Refrigerant-based thermal energy storage and cooling system with enhanced heat exchange capability
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United States of America Patent
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Nov 9, 2010
Grant Date -
Jul 23, 2009
app pub date -
Feb 6, 2009
filing date -
May 25, 2004
priority date (Note) -
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Abstract
Disclosed is a method and device to increase the cooling load that can be provided by a refrigerant-based thermal energy storage and cooling system with an improved arrangement of heat exchangers. This load increase is accomplished by circulating cold water surrounding a block of ice, used as the thermal energy storage medium, through a secondary heat exchanger where it condenses refrigerant vapor returning from a load. The refrigerant is then circulated through a primary heat exchanger within the block of ice where it is further cooled and condensed. This system is known as an internal/external melt system because the thermal energy, stored in the form of ice, is melted internally by a primary heat exchanger and externally by circulating cold water from the periphery of the block through a secondary heat exchanger.
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