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US 5,448,895 AGranted
Hybrid heat pump and desiccant space conditioning system and control method
AssigneeEngelhard/ICC
InventorsJames A. Coellner, Dean S. Calton
Life of this patent
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Abstract
An energy-efficient space conditioning system comprising an integrated direct expansion heat pump with desiccant and thermal exchange wheels. A method is disclosed for controlling the system to have four distinct modes of operation: Heating, Cooling/Regneration, Coil Defrost, and Regeneration.
Claims14
A heat pump and desiccant space conditioning system which operates on process air taken from conditioned space, and regenerative air taken from ambient space comprising:
- (a) means for converting a gaseous refrigerant at a first predefined temperature and pressure to a liquid refrigerant at a second predefined temperature and pressure;
- (b) means for adsorbing water vapor from process air;
- (c) means for transferring sensible heat from process air to regenerative air;
- (d) means for one of heating and cooling process air and for both heating and cooling regenerative air by phase change of a refrigerant;
- and
- (e) control means for directing said refrigerant to one of said heating and cooling means in response to control signals.
3 more elements
A heat pump and desiccant space conditioning system comprising:
- first means for passing process air from an enclosed and conditioned space through a first zone of a rotatable desiccant wheel and then through a first zone of a rotatable heat exchange wheel and then through an indoor coil back to the enclosed and conditioned space;
- second means for passing regenerative air from an ambient space through a second zone of said heat exchange wheel and then through an outdoor coil and then through a second zone of said desiccant wheel and then through a reclaim coil back to the ambient space
- a compressor having a suction side in fluid communication with a first side of each of said reclaim coil, said outdoor coil and said indoor coil and a discharge side in fluid communication with said first side of said outdoor coil and said indoor coil;
- and
- a refrigerant receiver in fluid communication with a second side of each of said reclaim coil, outdoor coil and indoor coil.
2 more elements
Dependencies are inferred from the claim text.