Abstract: A ventilation system and a controlling method of such a ventilation system are provided. The ventilation system may exhaust internal air from and draw fresh external air into a designated space. When an outdoor temperature is below a freezing point, some of the internal components of the ventilation system may be damaged due to the low external air temperature. This ventilation system controls operation of a supply fan and/or an exhaust fan based on the temperature of supplied and/or exhausted air to prevent such damage.

Abstract: A vehicle heating, ventilation and air conditioning system includes a plurality of ducts for providing conditioned air to an interior of a vehicle. The plurality of ducts includes a window defrost duct and a floor duct. The system includes a mixing chamber upstream of the window defrost and floor duct. A damper is selectively controllable to distribute the conditioned air to one or more of the plurality of ducts. The damper is configured so that when in a floor only mode position, the damper directs conditioned air in the mixing chamber only to the floor duct. A bypass conduit is configured to direct air from the floor duct to the window defrost duct when the damper is in the floor-only mode position. The conditioned air directed through the bypass conduit attenuates noise generated in the mixing chamber from emanating to the window defrost duct.

Abstract: An exhaust system includes: an exhaust pressure controller interposed in an exhaust passage and including: a pipe body including a side peripheral wall in which at least one port is formed; and a gas introduction wall for introducing an exhaust gas flowing from an upstream side of the pipe body so that the exhaust gas flows downstream without coming into direct contact with the port and vicinity thereof, one face of the gas introduction wall forming a pressure control path together with an inner face of the side peripheral wall while another face of the gas introduction wall forming an exhaust gas path along which the exhaust gas flows. The port communicates with the pressure control path, and the pressure control path communicates with the exhaust gas path at part downstream of the port.

Abstract: An aircraft air conditioning system includes a main air conditioning device which taps air off a turbine engine, and an auxiliary unit with a compressor that taps ambient air and conditions it to send to a distributing device in place of a main device, when the aircraft is in cruising flight or close to cruising flight.

Abstract: Plural vertically aligned curtain sections form a first wall of a structure and are each coupled to a respective manual or powered rotary drive by means of a respective elongated, roll-up rod disposed in a lower hem, and extending the length, of the curtain section. The rotary drives are attached to horizontally spaced, vertical tracks for limiting the vertical drives, the roll-up rods and each curtain's lower hem to vertical motion in rolling up and unrolling the curtain sections. A water curtain maintained in a moist condition is disposed adjacent the inner surfaces of the curtain sections, with fans disposed on a second opposed wall of the structure for drawing air through the space occupied by the curtain sections for providing moist airflow through the structure's interior. Moist airflow and cooling are precisely controlled by controlling the gap between a pair of adjacent vertically spaced curtain sections.

Abstract: A battery cooling structure which cools a battery equipped on a vehicle, the battery cooling structure including: a fan sending an air to cool the battery; and a sound insulation wall including a sound insulation material which insulates noise wherein the sound insulation wall faces an exhaust outlet of the fan.

Abstract: An exhaust apparatus provides a housing with at least one exhaust compartment disposed within the housing, and at least one draft damper repositionable to operate at orientations of about 0°, 90°, 180° and 270° with respect to a level plane of an exterior bottom surface of the housing.

Abstract: A supply duct is provided for supplying a gaseous fluid at a constant flow rate per unit length of the duct. The supply duct includes a main compartment, at least one nozzle disposed in the main compartment, and a plurality of restrictors extending from an inner wall of the main compartment. The main compartment of the supply duct has a generally constant cross-section. Each nozzle in the main compartment defines an outlet to allow a gaseous fluid to flow out from the main compartment. Each restrictor is configured to produce a flow rate through the nozzle at the first end of the main compartment that is substantially equal to the flow rate through the nozzle at the second end of the main compartment. The restrictor may be, for example, a restrictor plate. A method of sizing restrictor plates is also provided.

Abstract: A supply air terminal device (10) has a supply air chamber (12), into which fresh air is conducted from out of doors and further from it through a nozzle gap or nozzles (12a1, 12a2 . . . ) into a mixing chamber (14). The fresh supply air (L1) induces a circulated airflow (L2) from a room (H) to flow through a heat exchanger (13) into the mixing chamber (14). The combined airflow (L1+L2) combined in the device solution of the fresh supply air (L1) and the room air (L2) flow is made to flow from the mixing chamber (14) into a room space (H) or other such. The mixing chamber (14) of the supply air terminal device (10) has in the mixing chamber (14) or in connection with this in a flow passage (14?) a film element (15), preferably a film-like electric resistance.

Abstract: An air return bulkhead may be removably mounted to the front wall of a cargo container such that the air return bulkhead is releasable and securable without the use of handheld tools. Accordingly, in various embodiments the bulkhead may be quickly and easily uninstalled and reinstalled so as to permit system maintenance, such removal of debris from a filter screen.

