This paper describes the flight verification of a nitrogen triple-point Cryogenic Thermal Storage Unit (CTSU), which flew as part of the CRYOTSU payload on STS-95 in late 1998. The CTSU flight unit is a dual-volume device with a 140 cc beryllium cryogenic heat exchanger and a 17 liter stainless steel ambient storage tank. During the flight, the CTSU demonstrated 3 kJ of energy storage at 63.15 K with variable heat loads from 5-9 W. An additional test was performed which demonstrated nitrogen's solid-solid transition at 35 K with 1 kJ of energy storage. The zero-g environment had no measurable impact on CTSU operation.


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    Title :

    Flight Verification of a Nitrogen Triple-Point Cryogenic Thermal Storage Unit (CTSU)


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    34th Intersociety Energy Conversion Engineering Conference ; 1999



    Publication date :

    1999-08-02




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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