A ceiling system is provided that has a ceiling structure suspended within a space of a building thereby dividing the space into an occupied space below the ceiling structure and a plenum space above the ceiling structure; a panel structure supported by the ceiling structure and having an opening; a pressurized air passageway aligned with the opening, the pressurized air passageway having an outlet; and an inductive air passageway adjacent the pressurized air passageway, the inductive air passageway having an inlet and an outlet. The pressurized air passageway and the inductive air passageway are configured such that pressurized air passing through the outlet of the pressurized air passageway induces an induced air flow out of the outlet of the inductive air passageway.

A ceiling system is provided that has a ceiling structure suspended within a space of a building thereby dividing the space into an occupied space below the ceiling structure and a plenum space above the ceiling structure; a panel structure supported by the ceiling structure and having an opening; a pressurized air passageway aligned with the opening, the pressurized air passageway having an outlet; and an inductive air passageway adjacent the pressurized air passageway, the inductive air passageway having an inlet and an outlet. The pressurized air passageway and the inductive air passageway are configured such that pressurized air passing through the outlet of the pressurized air passageway induces an induced air flow out of the outlet of the inductive air passageway.

A connector to fit in a window gap, the connector having a generally elongated shape and having two parts being slidable in relation to each other. The connector includes an air-inlet adapted to receive air from an air conditioner and an air outlet. The two parts include a body and a telescopic part and the connector is adapted to be manipulated to be in: a first state where the body and the telescopic part can be moved in relation to each other in a length direction of the connector, or a second state where the body and the telescopic part are locked in relation to each other in a length direction of the connector by a locking mechanism.

A connector to fit in a window gap, the connector having a generally elongated shape and having two parts being slidable in relation to each other. The connector includes an air-inlet adapted to receive air from an air conditioner and an air outlet. The two parts include a body and a telescopic part and the connector is adapted to be manipulated to be in: a first state where the body and the telescopic part can be moved in relation to each other in a length direction of the connector, or a second state where the body and the telescopic part are locked in relation to each other in a length direction of the connector by a locking mechanism.

A ventilator for a window frame profile, the ventilator having an air intake opening and an air passage opening to ventilate a hollow member of a window frame profile, and a window frame profile system comprising a window frame profile and at least one such ventilator.

A ventilator for a window frame profile, the ventilator having an air intake opening and an air passage opening to ventilate a hollow member of a window frame profile, and a window frame profile system comprising a window frame profile and at least one such ventilator.

Disclosed herein are methods, systems, and devices for allowing access for maintenance and servicing of environmental control systems of prefabricated equipment enclosures. In one embodiment, an enclosure includes a first wall, a first environmental control unit, and a first door. The first door is mechanically coupled with the first environmental control unit and the first wall. The first door is configured to have a first closed position allowing in-service operation of the first environmental control unit for an internal space of the enclosure.

The invention relates to an improved installation device (10) that is particularly useful for sealing windows of a hinged type. The installation device is configured to provide a sealed air exhaust via a hinged window (1). The installation device in accordance with the present invention comprises a rectangular part (6) comprising a hole (7) and at least one connector (15) configured to secure the rectangular part to the frame (5) of a window pane (4) of the hinged window in a position where the rectangular part covers a rectangular gap formed opposite the hinges of the hinged window when the hinged window is in a partly open position. By providing one or more connectors to secure the rectangular part to the frame of the window pane a sealing that efficiently covers the rectangular gap of the hinged window is provided. The sealing can fit different types of windows and is easy to mount. The connectors can advantageously be formed by clamps.

The invention relates to an improved installation device (10) that is particularly useful for sealing windows of a hinged type. The installation device is configured to provide a sealed air exhaust via a hinged window (1). The installation device in accordance with the present invention comprises a rectangular part (6) comprising a hole (7) and at least one connector (15) configured to secure the rectangular part to the frame (5) of a window pane (4) of the hinged window in a position where the rectangular part covers a rectangular gap formed opposite the hinges of the hinged window when the hinged window is in a partly open position. By providing one or more connectors to secure the rectangular part to the frame of the window pane a sealing that efficiently covers the rectangular gap of the hinged window is provided. The sealing can fit different types of windows and is easy to mount. The connectors can advantageously be formed by clamps.

Provided is an indoor ventilation system which can ventilate an indoor space even without opening a glazed window. A ventilation window includes an opening which is formed through a glass plate thereof and can be opened or blocked. In the system, only a space corresponding to the opening is open to the outside so as to ventilate an indoor space without a glazed window, an open area of the opening is narrow so as to be secure against outside invasion and a falling accident, and a perimeter of a frame is short so as to minimize energy loss.