adjustable blade supply air

Publication GRILLES section 1 SEPT 2005 Part B R Aluminium Grilles supply, exhaust and transfer ventilation systems adjustable blade supply air introduction control sizes finish The SD and DD range of single and double deflection supply grilles are suitable for most commercial applications and can be utilised in exposed duct, ceiling or sidewall situations. The individually adjustable blades provide complete spread and directional jet control up to 45O from the discharge axis. Standard fixing method is by countersunk screw through the flange - SC ordering details type control borders fixing finish SDH / OB / 32 / SC / SAA / 1000 / 500 / 6 width height quantity For all additional available options, border styles, fixings, finishes and plenums see document PART L example: options Standard finish is satin anodised aluminium - SAA The SD/DD range is available in sizes ranging from 100mm x 100mm to a maximum of 1200mm x 1200mm. Larger sizes can be supplied in sections. type fixings Opposed blade volume control damper - OB Adjustable supply air SINGLE / DOUBLE DEFLECTION SDH - SDV - DDH - DDV 2 80 OB Damper Nom Size +45 32 5 Nom Size -19 32 SDH/OB SDH SDV SDV/OB Nom Duct and Grille Size Single deflection with Horizontal Front Blades Single deflection with Vertical Front Blades DDH/OB DDH DDV DDV/OB Double deflection with Horizontal Front Blades Double deflection with Vertical Front Blades 96 48 19 DIMENSIONS Adjustable supply air R 3 AIR FLOW RATE 3000 2500 2000 1500 900 800 700 600 500 400 300 250 1000 200 150 100 50 10000 9000 8000 7000 6000 5000 4000 3000 2000 1500 1000 900 800 700 600 500 400 300 200 30 20 15 10 8 6 40 5 4 3 12 20 15 12 10 8 3 6 5 4 50 40 30 20 60 50 40 30 20 60 15 10 5 4 3 2 1 0.5 1.5 0.75 50 40 30 20 60 15 10 5 50 40 30 20 15 10 5 60 200 300 400 150 500 600 1000 1200 100 200 400 500 600 1000 1200 300 150 NOMINAL WIDTH (mm) NOMINAL HEIGHT (mm) PIVOT LINE GRILLE FACE VELOCITY (m/s) NR LEVEL THROW (m) Vt = 0.5 m/s STATIC PRESSURE LOSS (Pa) 0O 45O PIVOT LINE PIVOT LINE 0O 45O 0O 45O l/s m3/hr Adjustable supply air SELECTION NOMOGRAM 4 300mm x 150mm SDH GRILLE PASSING AN AIR FLOW RATE OF 220 l/s TERMINAL VELOCITY CORRECTION FACTORS TEMPERATURE CORRECTION FACTORS SELECTION EXAMPLE Vt (m/s) FACTOR 0.6 0.85 0.4 1.2 0.25 1.5 DIFFERENTIAL TEMPERATURE FACTOR 0O 1.1 +10OC 1.2 Throw (m) Vt = 0.5ms DEFLECTION THROW (m) NR Ps (Pa) GRILLE 0O DEF 24 33 14 GRILLE 45O DEF 13 37 24 Throw data is based on a confined jet with a terminal velocity (Vt) of 0.5m/s and a cooling differential of 10oC. Where the grille is to be positioned 600mm or more from a surface, the throws will be reduced by a factor of 0.7. throws Additional factors can be applied to correct for other terminal velocities and temperature differentials. Jet drops can also be estimated from the nomogram on page 12 of PART L. Acoustic data is presented in terms of NR levels based on a room absorbtion factor of 8dB. example correction factors Adjustable supply air BASIS OF DATA R 5 introduction The HD grille is a heavy duty version of the SD/DD range and is ideally suited to industrial applications requiring a robust yet versatile form of air terminal. As with the SD/DD range, the HD grille is suitable for exposed duct, ceiling or side wall mounting. Standard fixing method is by countersunk screw through the flange - SC ordering details type control borders fixing finish HD/SDH / OB / 38 / SC / SAA /1000/ 500 / 6 width height quantity example: control sizes finish For all additional available options, border styles, fixings, finishes and plenums see document PART L options Standard finish is satin anodised aluminium - SAA type fixings Opposed blade volume control damper - OB HD/SDH - HD/SDV - HD/DDH - HD/DDV

For more information on adjustable blade supply air talk to Brooke Air Sales