Abstract: An air handling system includes a housing, a blower, a sensor, an air intake valve, and a controller. The housing includes an outlet to a passenger compartment, a fresh air inlet providing fresh air into the housing and a recirculated air inlet that guides air flow from the passenger compartment into the housing. The blower moves air through the housing. The air intake valve moves between a closed position blocking air flow from the fresh air inlet into the housing and an open position unblocking air flow from the fresh air inlet into the housing. The controller positions the air intake valve relative to the fresh air inlet controlling the flow of fresh air into the housing and thereby maintaining moisture density of the air flow entering the passenger compartment within a prescribed range based on humidity and temperature values from the sensor.

Abstract: An air handling system includes a housing, a blower, a sensor, an air intake valve, and a controller. The housing includes an outlet to a passenger compartment, a fresh air inlet providing fresh air into the housing and a recirculated air inlet that guides air flow from the passenger compartment into the housing. The blower moves air through the housing. The air intake valve moves between a closed position blocking air flow from the fresh air inlet into the housing and an open position unblocking air flow from the fresh air inlet into the housing. The controller positions the air intake valve relative to the fresh air inlet controlling the flow of fresh air into the housing and thereby maintaining moisture density of the air flow entering the passenger compartment within a prescribed range based on humidity and temperature values from the sensor.

Abstract: An air circulation and ventilation system for an enclosure. The system includes a fan assembly subsystem with a housing defining a manifold. The housing has a first intake aperture configured to receive air from within the enclosure, a first outlet aperture configured to emit air from the manifold to outside the enclosure, and a fan configured to draw air in through the first intake aperture. The system includes a pressure equalization subsystem having a port configured to allow additional air into the enclosure. The port includes a damper for selectively opening and closing the port. The system also includes a switching subsystem with a switch operably coupled to the fan and the damper. The switch selects between a first mode where the damper is closed and the fan is off and a second mode where the port damper is open and the fan is on.

Abstract: An air circulation and ventilation system for an enclosure. The system includes a fan assembly subsystem with a housing defining a manifold. The housing has a first intake aperture configured to receive air from within the enclosure, a first outlet aperture configured to emit air from the manifold to outside the enclosure, and a fan configured to draw air in through the first intake aperture. The system includes a pressure equalization subsystem having a port configured to allow additional air into the enclosure. The port includes a damper for selectively opening and closing the port. The system also includes a switching subsystem with a switch operably coupled to the fan and the damper. The switch selects between a first mode where the damper is closed and the fan is off and a second mode where the port damper is open and the fan is on.