Boiling Heat Transfer and Peak Nucleate Boiling Flux in Liquid Helium
This study is part of an overall space simulation research program, In several of the experimental studies, it is necessary to maintain the walls of a space simulation chamber at about 3°K, even when the solar simulation test is on and the sample is radiating to the walls, Under these conditions, it is necessary to cool the surfaces with liquid helium and to be able to predict the heat transfer properties of the liquid-wall system. The object of this study was to determine the relation between the heat flux and the temperature difference for heated copper cylinders in liquid helium, In addition, the effect of surface finish was investigated, The study was limited to natural convection, nucleate boiling, and to the determination of the critical heat flux.
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