Titre du document / Document title
Thermal performance and flow instabilities in a multi-channel, helium-cooled, porous metal divertor module
Auteur(s) / Author(s)
YOUCHISON Dennis L. (1) ;
NORTH Mark T. (2) ;
LINDEMUTH James E. (2) ;
MCDONALD Jimmie M. (1) ;
LUTZ Thomas J. (1) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Sandia National Laboratories, Fusion Technology Department, P.O. Box 5860, MS-1129, Albuquerque, NM 87185, ETATS-UNIS
(2) Thermacore Inc., Lancaster, PA 17601, ETATS-UNIS
Résumé / Abstract
Pressurized helium is under consideration for cooling Langmuir probes and plasma facing components of next generation fusion experiments. Helium is non-corrosive, does not activate, separated easily from tritium, vacuum compatible, and undergoes no phase transformations. Recently, the thermal performance of a bare-copper, dual-channel, helium-cooled, porous metal divertor mock-up, designed and fabricated by Thermacore Inc., was evaluated on Sandia's 30 kW Electron Beam Test System equipped with a closed helium flow loop. The module uses short circumferential flow paths to minimize pressure drops and pumping requirements while achieving optimal thermal performance by providing a very large effective surface area. The module was tested under both uniform and non-uniform heat loads to assess the effects of mass flow instabilities. It survived a maximum absorbed heat flux of 29.5 MW/m
2on a 2-cm
2 area. Results on the power sharing between the two channels is presented and compared with that of a previous design. These experimental results coupled with appropriate modeling provide insight on flow instabilities in multi-channel, helium-cooled heat exchangers.
Revue / Journal Title
Fusion engineering and design
ISSN
0920-3796
CODEN FEDEEE
Source / Source
Congrès
ISFNT-5 International Symposium on Fusion Nuclear Technology N
o5, Rome
, ITALIE
(19/09/1999)
2000, vol. 49-50 (996 p.) (9 ref.), pp. 407-415
Langue / Language
Anglais
Editeur / Publisher
Elsevier, Amsterdam, PAYS-BAS
(1987)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 12262 F, 35400009373672.0540
Nº notice refdoc (ud4) : 849696
