Patent ID: 6497116
Filing Date: 2002-12-24
Classification: A61F,F25D,F28D,Y02E

Abstract:
A method for cooling a substance, including the steps of(a) providing a heat transfer device including (i) a hollow primary container including a wall, and a first liquid housed in said container; and, (ii) at least one hollow auxiliary container in said first liquid and including a wall, and a second liquid housed in said auxiliary container; said second liquid having a freezing point less than the freezing point of said first liquid; (b) cooling said heat transfer device to freeze said second liquid; (c) contacting the substance with the heat transfer device such that heat (i) is abstracted from the substance into said first liquid by conduction through said wall of said primary container, (ii) abstracted into said first liquid by conduction through said wall of said primary container causes said liquid to have a nonuniform temperature and produces circulatory motion in said liquid due to variation in the density of said liquid and the action of gravity, (iii) is abstracted from said first liquid by said conduction through said wall of said auxiliary container.