Beverage cooling apparatus utilizing such gaseous coolants as carbon dioxide and chlorofluorohydrocarbon refrigerants are the subject of several patents. These cooling units entail a cooling coil adapted to be positioned within the beverage in combination with a reservoir from which gas passes through the cooling coil surrounded by the liquid beverage. The cooling apparatus herein is of the type including a reservoir and a cooling unit, but it is improved to make greater use of the latent heat of vaporization.
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