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U.S. Department of Energy
Office of Scientific and Technical Information

Reverse cycle heat reclaim coil and subcooling method

Patent ·
OSTI ID:5385067
In combination with a refrigeration system including compressor means having discharge and suction sides, condenser means, receiver means and multiple evaporator means, a heat reclaim coil disposed in an air handler unit adapted to seasonally condition air for heating and cooling space air in a building is described. The heat reclaim coil has first and second piping connections and is selectively connected in the refrigeration system for reverse cycle operation between a heating mode and a subcooling mode, a first reversing valve located on the discharge side of the compressor means and having a summer position connecting the discharge side to the condenser means and a winter position for connecting the discharge side to the first piping connection of the heat reclaim coil. A second reversing valve is located upstream of the receiver means and has a summer position and a winter position. The second reversing valve connects the condenser means to the second piping connection of the heat reclaim coil and the first piping connection of the heat reclaim coil to the receiver means in the summer position thereof, and the second reversing valve connects the condenser means to the receiver means in the winter position thereof.
Assignee:
Hussman Corp., Bridgeton, MO
Patent Number(s):
US 4711094
OSTI ID:
5385067
Country of Publication:
United States
Language:
English