11503 蒸気インジェクタ内水噴流の凝縮熱伝達機構に関する研究 : 噴流界面機構について(エネルギー供給と高効率利用,OS.10 エネルギー供給と高効率利用,学術講演)

概要

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Characteristics of a steam injector and steam condensation phenomena on the water jet surface in the steam injector were experimentally examined. It was visually observed that there were many large waves on the water jet surface. The waves showed the tendency to grow as those proceeded downstream. It was supposed that the direct steam condensation on to the water jet surface in the steam injector was mainly controlled by the radial heat transport in the water jet. The radial heat transport in the water jet was considerably more effective than that in the usual turbulent heat transport in a pipe. The velocity, length and height of the waves that seemed to be responsible for producing the considerably effective heat and momentum transport were correlated by using the data of these obtained in the present observation experiments. Heat transfer coefficients of the direct condensation of the jet surface in the steam injector were tentatively correlated using the wave characteristics data. The results showed good trend.
社団法人日本機械学会の論文
2008-03-13