AC QUEST

 
    The AIRotor heat recovery unit is a rotary heat exchanger which operates on the air-to-air principle of heat transfer. It provides a way of recovering air conditioning energy in hot, humid climates.

Design Considerations:
Cool, dry, exhaust air enters one side of the rotating Heat Wheel, chilling the wheel and drying the desiccant coating. This cool and dry part of the wheel then rotates into the supply air where it absorbs heat and humidity from the incoming fresh air before the air is mechanically cooled to room temperature. The Heat Wheel can reduce the ventilation air-conditioning load by up to 90%, which saves energy and reduces the size of required air-conditioning equip ment.

Construction:
The RVA heat recovery unit is constructed from a rigid steel welded frame, with insulated galvanized sheet metal cover plates and hatches. The frame is reinforced to prevent deflect of the rotor from static pressure drops to less than 0.003 inches. The rotor is assembled from alternate layers of flat and corrugated thin sheet aluminum. The smooth channels formed by this construction ensure that the air flow is laminar, thereby ensuring that the pressure drop is low and minimizing the risk of fouling by dirt or dust. Dry particles up to 900 microns shall pass freely through the rotor without clogging the media. The rotor media can be cleaned with low temperature steam without degrading unit performance.

The hygroscopic rotor equally transfers both sensible and latent heat. Moisture is transferred between airstreams in the vapor stage so media remains dry and no drain pan is required. The rotor, which may be removed from the frame, is mounted in sealed permanently-lubricated spherical ball bearings. The bearings can be serviced or replaced without removing the rotor from the case.

An adjustable purging sector is provided to ensure continuous cleaning of the rotor and to virtually eliminate cross-contamination between the exhaust air and the supply air. The standard AIRotor heat recovery unit is supplied with a perimeter self adjusting belt and worm drive for on/off operation. For installations where there is a requirement for controlling heat recovery capacity and/or rotor frost control, the heat recovery unit is equipped with an electronic control unit that varies rotor speed from maximum speed down to an automatic purge cycle of 1/20 rpm.

    Flat Plate Heat exchangers allow the transfer of heat from exhaust air to ventilation air. Since the heat is transferred through a medium like aluminum, the clean air and dirty air never come in contact. Consequently up to 90% of the heat is recovered and placed in clean, healthy ventilation air.

Xetex makes flat plate heat exchangers for both the industrial and commercial markets.

Design Consideration:
Flat Plate Heat Exchangers must provide a high level of energy recovery efficiency. These units must be flexible enough to allow their custom application to many unique heat recovery situations.

Extruded Aluminum Separators provide a rigid, durable exchanger surface.

Open Exhaust Air Channels enhance condensate drainage and resist frost formation, reduce fouling by eliminating obstructions that collect dirt or dust, and allow physical cleaning of exhaust airstream with brush or mild abrasive.

Independent Spacing of Heat Exchanger Plates and Separators allows XeteX to provide custom exchangers to meet any pressure drop or performance requirements.

Why Choose Heat-X-Changer?
Heat-X-Changer's unique construction of engineered airflow channels and close rib spacing provide maximum heat transfer, among the highest in the industry, and versatile configuration options.