Ventilation grille/Special grille lindab | grilles B3020/B Technical data 1 Capacity Volume flow qv [l/s] and [m3/h], total pressure drop Δpt [Pa], Dimensioning diagram – supply air throw l0.2 [m] and sound level LWA [dB(A)] can be seen in the 2 diagrams. ǻpt [Pa] B-3020 0.0072 0.01 0.015 0.02 0.03 0.05 0.087 150 F [m2] Throw l0.2 100 70 Throw l0.2 [m] at an average speed of 0.2 m/s, 0o bar setting 50 without ceiling effect (distance from diffuser to grille over 800 mm) can be seen in the diagrams. Correction for disper- 30 sal - see table below. 20 3 50 45 40 4 35 15 30 Bar setting 45o Correction factor 0,8 Sound effect level LWA 90o 0,5 10 25 7 20 5 LWA dB(A) 5 qV [l/s] 20 30 40 50 60 100 150 200 300 500 700 1000 2000 100 150 200 300 400 700 1000 qV [m3/h] 2000 3000 5000 7000 6 Sound effect level LWA [dB(A)] at 0o bar setting can be seen in the diagrams. The sound levels apply for grilles without a Dimensioning diagram - exhaust 7 volume regulator. See the table below for correction of sound level on dispersal [dB]. Bar setting 45o 90o ǻpt [Pa] B-3020 150 0.0072 0.01 0.015 0.02 0.03 0.05 0.087 F [m2] 100 8 70 Correction factor +3 +10 50 30 50 9 20 45 15 Frequency-related sound effect level 10 The sound effect level in the frequency band is defined as 7 40 35 30 10 LWA+Kok. The Kok values are given in chart. See table below. 5 3 20 30 40 50 60 25 100 150 200 300 LWA dB(A) 500 700 1000 qV [l/s] 2000 11 Centre frequency Hz 100 150 200 300 400 700 1000 qV [m3/h] 2000 3000 5000 7000 63 125 250 500 1K 2K 4K 8K Supply air Exhaust 1 -4 -2 0 -6 -10 -14 -19 -3 -8 -3 -1 -3 -12 -19 -22 Throw 12 Volume regulator GAT Correction of total pressure pt [Pa] and sound effect level LWA [dB(A)] using volume regulator. See table below. Supply air Pressure [Pa] Sound power level [dB(A)] Open x1,3 +5 45o Closed x3 x12 +12 +32 Exhaust Pressure [Pa] Sound power level [dB(A)] Open x1,3 +3 45o Closed x3 x10 +12 +30 l0.2 [m] B3020 30 0.005 0.01 0.02 0.03 0.05 F [m2] 0.1 20 15 10 8 7 6 5 20 30 80 100 40 50 60 70 100 150 200 300 150 200 500 700 300 1000 l0.2 [m] qV [l/s] 500 qV [m3/h] 1500 2000 13 14 15 16 17 18 We reserve the right to make changes without prior notice 435
Download PDF file