Heat transfer through subcooled He I layer from distributed heat source in a pressurized He II channel |
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Authors: | H Kobayashi Y Fujimura T Murata M Sakata |
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Affiliation: | Atomic Energy Research Institute, Ninon University, 1-8 Kanda Surugadai, Chiyodaku, Tokyo 101, Japan |
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Abstract: | The subcooled He I layer, in contact with a large heated surface in a channel filled with the pressurized superfluid He II (He IIp), expands the non-boiling region above the Kapitza region up to qn, above which nucleate boiling sets in. As the bath temperature decreases, qn is increased more rapidly than qλ at which the superfluidity is broken at the centre of the heated surface. The value of qn is increased as the channel gap increases, and is independent of the channel orientation as well as qλ. Metastabilization of superconducting coils may be enhanced by taking the non-boiling limit qn into account. |
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Keywords: | superfluid helium (B) subcooled He I (B) heat transfer (C) metastabilization (F) |
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