Abstract: A multiple outflow valve control system for an aircraft is provided having a plurality of outflow valves that may be controlled independently via an all electrical control system. The outflow valves may be located in various locations in an aircraft. The control system may have a control loop controlling the outflow valve motors via open-loop PWM commands and may not have a motor speed feedback in the control loop. The cabin pressure control system may have manual and auto controls controlling separate motors on each outflow valve. Auto motor control may be performed via software biasing command logic included in the control laws in the control system. Air flow may be biased through selected outflow valves and the degree of biasing may be automatically or manually set.

Abstract: An apparatus for cooling ventilation air for a building, includes a radiating panel having an emissive surface for use on the building such that the emissive surface of the panel is directed skyward and exposed to ambient air. The radiating panel defines an air collection space between itself and the building and has a plurality of air openings for the ambient air to pass through the openings to the air collection space. A passageway extends between the air collection space and an interior of the building and is located for passage of cooled ambient air from the air collection space into the interior of the building. A fan is located for moving the cooled ambient air from the air collection space through the passageway to the interior of the building.

Abstract: A variable duct apparatus that controls outside air flowing in to a radiator includes a variable louver that is provided so as to extend in the vehicle width direction between a grille opening and a radiator of a vehicle, and regulates the amount of outside air admitted to the radiator, a lower louver that is provided so as to extend in the vehicle width direction between an air inlet and the radiator, and regulates the amount of outside air admitted to the radiator, and a link mechanism that coordinates and synchronizes the variable louver and the lower louver with each other, and interrupts the coordination between the variable louver and the lower louver upon application of an external force to the lower louver to thereby permit swinging of the lower louver.

Abstract: An impeller exhaust ridge vent is provided for covering a ridge slot formed along the ridge of a roof. The ridge vent has an elongated laterally flexible center panel with edge portions along which vents are formed. Standoffs can depend from the bottom of the center panel for supporting the center panel a predetermined distance above the roof deck so that attic air can vent through the ridge slot, beneath the center panel, and exit through the vents. A base panel can be provided to cover the roof deck and form a smooth substantially sealed air duct for passage of the air. Upstanding wind baffles are disposed outboard of and spaced from the vents. One or more tangential impellers is rotatably mounted in the pace between the vents and wind baffles and can be free spinning or driven by an electric motor. Rotation of the tangential impellers creates a cross-flow fan effect that draws air forcibly from beneath the center panel and exhausts it to ambience. The attic space is thereby actively ventilated.

Abstract: An air duct system for vehicles, in particular for passenger rail vehicles, has at least one roof venting duct, which has a component venting duct for warm air and a component venting duct for cold-air. A separating means which is arranged inside the roof venting duct is designed so it can be deformed or is held in a movable fashion in such a way that the cross section of each of the two component venting ducts can be enlarged by making the respective other component venting duct smaller. These changes in cross section are brought about solely by the air pressure and volume flow conditions without external energy.

Abstract: A preferred embodiment relates to a cooling system and a method for cooling an electronic display. Exemplary embodiments include a transparent gas cooling chamber. The components in the system are preferably housed within the electronic display housing. The cooling chamber defines a gas compartment that is anterior to and coextensive with the electronic display surface. Fans may be used to propel the isolated gas through the cooling chamber. The circulating gas removes heat directly from the electronic display surface by convection. The isolated gas is transparent or at least semi-transparent. The image quality of an exemplary embodiment remains essentially unchanged, even though the gas is flowing through a narrow channel over the visible face of the electronic display surface.

Abstract: A system for securing a panel is described. In an exemplary embodiment, the panel is an air grille, such as, for example, an aircraft air-return air grille.

Abstract: The present invention discloses that outside air flows into an APU room by using a difference in pressure of the inside and the outside of the APU room during driving of a bus to induct a natural convection in the APU room and thus cool an air drier provided in the APU room, and is discharged from the APU room. Accordingly, an increase in temperature of air drier is prevented and the high temperature compressed air generated in compressor is subjected to active heat exchanging in respects to the outside while passing through air drier, thereby preventing formation of moisture according to a change in temperature of the compressed air.

Abstract: An air distribution system for an air conditioning system includes an air supply and a plurality of air distribution units. The air distribution units are arranged in a side-by-side configuration. The air supply is operably connected to at least one of the air distribution units. Each air distribution unit includes a delivery feature for delivering air from the air supply through the air distribution unit and into an adjacent air distribution unit.

Abstract: A system for managing engine intake air temperature may comprise a first air flow control device having an inlet coupled to an outlet of a turbocharger compressor and a first outlet coupled to an inlet of a charge air cooler. A second outlet is coupled via a bypass conduit to the air intake manifold. The first air flow control device may selectively control air flow from the compressor outlet to the charge air cooler and/or bypass conduit. The system may alternatively or additionally include a second air flow control device having a first inlet receiving air external to the engine compartment, a second inlet receiving air from within the engine compartment and surrounding the engine and an outlet providing air flow to the engine. The second air flow control device may selectively control air flow from the first and/or second inlets thereof to the engine.