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Carbon dioxide snow is an effective cooling medium, and it is easy to use the correct amount. This is best done with the help of a snow horn, which is used for cooling products in containers, cartons or at cutting-up and packaging depots.
The snow horn converts liquid carbon dioxide to snow with a temperature of -79oC. When liquid carbon dioxide is allowed to expand to atmospheric pressure, about 50% gaseous carbon dioxide and 50% carbon dioxide snow is released. When allowed to lie in close contact with the product, carbon dioxide snow offers a deep-seated cooling effect . Carefully optimized and designed expansion nozzles guarantee efficient snow generation and rapid cooling. Snow horn designs are available from manual for portable use up through permanent, integrated units. |
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