flow pattern visualizations show that, when gravity acts perpendicular to the channel flow, it has a beneficial effect on the heat transfer coefficient by acting on the liquid distribution along the channel perimeter. In microgravity conditions this mechanism leads to a penalization which is proportional to the mass velocity.

引用

页码：69 / 79

页数：11

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