Dual evaporator refrigeration unit and thermal energy storage unit therefore
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United States of America Patent
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Apr 16, 2002
Grant Date -
N/A
app pub date -
Jan 6, 2000
filing date -
Nov 5, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A low-cost and thermodynamically efficient implementation of a two-stage refrigeration system applied to a retail refrigerator. The invention includes a simple and easily manufactured thermally efficient and low-cost evaporation unit. The invention further includes a thermal energy storage module and an energy efficient control protocol to maintain steady temperatures in the fresh and frozen food sections, to permit energy efficient defrosting of the heat exchange surfaces in the freezer section, and minimize losses associated with condensing unit on-and-off cycling.
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