Water vapor in working fluid equilibrates with permeability-reducing oxides in metal parts. Report describes study of effects of water on permeation of heater-head tubes by hydrogen in Stirling engine. Experiments performed to determine minimum concentration of oxygen and/or oxygen-bearing gas maintaining oxide coverage adequate for low permeability. Tests showed 750 ppm or more of water effective in maintaining stable, low permeability.


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    Title :

    Effect Of Water On Permeation By Hydrogen


    Contributors:

    Published in:

    Publication date :

    1988-12-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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