System for preheating water using thermal energy from refrigerant system
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United States of America Patent
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-
Sep 27, 1988
Grant Date -
N/A
app pub date -
Jan 15, 1987
filing date -
Jan 15, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A preheater system for using thermal energy available in a refrigeration cycle to heat potable water disposes a double-walled coil having an internal vent path within a water filled tank. Superheated refrigerant is passed through the coil downwardly between an inlet and an outlet. Liquid condensed within the coil accumulates in the bottom of a trap from which it is forced upwardly into a receiver tank and then returned to the refrigeration system. If excessive cooling develops, a pressure responsive valve shunts incoming superheated gas into the receiver tank to return to the selected operating range.
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