冷却源で囲まれたプール状態のフロンR-113のサブクール沸騰熱伝達の研究 : 第1報,単相自然対流と核沸騰の熱伝達特性

概要

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The subcooled nucleate boiling heat transfer was investigated in the confined space of a closed vessel surrounded by a cooling jacket. Characteristics of the heat transfer in the space exist in a radial heat removal from a long vertical heat source with a high subcooled condition. A wall temperature drop in a high heat flux range, which indicated a boiling hysteresis, was encountered due to a transition in the boiling regime from discrete to large coalesced bubbles. A single phase natural convection in this space could be predicted by the previous correlations. Nucleate boiling was affected by subcooling in a lower heat flux region, and in a higher heat flux region, the heat transfer rate decreased due to large coalesced bubbles, the heat transfer could not be correlated by a boiling curve. A correlation between Nusselt and Rayleigh numbers is presented for the nucleate boiling heat transfer in this study.
一般社団法人日本機械学会の論文
1989-07-25