二相二重管熱サイホン内の伝熱特性

概要

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An experimental study on the heat transfer coefficient and critical heat flux in two-phase double-tube thermosyphons was carried out using water, ethanol and R113 as the working liquids. The same experiment for a single-tube thermosyphon was also performed for comparison. The effects of the top-end shape of inner tubes on the heat transfer coefficient and the critical heat flux were investigated in detail. As a result, it was shown that the heat transfer coefficient was not significantly affected by the difference of the top-end shape, but the critical heat flux was very sensitive to the top-end shape of the inner tubes. For R113, the critical heat flux in the thermosyphon with the inner tube having a T- or flange-shape top-end, was about four times as large as that in the single-tube thermosyphon.
一般社団法人日本機械学会の論文
1990-12-25