Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
30
25
20
15
10
5
0
Class Max RPM
I 2908
II 3792
III 4100
Static Pressure (in. wg)
14
12
10
8
6
4
2
BIDW-13
2
1½
1
¾
½
7½
3
5
10 15
1200
1700
2100
2500
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
0
0 2 4 6 8 10 12
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
850 100 71 77 75 74 71 67 59 53 76
80 71 76 75 74 71 66 59 53 75
60 69 71 74 74 70 66 59 53 75
50 70 71 74 74 70 66 59 53 75
40 69 71 74 74 70 66 59 53 75
1200 100 76 80 81 77 74 72 67 59 80
80 74 79 81 75 72 69 63 55 78
60 73 76 76 74 71 68 63 55 76
50 73 75 75 73 72 68 63 56 76
40 74 75 74 73 72 69 63 56 76
1700 100 85 84 88 86 81 79 77 68 88
80 83 81 86 85 79 75 71 63 85
60 82 80 82 84 78 73 70 64 84
50 84 83 81 84 78 73 71 66 84
40 85 82 82 84 78 73 71 66 84
2400 100 94 96 93 98 94 89 89 88 99
80 92 97 90 97 91 86 85 79 97
60 91 94 88 93 89 84 82 78 94
50 91 92 88 93 88 84 82 78 93
40 91 91 88 92 88 84 82 79 93
3500 100 101 99 98 105 100 96 95 96 106
80 98 96 95 102 97 92 91 88 103
60 93 96 94 99 95 90 89 86 100
50 94 98 95 98 94 90 89 86 100
40 93 99 96 100 94 91 89 87 101
4100 100 103 103 102 107 105 100 98 99 109
80 100 101 99 104 101 96 94 92 106
60 96 99 98 101 99 94 92 90 103
50 96 101 99 101 98 94 93 90 103
40 96 102 101 103 99 95 93 90 104
Volume (cfm x 1000)
0 2 4 6 8 10 12 14 16 18 20
3
Volume (m /hr x 1000)
RPM
BHP
% WOV
Density 0.075 lb/ft 3
Density 1.2 kg/m 3
The sound power level ratings shown are in decibels, referred to 10 -12 watts calculated per AMCA Standard 301. Values shown are for inlet Lwi, LwiA and outlet
Lwo, LwoA sound power levels for Installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction. The A-weighted sound
ratings shown have been calculated per AMCA International Standard 301.
2908
50% WOV
20
3400
3792
4100
60% WOV
Sound Power [dB Ref 10 -12 watts]
70% WOV
80% WOV
90% WOV
15 ®
13 BIDW
% WOV = (CFM X 100) / (RPM X 2.79)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 850 100 89 83 76 66 67 63 53 46 74
80 87 79 76 65 67 61 52 45 72
60 85 76 75 64 66 61 52 45 71
50 87 76 75 64 66 61 52 45 71
40 89 78 75 64 66 61 53 45 72
1200 100 95 83 83 74 73 72 64 54 80
80 92 81 81 71 71 68 59 51 78
60 91 80 81 69 71 66 59 52 76
50 93 80 81 69 70 66 59 52 77
40 96 81 81 69 71 66 60 53 77
1700 100 100 88 94 83 80 79 75 66 89
80 97 87 91 81 78 76 69 60 86
60 97 87 91 78 77 73 67 61 85
50 99 86 88 78 77 73 68 62 83
40 101 89 89 78 77 73 68 63 84
2400 100 105 95 95 96 89 88 85 81 97
80 103 92 92 92 86 84 80 71 93
60 103 91 90 91 84 81 76 71 91
50 105 92 91 91 83 80 76 72 91
40 105 95 92 91 83 81 76 72 91
3500 100 112 104 102 105 100 98 94 93 106
80 111 101 99 102 97 95 90 86 103
60 110 99 97 98 94 92 87 83 100
50 110 102 98 98 93 91 87 83 100
40 111 104 101 98 93 90 87 84 100
4100 100 115 109 106 108 104 101 98 97 110
80 114 106 102 105 102 99 94 90 107
60 113 105 101 101 98 95 91 87 103
50 113 107 102 101 98 94 91 87 104
40 114 109 105 102 97 94 91 88 104