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We present a simple layout of a fast cooling system for liquids in sealedcontainers utilizing the large temperature gradients of cold nitrogen gas. Oursystem is optimized for about 20 cylindrical containers of 500 cm3 but thesetup allows for simple up- and downscaling as well as the use of arbitrarycontainers. We have characterized the cooling performance of our systemexperimentally for liquid temperatures in the range from room temperature downto the freezing point at ~ -2 {\deg}C. With our system we achieve containercooling times as low as 3 min, a significant reduction if compared to coolingtimes with common methods in the range of 8 to 40 min. Modeling of the coolingprocess proves that convection within the liquid is crucial for quick heattransfer and that the most important factor limiting the cooling rate is thethermal conductivity of the container material.

A setup for fast cooling of liquids in sealed containers and at intermediate temperatures