Transient Heat Transfer for a Water Drop Impinging on a Heated Surface : 1st Report, Effects of Drop Subcooling on the Liquid-Solid Contact State

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概要

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• This paper deals with transient heat transfer for a water drop impinging on a heated surface in the surface temperature range from the maximum boiling rate point to the non-wetting region. The boiling curves were obtained by analyzing the transient temperature variation inside the heated surface taking account of the time variation of the area covered by the drop. Comparing the boiling curves obtained in this way with that for pool boiling, the heat flux in both cases increases with an increasing subcooling, while the heat flux in the present case is several times higher than that for pool boiling. It was proved that the maximum heat flux point of the boiling curve was located on an extension of the nucleate pool boiling curve and that the boiling heat transfer for a drop on the heated surface was classified into four types according to the degree of subcooling and the heated surface temperature.

• 一般社団法人日本機械学会の論文

著者

• INADA Shigeaki

  Dept. of Mech. Eng. Gunma Univ.

• MIYASAKA Yoshiki

  Dept. of Mech. Eng. Gunma Univ.

• NISHIDA Kooji

  Student of Graduate School and Technology Kobe Univ.

関連論文

• D108 VISUALIZATION OF THE MICRO-BUBBLE GENERATED IN THE DROPLET IMPINGING ON THE HEATED QUARTZ SURFACE(Multiphase flow measurement)
• Disappearance of a Detached Vapor Mass in Subcooled Water : Fluids Engineering, Heat Transfer, Combustion, Power, Thermophysical Properties,
• Study of Boiling Characteristic Curves in Subcooled Pool Boiling of Water (4th Report, The Mechanism of Heat Transfer in Transition Boiling)
• A Study on the Laminar-flow Heat Transfer Between a Two-dimensional Water Jet and a Flat Surface with Constant Heat Flux
• Transient Heat Transfer for a Water Drop Impinging on a Heated Surface : 1st Report, Effects of Drop Subcooling on the Liquid-Solid Contact State

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