Effect of gravity and noncondensable gas levels on condensation in variable conductance heat pipe

Le résumé fourni par la source

An experimental and analytical study was conducted to examine the flowfield behavior of a vapor-noncondensable gas mixture and its effect on heat transfer rate in the condenser of a variable conductance heat pipe (VCHP) or thermosyphon. Detailed temperature distributions and heat transfer rate were measured, and a flowfield visualization was made using a laser holographic interferometer. In order to investigate the dominant physical parameters in the flowfield, a numerical simulation was performed. It was found that the gravity force and levels of noncondensabl e gas contained have a strong effect on the location and the profile of an interfacial layer. The proposal of the formation of a clear diffusion front layer in the condenser would lead to an erroneous interpretation of thermofluid dynamic behavior of VCHPs for terrestrial use or ground-based testing.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.