Abstract: A hot aisle modules and hot aisle containment system for an IT or computer facility, such as a data center. The hot aisle containment system includes a plurality of the modules that are connected by girders or other support members. The modules include a chute and telescopable legs that support the chute such that the height of the chute is variable.

Abstract: A multizone variable damper for air passageways having a plurality of damper zones, a plurality of opposed blades that are rotatable about a horizontal axis, a pair of blades of the plurality of blades being provided in each zone of the plurality of damper zones, and an actuator for each pair of blades, each actuator being configured to independently rotate each of the pairs of blades of the plurality of opposed blades so as to selectively and independently control a degree of openness of each of the pairs of blades of the plurality of opposed blades in each damper zone of the plurality of damper zones.

Abstract: A grate access floor panel comprising a support frame and a plurality of vanes supported by the frame, each of the plurality of vanes having an upstream end and a downstream end with respect to a direction of airflow across the plurality of vanes and faces that extend between the upstream and downstream ends, wherein at least some of the vanes have openings that extend through the faces thereof and have angled tips.

Abstract: An elongated structural ceiling grid member including an open-ended upper portion, an open-ended lower portion, and first and second flanges. The open-ended upper section is formed by a floor and a first set of second parallel and spaced sidewalls extending from and substantially perpendicular to the floor. The open-ended upper portion has an opening opposite the floor and defined by the first and second parallel and spaced sidewalls. The open-ended lower portion is formed by a ceiling and a second set of parallel and spaced sidewalls that extend from and are substantially perpendicular to the ceiling. The open-ended lower portion has a second opening opposite the ceiling and defined by the third and fourth parallel and spaced sidewalls. The first flange is attached to and extends perpendicular to the third parallel and spaced sidewall and the second flange is attached to and extends perpendicular to the fourth parallel and spaced sidewall.

Abstract: A grate access floor panel comprising a support frame and a plurality of vanes supported by the frame, each of the plurality of vanes having an upstream end and a downstream end with respect to a direction of airflow across the plurality of vanes and faces that extend between the upstream and downstream ends, wherein at least some of the vanes have openings that extend through the faces thereof and have angled tips.

Abstract: A grate access floor panel comprising a support frame and a plurality of vanes supported by the frame, each of the plurality of vanes having an upstream end and a downstream end with respect to a direction of airflow across the plurality of vanes and faces that extend between the upstream and downstream ends, wherein at least some of the vanes have openings that extend through the faces thereof and have angled tips.

Abstract: A grate access floor panel comprising a support frame and a plurality of vanes supported by the frame, each of the plurality of vanes having an upstream end and a downstream end with respect to a direction of airflow across the plurality of vanes and faces that extend between the upstream and downstream ends, wherein at least some of the vanes have openings that extend through the faces thereof and have angled tips.

Abstract: A grate access floor panel comprising a support frame and a plurality of vanes supported by the frame, each of the plurality of vanes having an upstream end and a downstream end with respect to a direction of airflow across the plurality of vanes and faces that extend between the upstream and downstream ends, wherein at least some of the vanes have openings that extend through the faces thereof and have angled tips.

Abstract: An access floor panel is disclosed that has a top plate with a plurality of non-directional air passageways intermingled with a plurality of directional air passageways. The directional air passageways are configured to direct airflow through them at an angle to the upper surface of the top plate of other than 90°. The directional air passageways include an opening in the top plate and a tab adjacent to each opening that is at an angle with respect to top surface of the top plate of other than 90°. Due to the intermingling of the non-directional air passageways and the directional air passageways, the composite air flow direction through the non-directional air passageways and the directional air passageways is at an angle with the top plate of other than 90°.

Abstract: An access floor panel is disclosed that has a top plate with a plurality of non-directional air passageways intermingled with a plurality of directional air passageways. The directional air passageways are configured to direct airflow through them at an angle to the upper surface of the top plate of other than 90°. The directional air passageways include an opening in the top plate and a tab adjacent to each opening that is at an angle with respect to top surface of the top plate of other than 90°. Due to the intermingling of the non-directional air passageways and the directional air passageways, the composite air flow direction through the non-directional air passageways and the directional air passageways is at an angle with the top plate of other than 90°.

Abstract: An access floor panel is provided that includes a support frame that supports a phase change material. The phase change material changes phases at a certain temperature. The support frame may form a shell having a cavity. The cavity may be filled with the phase change material or with a mixture of the phase change material and a fill material. The access floor panels can be every panel in an access floor system or selected panels in the system.

Abstract: An air seal device having a housing with a passageway, a core body that is configured to fit tightly within the passageway to restrict air flow through the passageway and to seal the interface between the core body and the housing, and a top ring that locks to the housing and engages and compresses the core body within the housing. The core body has a slit extending vertically therethrough that allows an elongated member or members to pass through the core body while providing an airtight interface between the member or members and the slit of the core body.

Abstract: A cooling system for selectively cooling the hot aisles of a data center is disclosed. The cooling system includes a source of cooling air, a relief damper configured to selectively allow cooling air from the source of cooling air to enter directly into the hot aisle, and a mechanism to move the relief damper between open and closed positions.

Abstract: An air seal device having a housing with a passageway, a core body that is configured to fit tightly within the passageway to restrict air flow through the passageway and to seal the interface between the core body and the housing, and a top ring that locks to the housing and engages and compresses the core body within the housing. The core body has a slit extending vertically therethrough that allows an elongated member or members to pass through the core body while providing an airtight interface between the member or members and the slit of the core body.

Abstract: A multizone variable damper for air passageways having a plurality of damper zones, a plurality of opposed blades that are rotatable about a horizontal axis, a pair of blades of the plurality of blades being provided in each zone of the plurality of damper zones, and an actuator for each pair of blades, each actuator being configured to independently rotate each of the pairs of blades of the plurality of opposed blades so as to selectively and independently control a degree of openness of each of the pairs of blades of the plurality of opposed blades in each damper zone of the plurality of damper zones.

Abstract: A grate access floor panel comprising a support frame and a plurality of vanes supported by the frame, each of the plurality of vanes having an upstream end and a downstream end with respect to a direction of airflow across the plurality of vanes and faces that extend between the upstream and downstream ends, wherein at least some of the vanes have openings that extend through the faces thereof and have angled tips.