Experiment on nucleate pool boiling in microgravity by using transparent heating surface - Analysis of surface heat transfer coefficients

C. Kubota, O. Kawanami, Y. Asada, Y. Wada, T. Nagayasu, Y. Shinmoto, H. Ohta, O. Kabov, P. Queeckers, S. Chikov, J. Straub

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Investigation of mechanisms in nucleate boiling under microgravity conditions is essential for the development of the cooling systems handling a large amount of waste heat. A transparent heating surface with multiple arrays of 88 thin film temperature sensors and mini-heaters was developed for the clarification of boiling heat transfer mechanisms in microgravity. To investigate gravity effects on the microlayer behaviors and corresponding local heat transfer coefficients, images of liquid-vapor behaviors underneath attached bubbles and local heat transfer data were simultaneously obtained in microgravity pool boiling. The present paper reports the analysis of the data measured during the ESA parabolic flight campaign. It was found that the liquid-vapor behaviors were strongly affected by the direction and the level of residual gravity. Various patterns of liquid-vapor behaviours and corresponding enhancement or deterioration of the heat transfer are observed.

Original languageEnglish
Article number012040
JournalJournal of Physics: Conference Series
Volume327
Issue number1
DOIs
Publication statusPublished - Jan 1 2011
Event4th International Symposium on Physical Sciences in Space, ISPS-4 - Bonn, Germany
Duration: Jul 11 2011Jul 15 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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