Improved Joule-Thomson cooler maintains nearly constant temperature. Absolute-pressure relief valve helps stabilize temperature of cold head despite variations in atmospheric pressure. Feedback-controlled electrical heater provides additional stabilization. Demand-flow Joule-Thomson valve requires less nitrogen than fixed-orifice Joule-Thomson valve providing same amount of cooling. Provides stable low temperatures required for operation of such devices as tunable diode lasers in laboratory and balloon-borne instruments detecting contaminants in atmosphere.


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    Title :

    Joule-Thomson Cooler Produces Nearly Constant Temperature


    Contributors:

    Published in:

    Publication date :

    1992-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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