One aspect is directed to a system for controlling airflow in a facility having a ceiling-ducted aisle airflow containment system having a first damper system for controlling airflow. The system includes an input to receive parameters related to airflow in the facility, wherein the parameters include at least one airflow resistance value for a device in the facility, an output to provide output data including at least one setting for one or more controllable devices in the facility, and one or more processors configured to receive the parameters related to airflow, determine airflow values associated with the airflow containment system and based on the airflow values, generate the at least one setting for the one or more controllable devices, including at least one setting for the first damper system.

An enclosure for an actuator of an HVAC unit includes a hollow member with an inner shell, an outer shell, and an insulation layer disposed between the inner shell and the outer shell. A cavity within the inner shell operates to receive an actuator. An exterior surface of the hollow member has curvilinear shape configured to limit resistance to airflow over the exterior surface. A base of the enclosure is connected to a first end of the hollow member and a cover is detachably coupled to a second end of the hollow member opposite the first end.

An enclosure for an actuator of an HVAC unit includes a hollow member with an inner shell, an outer shell, and an insulation layer disposed between the inner shell and the outer shell. A cavity within the inner shell operates to receive an actuator. An exterior surface of the hollow member has curvilinear shape configured to limit resistance to airflow over the exterior surface. A base of the enclosure is connected to a first end of the hollow member and a cover is detachably coupled to a second end of the hollow member opposite the first end.

A damper includes first and second blade assemblies disposed next to one another and rotatably supported by a frame to rotate together between open and closed positions. Each of the first and second blade assemblies includes a shaft and first and second blades connected to the shaft. The first and second blade assemblies have respective first and second seal members connected to the blades thereof. In the closed position, the first seal member abuts the second blade assembly at a first contact point to form a first seal, and the second seal member abuts the second blade assembly at a second contact point to form a second seal. The first contact point is further from a blade rotation axis of the first blade assembly than the second contact point. The second contact point is further from a blade rotation axis of the second blade assembly than the first contact point.

A method for providing personalized comfort to occupants of an environmentally conditioned space includes sensing a pre-adjustment pressure within a variable air volume diffuser, remotely adjusting a position an individually-adjustable directional outlet of the variable air volume diffuser, sensing a post-adjustment pressure within the variable air volume diffuser, and modifying the airflow through the variable air volume diffuser such that the post-adjustment pressure is equal to the pre-adjustment pressure. The variable air volume diffuser includes individually-adjustable directional outlets and a controller configured to regulate air pressure within the variable air volume diffuser when an individually adjustable directional outlet is adjusted. A user device in operative communication with the variable air volume diffuser includes a user interface to remotely adjust an adjustable directional outlet of the variable air volume diffuser to provide personalized comfort for the user. In embodiments, the variable air volume diffuser responds to spoken commands.

A method for providing personalized comfort to occupants of an environmentally conditioned space includes sensing a pre-adjustment pressure within a variable air volume diffuser, remotely adjusting a position an individually-adjustable directional outlet of the variable air volume diffuser, sensing a post-adjustment pressure within the variable air volume diffuser, and modifying the airflow through the variable air volume diffuser such that the post-adjustment pressure is equal to the pre-adjustment pressure. The variable air volume diffuser includes individually-adjustable directional outlets and a controller configured to regulate air pressure within the variable air volume diffuser when an individually adjustable directional outlet is adjusted. A user device in operative communication with the variable air volume diffuser includes a user interface to remotely adjust an adjustable directional outlet of the variable air volume diffuser to provide personalized comfort for the user. In embodiments, the variable air volume diffuser responds to spoken commands.

A heating ventilating and cooling (HVAC) system includes an outdoor air chase having a first end and a second end. The second end of the outdoor air chase is fluidly coupled to a condenser compartment at a location to receive outside air from the condenser compartment and the first end is fluidly coupled to the return air compartment. The outdoor air chase has a conduit through the outdoor air chase. The system includes a configurable flow regulating plate disposed in the outdoor air chase member across the conduit or otherwise across the outdoor airflow that has a plurality of discharge apertures. Initially, the plurality of discharge apertures is covered by a plurality of knockout panels. Each panel is removably secured to the plate. In installation, the installer removes as many of the knockout panels as required for a desired flow of outdoor air. Other systems and methods are presented.

A ventilation device 21 configured to be connected to a mouth of a ventilation duct 9 between the ventilation duct and an outside space. The ventilation device comprises an airflow opening 27 for passage of an airflow 30 between the ventilation device and the outside space. An air-permeable material 29 is arranged in the airflow opening 27.

Pallet racking systems are designed to quickly freeze items using thermal transfer by moving air through palletized products. Air is pulled through the palletized product to a negative air plenum behind the pallet rack. Back panels of the pallet racks provide variable-height airflow by use of louvers which are individually pressed open by the palletized product to accommodate differing product heights. The panels allow more efficient system operation with any number of rack positions filled.

Pallet racking systems are designed to quickly freeze items using thermal transfer by moving air through palletized products. Air is pulled through the palletized product to a negative air plenum behind the pallet rack. Back panels of the pallet racks provide variable-height airflow by use of louvers which are individually pressed open by the palletized product to accommodate differing product heights. The panels allow more efficient system operation with any number of rack positions filled.