NDLI: Boiling helium heat transfer characteristics in narrow cooling channel

Content Provider	IEEE Xplore Digital Library
Author	Nishi, M. Ando, T. Hiyama, T. Kato, T. Shimamoto, S.
Copyright Year	1965
Abstract	For design of a stable superconducting magnet with pool cooling method, the size of the cooling channel is one of the important factors to determine its overall current density. We measured the steady state boiling helium heat transfer characteristics in a 600 mm long vertical cooling channel. The result shows that heat transfer characteristics in film boiling region do not become worse so far as the channel is not extremely narrow and rather becomes better adding some amount of bubbles in the channel, whereas that in nucleate boiling region becomes worse monotoneously and rapidly as the thickness of the channel decreases. From these results, it proves to be much better to choose the superconductor whose critical temperature is high to get the high current density stable magnets and also proves to be able to design stable pool-boiling magnets as large as toroidal coils for Tokamak machines of the next generation.
Sponsorship	IEEE Magnetics Society
Starting Page	390
Ending Page	393
Page Count	4
File Size	339821
File Format	PDF
ISSN	00189464
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1983-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Helium Heat transfer Cooling Superconducting magnets Current density Superconducting coils Steady-state Superconducting films High temperature superconductors Tokamaks
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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