Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
35
30
25
20
15
10
5
0
Class Max RPM
I 2379
II 3103
III 3750
Static Pressure (in. wg)
16
14
12
10
8
6
4
2
BIDW-16
5
3
2
1½
1
¾
15 20 25 30
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
1000
1400
1700
0
0 2 4 6 8 10 12 14 16 18 20
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
700 100 75 79 76 75 72 67 59 53 77
80 74 79 76 75 71 66 59 53 76
60 72 74 76 75 71 66 59 53 76
50 73 74 76 75 71 66 59 53 76
40 72 74 76 75 71 66 59 53 76
1000 100 79 84 83 79 75 73 67 59 81
80 77 83 81 76 73 70 63 55 79
60 76 80 77 75 73 69 63 55 78
50 76 79 77 75 73 69 63 56 78
40 77 80 76 75 73 69 63 56 78
1400 100 87 87 89 87 82 80 77 68 89
80 84 85 88 85 79 76 71 63 86
60 83 83 85 84 78 74 70 65 85
50 86 85 84 84 78 74 71 66 85
40 86 84 84 84 79 74 71 66 85
2000 100 97 97 97 99 95 91 91 89 101
80 96 97 95 98 92 88 86 80 98
60 94 94 92 94 90 86 83 79 95
50 93 93 92 94 89 85 83 79 95
40 94 93 91 93 89 85 83 80 95
2800 100 101 100 101 105 100 97 97 97 106
80 99 97 98 103 97 93 91 88 103
60 95 97 97 99 94 91 89 86 100
50 96 98 97 99 94 91 90 87 100
40 96 100 98 100 94 91 90 87 101
3750 100 109 108 106 112 108 104 103 103 113
80 106 105 104 109 105 100 98 96 110
60 102 105 103 106 102 98 96 94 108
50 102 106 104 106 102 98 97 94 107
40 102 107 105 107 103 99 97 94 108
10
7½
2000
Volume (cfm x 1000)
0 5 10 15 20 25 30
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.
2379
2700
50% WOV
3103
3400
60% WOV
Sound Power [dB Ref 10 -12 watts]
40
3600
3750
70% WOV
80% WOV
90% WOV
19 ®
16 BIDW
% WOV = (CFM X 100) / (RPM X 5.09)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 700 100 90 83 75 68 69 63 53 46 74
80 88 80 75 66 68 61 52 45 73
60 85 77 74 65 67 61 52 45 72
50 87 78 74 65 67 61 52 45 72
40 89 79 74 66 67 61 52 45 72
1000 100 93 85 83 76 75 72 64 53 80
80 92 84 81 74 72 68 59 51 78
60 90 83 80 72 71 66 59 52 77
50 92 83 80 71 71 66 60 53 77
40 94 84 80 71 71 66 60 53 77
1400 100 99 92 93 84 82 80 75 66 89
80 96 90 90 82 79 76 69 59 86
60 96 90 89 80 77 73 68 62 85
50 97 88 87 79 77 73 68 63 84
40 99 91 88 79 78 73 68 63 84
2000 100 105 97 97 96 91 89 86 82 98
80 102 95 94 93 88 85 80 71 94
60 102 93 92 91 85 82 77 72 92
50 103 94 93 91 85 81 77 73 92
40 104 96 93 91 85 82 77 73 92
2800 100 111 104 104 105 100 98 95 94 107
80 110 101 101 102 98 95 90 86 103
60 108 99 99 98 94 91 87 83 100
50 109 102 99 98 94 91 87 83 100
40 111 104 101 98 93 91 87 84 100
3750 100 119 112 110 112 108 106 102 101 114
80 118 110 107 109 105 103 98 94 111
60 117 108 105 105 102 99 95 91 107
50 117 110 106 105 101 98 95 91 107
40 118 113 108 105 101 98 95 91 108