Two desalination projects include an investigation of the conditions under which ice crystal growth would occur in the bulk or on seed ice crystals with heat removal through a cold wall and an investigation of the feasibility of using a vacuum spray chamber to strip refrigerant from refrigerant water emulsions. Indirect freezing experiments were carried out in a double pipe heat exchanger with seed ice concentrations of 5 to 18 % and temperature driving forces of 3 to 10 Cel using both a brass and styrene coated brass tube. Under all the conditions investigated, ice crystal growth occurred on the tube walls. Significant removal of emulsified refrigerant occurred by two mechanisms; flashing of the refrigerant drops into the spray chamber during the expansion and break up of the liquid sheet and disolution of the emulsified droplets into the aqueous phase. A model based on these mechanisms was developed which satisfactorily explained the experimental results.


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    Title :

    Indirect freezing and vacuum stripping of emulsions for freeze desalination of saline water


    Additional title:

    Indirektes Gefrieren und Vakuumstreifen von Emulsionen fuer die Gefrierentsalzung von Salzwasser


    Contributors:
    Barduhn, A.J. (author) / Rice, P.A. (author) / Subramanian, K. (author) / Tackie, M.N. (author)

    Published in:

    Publication date :

    1984


    Size :

    127 Seiten


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English




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