T 2.2/5/EN/2 Swirl Diffusers Type FDE with fixed air control blades for high volume flow rates

2Materials 2Construction Dimensions ׷ Installation 3Nomenclature 4Acoustic Data 4Aerodynamic Data 5Order Details 6 Type FDEType FDE-...-H (with plenum box) > Type FDE swirl diffusers as supply or extract air units are particularlysuitable for comfort areas like office and department stores.The horizontal swirl type discharge of supply air ensures highinduction and hence rapid reduction in jet velocity and temperature differential.The air diffusers are suitable for supply air temperature differentialsin the range of +10K to 10K and room heights from 2.80 m.Swirl diffusers type FDE consist of the...

Swirl diffuser type FDE FDE with plenum box > 478 598(623) Q546 > Suspension by customer on siteusing holes providedSeal must be attached toplenum box by customer Fixing the diffuser face usingcentre screw > 6 Test nipple Plastic tube Plenum box Diffuser face Inclined manometer Green sheathed cable for closing the damper White sheathed cable for opening the damper p > w Code >

Nomenclature Acoustic Data Nomenclature V in l/s (m3/h): A, B in m: L in m: X in m: H1 in m: Aeff in m2: Vl in m/s: VH1 in m/s: AtZ in K: AtL in K: Apt in Pa: LWA in dB(A): LWNC LWNR LpA, LpNC : a in °: Volume flow rate per diffuser Spacing between two diffusers Distance horizontal + vertical (X + H-,) when discharging towards the wall Distance from centre of diffuser to the wall Distance between ceiling and occupied zone Effective outlet area 0.04467 m2 (supply air) Max. time average air velocity at the wall Max. time average air velocity between two diffusers at distance H! from the ceiling...

H > 1 =1.0 1.8 1.21.62.4 m2 A=1.835.4m 1.8 3.6 > âȆ t L 400 (1440) ∆ t > Z = 400 l/s 350 (1260) > 350 300 (1080) > 300 (1440m Z 250 t 250 (900) > (1260) ǢȆ 200 (1080) / L (900) 3 t /h) ∆ 200 (720) > 150 (720) (540) 100 150 (540) > (360) in m/s 125 (450) > H1 in m/s L Ã 0.200.250.300.400.500.60 =100 (360) > Temperature quotient l/s (m > 3 /h) > 0.15 0.100.150.200.250.300.40 0.020.030.040.050.060.080.100.12 2.4345678 2.4345678 2.4 Spacing A in m Distance L in m >

Spcification text Type FDE swirl diffuser with square face and fixed air control blades for swirling horizontal discharge with high induction. Diffuser face consists of angled triangular shaped blades which extend into the corners includes a rear mounted frame complete with perforated plate to optimise the air distribution. Type FDE swirl diffuser is supplied with plenum box and - on request - with damper and/or lip seal. Also on request to measure the reference pressure the plenum can be provided with a sheathed cable adjusted volume control damper and measuring nipple. The diffuser face is...