Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability
Patent
1994-10-25
1997-03-04
Look, Edward K.
Heat exchange
With timer, programmer, time delay, or condition responsive...
Having heating and cooling capability
219486, 392350, 165261, F25B 2900
Patent
active
056070144
ABSTRACT:
An improved heat pump system of the type having a thermostat capable of generating at least three stages of demand signals, outdoor and indoor heat exchange coils, at least one fan, a compressor, an expansion device, with the flow of refrigerant being reversible for purposes of selecting between heating and cooling modes of operation and a supplemental heater having a plurality of supplemental heating units for further heating an air stream passing over the indoor coil through an air supply plenum to supply air to a comfort space. An improvement in this system where each of the supplemental heating units has a unique heating capacity; a combination of supplemental heating units can be selected that is responsive to a demand for heat from the thermostat; and the selected supplemental heating units are turned on appropriately so that the level of heat demand by the thermostat is provided.
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Shah Rajendra K.
Van Ostrand William F.
Carrier Corporation
Look Edward K.
Sgantzos Mark
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