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

Yasuyuki Takata, H. Kubota, T. Ito

Research output: Contribution to journalConference article

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
Pages (from-to)199-204
Number of pages6
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume372
Issue number3
DOIs
Publication statusPublished - Dec 1 2002
Event2002 ASME International Mechanical Engineering Congress and Exposition - New Orleans, LA, United States
Duration: Nov 17 2002Nov 22 2002

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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