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Effect of orientation of the heat-release surface on heat transfer to liquid nitrogen

Research paper by M. I. Delov, K. V. Kutsenko, A. A. Lavrukhin

Indexed on: 23 Aug '14Published on: 23 Aug '14Published in: Bulletin of the Lebedev Physics Institute



Abstract

The heat transfer from the surface of high-temperature superconductors to liquid nitrogen is studied. The effect of the heat flux density and heat-release surface orientation in the gravitational field on heat exchange characteristics is studied. It is shown that the heat transfer coefficient in the region of developed bubble boiling on a double-side cooled tape has a minimum at tilt angles close to 45°. The relations describing the dependence of the heat transfer coefficient on the heat-release surface orientation are derived.