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- W2203562014 abstract "The importance of surface conditions of nucleate boiling is well recognized and it has been known that the heat transfer to boiling liquid is closely related to the bubble population density. The bubble population density should depend on various factors such as heat flux, surface roughness, surface contamination, properties of liquid, etc. In this paper the effect of surface conditions on heat transfer in nucleate boiling is treated. The experiments were carried out with distilled water boiler, on the horizontal heating surfaces, sintered with various bronze particle, under atmospheric pressure. In addition, experimental investigation for the polished bronze surface was performed. By studing a coefficient Xb defined by eq. (9), which represents the bubble foaming ability of heating surface, generalized fomula on the heat transfer in the nucleate boiling were expressed. The coefficient Xb, determined empirically, is not constant and indicates a major influence of the sintered metal surfaces on the △T, necessary to sustain nucleate boiling at any given heat flux. In this study, the main results are obtained as follows; (1) At low temperature difference, the coefficient Xb of sintered metal surface was found to be higher than the polished surface throughout the full range of experiments. (2) The optimum sintered structure showing the maximum coefficient Xb has been confirmed to exist and it is encountered when particle diameter is 256 μ." @default.
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- W2203562014 date "1976-10-01" @default.
- W2203562014 modified "2023-09-22" @default.
- W2203562014 title "[論文] 核沸騰熱傳達에 미치는 傳熱面表面條件의 影響" @default.
- W2203562014 hasPublicationYear "1976" @default.
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