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Development of 10 kA Current Leads Cooled by a Cryogenic Mixed-Refrigerant Cycle

Shabagin, Eugen; Grohmann, Steffen

Abstract (englisch):
Current leads used to supply electrical energy from a room-temperature power supply to a superconducting application represent a major thermal load and therefore largely determine the operating cost. This paper presents a concept to minimize the thermal load at the cold end by integrating the recuperative heat exchanger of a cryogenic mixed-refrigerant cycle (CMRC). A mixture of non-flammable components is used to absorb the distributed thermal load continuously over the entire temperature range. The paper describes the numerical model that consists of an electric model coupled with a thermal modelling framework, allowing the optimization of the mixture composition and the temperature profiles. Simulations yield a reduction of the thermal load at the cold end by 45 % compared to conventional conduction-cooled current leads.

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Verlagsausgabe §
DOI: 10.5445/IR/1000093955
Veröffentlicht am 25.04.2019
DOI: 10.1088/1757-899x/502/1/012138
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Thermodynamik und Kältetechnik (ITTK)
Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 1757-899X
KITopen-ID: 1000093955
HGF-Programm 37.06.02 (POF III, LK 01)
New Power Network Technology
Erschienen in IOP conference series / Materials science and engineering
Band 502
Heft 1
Seiten 012138
Vorab online veröffentlicht am 15.04.2019
Nachgewiesen in Scopus
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