Patent ID: 7698903
Filing Date: 2010-04-20
Classification: F24F,F24T,Y02B,Y02E

Abstract:
1. A system for providing tempered air to an air to air heat exchanger, comprising: a tunnel beneath ground level, the tunnel having an entrance that draws air from the atmosphere; a tunnel air intake duct that directs tunnel air from the tunnel to a mixing chamber of a control module; an outside air intake duct that directs outside air from the atmosphere to the mixing chamber of the control module; a return air intake duct that directs return air from a structure to the mixing chamber of the control module; the control module comprising three entry openings for the tunnel air intake duct, the outside air intake duct, and the return air intake duct; the mixing chamber forming a cavity defined by the walls of the control module, wherein the air from the tunnel air intake duct, the outside air intake duct, and the return air intake ducts are mixed in the mixing chamber; the control module regulates and directs the air received from the tunnel air intake duct, the outside air intake duct and the return air intake duct to an air supply that is in communication with an exterior portion of the air to air heat exchanger, wherein the exterior portion of the air to air heat exchanger venting to the atmosphere, and to another air supply in communication with an interior portion of the air to air heat exchanger.