Refrigeration process and system for recovering cold from methane by refrigerants
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United States of America Patent
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Sep 9, 2014
Grant Date -
Apr 5, 2012
app pub date -
Mar 29, 2010
filing date -
Apr 7, 2009
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Abstract
A refrigeration system includes a plurality of heat exchangers (E1, E2, E3) in cascade, each of said heat exchangers including: a flow (150) of cold-producing liquefied methane; a high-pressure flow (122) of a two-phase mixture of refrigerant fluids giving up in heat and including refrigerant fluids having a low normal boiling temperature; and a low-pressure flow (100) of a cold-producing two-phase mixture of said refrigerant fluids.
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