Boiling heat transfer to subcooled nitrogen from thin wire in narrow space

Y. Takata, H. Kubota, T. Ito

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Boiling heat transfer characteristic of liquid nitrogen was investigated to obtain the basic information on cooling design of high-TC superconducting transformer which is cooled by subcooled nitrogen to avoid bubble formation. Thin wire of platinum-30%/rodium in diameter of 50μm was used as heater and thermometer. The wire was covered outside with acrylic tube to simulate the practical winding condition and we examined the effect of space restriction on boiling heat transfer characteristics. The subcooling of nitrogen tested was between 0 and 10.4K. The results show that the CHF and MHF increase considerably with the degree of subcooling.

Original languageEnglish
Title of host publicationHeat Transfer
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages199-204
Number of pages6
ISBN (Print)0791836347, 9780791836347
DOIs
Publication statusPublished - Jan 1 2002

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume3

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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    Takata, Y., Kubota, H., & Ito, T. (2002). Boiling heat transfer to subcooled nitrogen from thin wire in narrow space. In Heat Transfer (pp. 199-204). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 3). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2002-39064