膜沸騰熱伝達に関する研究 : 第1報, 大気圧の液体中における水平棒および細線

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  • Research on the Film Boiling Heat Transfer : 1st Report, Horizontal Rods and Wires in Liquids under Atmospheric Pressure
  • マク フットウ ネツ デンタツ ニ カンスル ケンキュウ 1

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Film boiling of water and CCl4 in a vessel under atmospheric pressure was experimentally studied by using SiC rods and nichrome wires heated by electricity. The heating surface was heated up to 1200°C and was up to 14 mm in diameter. In this first report are described the results obtained when the heated rods and wires were horizontally placed. Frederking's expression of the theory by Bromley indicates that the coefficient of heat transfer can be correlated by the equation as follows : [numerical formula] where M is a dimensionless number inversely proportional to the heat flux. It was found out by the authors' experiment for the extended range of surface temperatures and surface diameters that the effect of heat flux was represented not by M1/4 but M0 for thin wires and M1.0 for rods.

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