Abstract:
The invention relates to a supply air device (20) comprising: a nozzle channel structure (21 ) comprising at least one nozzle (23) and a mixing chamber (24). The nozzle channel structure (21) is arranged in a distance from the bottom (26) of the device forming a circulation space between the bottom (26) of the device and the nozzle channel structure (21). Primary air is led to the nozzle channel structure (21) and further to the mixing chamber (24) as at least one primary air flow. Primary air flow entrains secondary air to flow to the mixing chamber (24) and at least a part of secondary air flows to the mixing chamber (24) through the circulation space, wherein the primary air and secondary air are arranged to be mixed in the mixing chamber (24) before flowing out of the supply air device (20). The invention further relates to a nozzle channel structure (21) arranged to be used in a supply air device (20).
Abstract:
Die Erfindung betrifft ein Verfahren zur Belüftung und Temperierung von Räumen nach dem Prinzip der Verdünnungslüftung, wobei ein Primärluftstrom (40) in den Deckenhohlraum (30) eines Raumes (4) eingeleitet wird, der durch eine Unterdecke (31) von der Geschoßdecke (26) abgeteilt ist und über Undichtigkeiten (41, 42, 43) in der Unterdecke (31) in den Raum (4) eingeleitet wird, wobei der Primärluftstrom (40) im Deckenhohlraum (30) als Induktionsluftstrom einen Sekundärluftstrom (33) erzeugt, der einen Raumluftstrom (32) aus dem Raum (4) in den Deckenhohlraum (30) nachsaugt, mit dem Sekundärluftstrom (33) vermischt und als Tertiärluftstrom (34) über die Undichtigkeiten (41, 42, 43) in der Unterdecke (31) in den Raum (4) einbringt.
Abstract:
Disclosed herein is an air conditioner in the form of an active chilled beam. The chilled beam comprises a housing that defines an interior chamber, in the form of induction chamber. The housing includes a heat exchanger for conditioning return air. The chilled beam also includes a restrictor, in the form of a header and nozzles, and a high induction diffuser mounted to the housing.
Abstract:
Provided in one embodiment is a method of modifying an air flow at least one location of a building structure, comprising: generating a first air flow at the at least one location of the building structure; and modifying a second air flow exterior to the building structure using the generated first air flow. An apparatus configured to modified an air flow is also provided.
Abstract:
The invention concerns a device for reducing air pressure coming from an air conditioning plant for supplying an installation, comprising from upstream to downstream an upstream channel (1), a converging element (3) and a downstream channel (5). This device is characterised in that the ratio of the outlet diameter (d) of the converging element (3) over the diameter (D') of the downstream channel (5) is approximately between 0.25 and 0.70, the downstream channel (5) being closed in its upstream part, so as to generate in the downstream channel (5) an internal peripheral induced flux.
Abstract:
A method and arrangement for distributing air especially to large and/or high spaces, in which method and arrangement air treated according to the use of the space is supplied to the space and distributed therein by an air distributor. To reduce pressure losses, power consumption, and the noise level, air is conducted to flow through a nozzle unit (2) of the air distributor as a strong jet (A), which is surrounded by several smaller nozzles (4), sending out minor jets (B).
Abstract:
Device comprising a filter (10) associated with a ventilation air intake. According to the invention, this device also comprises a blocking component (12) of impermeable material designed to press against the filter (10) to partly or completely cover it, said blocking device being associated with means for controlling its movement, said movement control means being connected to a computing device (18) which receives information consisting of the pressure or flow rate at the outlet of the ventilating unit (2) and which takes action depending on the information transmitted to it to maintain the pressure at a constant value by acting on the position of the blocking component in relation to the filter and/or on the advancement of the filter. Application to the ventilation of premises.