Abstract: A variable chiller exhaust system incorporate a plurality of chillers, each driller having an inlet receiving air from a crown in an aircraft fuselage and an outlet connected to a manifold. A plurality of check valves are connected to the manifold and configured to maintain a differential back pressure on the plurality of chillers of 2? water pressure or less. The check valves vent into the crown. An exhaust conduit is connected to direct air from the manifold to a variable speed fan. An outflow valve exhausts air from the variable speed fan to an exterior of the fuselage.

Abstract: A variable chiller exhaust system incorporate a plurality of chillers, each chiller having an inlet receiving air from a crown in an aircraft fuselage and an outlet connected to a manifold. A plurality of check valves are connected to the manifold and configured to maintain a differential back pressure on the plurality of chillers of 2? water pressure or less. The check valves vent into the crown. An exhaust conduit is connected to direct air from the manifold to a variable speed fan. An outflow valve exhausts air from the variable speed fan to an exterior of the fuselage.

Abstract: A variable chiller exhaust system incorporate a plurality of chillers, each chiller having an inlet receiving air from a crown in an aircraft fuselage and an outlet connected to a manifold. A plurality of check valves are connected to the manifold and configured to maintain a differential back pressure on the plurality of chillers of 2? water pressure or less. The check valves vent into the crown. An exhaust conduit is connected to direct air from the manifold to a variable speed fan. An outflow valve exhausts air from the variable speed fan to an exterior of the fuselage.

Abstract: Apparatus for housing electronic components comprising a heated enclosure comprising a bottom, a top, three sides, a substantially open front and a heating element for transmitting heat to enclosure surfaces. Perforations are located in the heated enclosure to facilitate the passage of air from one side of the heated enclosure to the other. A plenum is connected to the perforations, the plenum being configured to transmit air between the outside and inside of the heated enclosure. Completing the apparatus as control electronics comprising a power source and temperature monitoring and feedback circuitry, and insulation covering a heated portion of the heated enclosure.

Abstract: Apparatus for housing electronic components comprising a heated enclosure comprising a bottom, a top, three sides, a substantially open front and a heating element for transmitting heat to enclosure surfaces. Perforations are located in the heated enclosure to facilitate the passage of air from one side of the heated enclosure to the other. A plenum is connected to the perforations, the plenum being configured to transmit air between the outside and inside of the heated enclosure. Completing the apparatus as control electronics comprising a power source and temperature monitoring and feedback circuitry, and insulation covering a heated portion of the heated enclosure.