Patent ID: 8425673

Claim:
A moisture control system for pressurized air, comprising: first and second chambers alternating between drying and regenerating phases, only one of the chambers being at the drying phase at any given point in time; an input providing air to the chamber at the drying phase; a bypass line passing air that does not pass through the chamber at the drying phase; a dew point feedback system for controlling the volume of air passing through the bypass line; a condenser in communication with the bypass line for drying air; a drain for draining liquid condensed by the condenser; a compressor for providing hot air to the chamber at the regenerating phase; a control valve to prevent air from directly passing from the compressor to the input providing air to the chamber at the drying phase; a regeneration bypass line for bypassing hot air from the compressor around the chamber at the regeneration phase after regeneration of a desiccant in the chamber at the regeneration phase is substantially complete; a sensor to determine when the desiccant in the chamber at the regeneration phase has been substantially regenerated; a regeneration bypass control valve; and a controller in communication with the sensor and the regeneration bypass control valve for selectively allowing hot air from the compressor to travel through the regeneration bypass line; wherein air exiting the chamber at the drying phase is combined with air from the bypass line to obtain air with a controlled moisture content for outputting; wherein air exiting the chamber at the regenerating phase passes to at least one of: the chamber at the drying phase, the bypass, and the drain; and wherein the hot air bypassing the chamber at the regeneration phase passes to at least one of: the chamber at the drying phase, the bypass, and the drain.