Experimental studies on condensation heat transfer of the moist air outside the horizontal circular pipe with a porous layer

Abstract

This paper presents the structure design of four kinds of circular pipes with porous layer and the experimental results of condensation heat transfer of the moist air outside the horizontal circular pipes. By comparison with the experiments on bare pipes, it is concluded that, the designed pipes not only have good condensation heat transfer performance, but also have the ability to collect and remove condensed liquid under zero gravity. They can be applied to the thermal control system for future large spacecraft.