Swirl air vents of the NWQ-2 series are especially useful as airsupply vents and air-exhaust vents in comfort conditioning systems in places such as office and commercial spaces. Swirl, horizontal air-supply assures a high level of induction, fast balancing of temperature and fast decrease of the stream speed. These air vents are best for supplying air with the temperaturre difference from +10 to -10K in rooms higher then 2.80m. Swirl air vents of the NWQ-2 series are made of a square front plate with a sealing tape and fixed air-directing elements, placed radially. In order to archive a low level of accoustic power, especially at high efficiency, triangular airdirecing elements reach the corners of the square air vent.
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