Test of a cryogenic set-up for a 10 meter long liquid nitrogen cooled superconducting power cable

Chresten Træholt, Carsten Rasmussen, Anders Van Der Aa Kühle (fratrådt), Søren Krüger Olsen, Kim Høj Jensen, Ole Tønnesen

    Research output: Contribution to journalJournal articleResearch

    Abstract

    High temperature superconducting power cables may be cooled by a forced flow of sub-cooled liquid nitrogen. One way to do this is to circulate the liquid nitrogen (LN2) by means of a mechanical pump through the core of the cable and through a sub-cooler.Besides the cooling station, the cryogenics of a superconducting cable includes the thermal insulation of the cable, the current- and coolant feed-throughs and possibly dynamic vacuum control. Since feed-throughs represent major sources of heat in-leak to the cryogenic system it is important to optimise the design and the number of these in a superconducting cable. We report on our experimental set-up for testing a 10 meter long high temperature superconducting cable with a critical current of 3.2 kA at 77K. The set-up consists of a custom designed cable end termination, current lead, coolant feed-through, liquid nitrogen closed loop circulation system and a commercial vacuum insulated hose for thermal insulation. The system is designed to yield both electrical and thermal data.
    Original languageEnglish
    JournalAdvances in Cryogenic Engineering
    Volume45
    Publication statusPublished - 2000
    EventCEC/ICMC Conference - Montreal, Canada
    Duration: 12 Jul 199916 Jul 1999

    Conference

    ConferenceCEC/ICMC Conference
    CountryCanada
    CityMontreal
    Period12/07/199916/07/1999

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