An air delivery assembly having a baffle and an ionizer. The baffle is constructed to affect air flow such that air flowing through the air delivery assembly has an air velocity and a direct flow to the ionizer that is effective to deliver ions through a diffuser of the air delivery assembly and up into a room. The air delivery assembly may be included with a damper and/or an upper diffuser to form an air terminal, which may be used in a raised floor air distribution system.

A vent cover assembly is disclosed, such as for a floating or fixed floor. Example vent cover assemblies may include a support plate configured to be secured over a duct, and a flush mount vent cover. The support plate may define a plurality of first airflow apertures configured to permit airflow from the duct through the support plate. The vent cover may define a second plurality of airflow apertures that are positioned in the vent cover such that the second plurality of airflow apertures are aligned with the first airflow apertures when the vent cover is in a first installed position overlying the support plate. The vent cover may obstruct the first airflow apertures when the vent cover is in a second installed position overlying the support plate.

A floor system for detecting refrigerant includes one or more tiles. Each tile includes a tile body having a cavity formed therein and a grille element positioned within the cavity of the tile body. The grille element is configured to receive air from at least one of above or below the tile body. Each tile further includes a control assembly associated with the grille element. The control assembly includes a refrigerant sensing device to detect refrigerant in the received air. The control assembly is configured to output a signal indicating a detection of refrigerant.

A raised floor system includes a plurality of base units and at least one sanitizer unit. The plurality of base units are configured to define a portion of a floor. The sanitizer unit is configured to provide sanitized air to an environment above the floor. The sanitizer unit includes a housing; an ultraviolet light source disposed in the housing; a fan configured to facilitate air to flow into the housing, across the ultraviolet light source, and out of the housing into the environment; and a cover plate disposed on the housing, the cover plate configured to define a portion of the floor and to allow air to exit the housing into the environment.

A system and method of reducing consumption of electricity used to cool electronic components such as in an electronic computer data center or in a facility of networking and telecommunications equipment, and to reduce the incidence of thermal failure of the electronic components, includes providing one or more partitions configured to form a reduced-volume cooled-environment chamber in order to supply cooled air from an air conditioning system to the chamber adjacent to racks containing the electronic components, thereby preventing dilution of the cooling air by warmer air from outside of the chamber, and controlling the delivery of cooling air through the reduced-volume cooled-environment chamber.

A displacement ventilation system for a room includes a first duct located inside the room and extending between a floor and a ceiling of the room, an air inlet coupled with the first duct for drawing air into the system, and an elongated diffuser extending adjacent the floor for diffusing at least some of the outside air over the floor of the enclosed spaced. The system includes a return air duct extending adjacent the ceiling and being coupled with the first duct for removing return air from the room and advancing the return air toward the first duct, a heat exchanger for transferring thermal energy between the return air and the outside air, and a heat pump for changing a temperature level of the outside air or the return air passing through the heat pump. The system includes sensors located inside the room, and a controller for controlling operation of the system. The controller is in communication with the sensors.

An air conditioning unit (2) comprises a main body (3) including an air inlet (24) and an air outlet (22), the main body (3) defining an airflow passage between the air inlet (24) and the air outlet (22). A fan (28) is disposed within the airflow passage and a thermal element (26) is disposed within the airflow passage upstream of the fan (28). The main body (3) has a front face exposed to a temperature controlled space (8), on which the air outlet is disposed, and the air inlet and thermal element are disposed around the periphery of the front face.

An aircraft fuselage including a fuselage skin, cross-members supporting a floor of the aircraft, wherein the fuselage includes a multifunctional substructure fixed to at least one of the cross-members in a lowered part of the cross-member. The multifunctional substructure comprises: at least one duct of an air distribution system having a substantially rectangular section at the location of the at least one cross-member and having lateral walls of the duct that are substantially vertical; a seat fixing track or a stiffener fixed on a first lateral wall of the duct of the multifunctional substructure, and; a seat fixing track or a stiffener fixed on a second lateral wall, opposite the first lateral wall, of the duct of the multifunctional substructure.

An air diffuser configured to be positioned in a raised floor, in which the air diffuser includes a sleeve having a first end and a second end with an air flow passage extending through the sleeve from the first end to the second end, a diffuser face disposed at the first end of the sleeve and configured to be exposed to an environment in an installed position within the raised floor, a damper disposed at the second end of the sleeve, and a plenum chamber defined within the sleeve between the damper and the diffuser face.