Method and apparatus for freezing products
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United States of America Patent
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Feb 26, 2002
Grant Date -
N/A
app pub date -
Jun 28, 2000
filing date -
Jul 15, 1999
priority date (Note) -
Expired
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Abstract
A method of freezing a product, which method comprises the steps of vaporizing a cryogenic liquid and warming the vapor thus formed in indirect heat exchange with a product to be frozen, work expanding the warmed vapor, and using the work expanded vapor thus obtained to refrigerate the or another product.
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