不凝縮ガス存在下における受動的格納容器冷却系の冷却特性に関する基礎研究(NP2 軽水炉の設計・建設技術)

概要

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After TMI and Chernobyl accidents, many efforts have been made to enhance the nuclear safety with passive features. Among such passive features, the passive containment cooling system has been suggested. A condensation experiment in the presence of non-condensable gas in a vertical tube of the passive containment cooling system has been performed to evaluate the heat removal capacity in a post-accident containment. Condensation heat transfercoefficients on a vertically mounted smooth tube have been obtained for total pressure ranging from 0.2 to 0.5 Mpa(abs), air fraction ranging from 0.05 to 0.25 and inlet cooling water temperature ranging from 30 to 70℃. It was confirmed the increase in the air fraction cause the decrease in the heat transfer coefficients.
社団法人日本機械学会の論文
2004-06-22