Abstract: A hybrid air-conditioning system for controlling the condition of air in a building-enclosed space includes a first fan for passing process air from an ambient space through a first pre-cool evaporator coil, through a first zone of a rotatable moisture transfer wheel and then through a first zone of a rotatable heat exchange wheel to an enclosed and conditioned space. A second fan passes regenerative air from the enclosed and conditioned space through a second zone of the heat exchange wheel, through a first condenser coil, through a second zone of the moisture transfer wheel and then to the ambient space. The system further includes first and second compressors. The first compressor is in fluid communication with the first pre-cool evaporator coil and with the first condenser coil. The second compressor has a suction side in fluid communication with a second pre-cool evaporator coil and with a second condenser coil.

Abstract: A hybrid air-conditioning system for controlling the condition of air in a building-enclosed space includes a first fan for passing process air from an ambient space through a first pre-cool evaporator coil, through a first zone of a rotatable moisture transfer wheel and then through a first zone of a rotatable heat exchange wheel to an enclosed and conditioned space. A second fan passes regenerative air from the enclosed and conditioned space through a second zone of the heat exchange wheel, through a first condenser coil, through a second zone of the moisture transfer wheel and then to the ambient space. The system includes a first compressor having a suction side in fluid communication with a first side of the first pre-cool evaporator coil and a discharge side in fluid communication with a first side of the first condenser coil. The second side of the first pre-cool evaporator coil is in fluid communication with a second side of the first condenser coil.

Abstract: A combination heat reclaim and air conditioning coil for use in a refrigeration system having standard compressor means, a compressor discharge header connected to the discharge of the compressor means, first condensing means, a condenser supply line operatively connecting said compressor discharge header to said first condenser means, evaporator means, evaporator supply means for operatively connecting said first condenser means to the evaporator means, and a compressor suction header connecting the evaporator means to the suction of the compressor means for receiving the discharge of the evaporator means, wherein said combined heat reclaim and air conditioning coil is selectively connected to the compressor discharge header for condensing refrigerant gas or to the evaporator supply means for service as an air conditioning coil.