Verfahren und Vorrichtung zur Kühlung einer wässerigen Flüssigkeit

摘要

A method of cooling an aqueous liquid, which method comprises the steps of: a) placing said aqueous liquid in a vessel (101; 201; 301; 401); b) reducing the pressure in said vessel to cause said aqueous liquid to boil; and c) condensing at least some of the liquid in the vapour created as said aqueous liquid boils; characterised by: d) effecting said condensation by heat exchange with a liquid cryogen; and e) using vapour from said liquid cryogen to provide or assist in step (b).