Study of Supercritical Helium Circulation Pump for a Forced-Flow Cooled Magnet Using CICC
A fusion reactor, such as International Thermonuclear Experimental Reactor, should require a large scale forced-flow cooled cable-in-conduit conductor magnet. Such a magnet is operated by forced-flow cooling with a large amount of supercritical helium. A cryogenic pump is effective and reasonable to achieve such a forced-flow cooling for the magnet. A thermodynamic study shows a merit for the cryogenic pump compared to a conventional helium system in which the helium refrigerator supplies supercritical helium through the Joule Thomson line if the adiabatic pump efficiency of the cryogenic pump is more than 60%. A technical base for developing a large scale cryogenic pump is already established through continuous cryogenic pump developing at Japan Atomic Energy Research Institute as reviewed in the paper.
KeywordsMass Flow Rate Centrifugal Pump International Thermonuclear Experimental Reactor1 Martensitic Stainless Steel Pump Head
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