Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
35
30
25
20
15
10
5
0
Class Max RPM
I 1279
II 1668
III 2102
Static Pressure (in. wg)
16
14
12
10
8
6
4
2
BIDW-30
40
25
20
15
10
7½
5
3
50 60 75
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
550
750
900
1100
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Volume (cfm x 1000)
0 20 40 60 80 100
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.
1279
1450
50% WOV
1668
1800
60% WOV
30 2102
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
400 100 86 84 82 74 70 62 56 53 77
80 85 83 79 71 67 59 54 52 75
60 83 82 76 71 67 59 54 53 73
50 82 81 74 71 67 59 55 53 73
40 82 82 72 71 67 59 55 53 73
600 100 94 90 86 80 79 73 64 61 84
80 93 87 84 78 77 70 62 60 82
60 89 84 81 77 75 68 62 60 80
50 89 84 80 76 75 68 63 60 79
40 87 83 79 76 75 68 63 61 79
800 100 94 98 91 88 84 81 75 72 90
80 91 95 88 86 81 77 72 71 88
60 89 91 86 85 80 76 73 72 86
50 89 90 85 85 80 76 74 72 86
40 92 89 84 84 80 76 74 73 86
1100 100 98 99 102 95 92 89 85 82 99
80 95 96 99 92 89 85 82 80 95
60 92 92 94 89 86 82 81 80 92
50 93 91 93 88 86 82 82 80 92
40 94 91 92 87 85 82 82 80 91
1500 100 104 104 112 103 100 98 95 89 108
80 101 100 108 100 96 93 89 85 103
60 97 96 104 96 94 90 87 85 100
50 97 96 102 95 93 90 88 86 99
40 100 97 100 94 92 90 88 87 98
2102 100 112 111 118 114 109 107 104 99 116
80 109 108 113 111 105 102 99 95 112
60 105 104 109 107 102 99 96 93 108
50 105 104 108 105 101 98 96 94 107
40 109 106 107 104 100 98 96 95 107
100
125
Sound Power [dB Ref 10 -12 watts]
1950
70% WOV
80% WOV
90% WOV
31 ®
30 BIDW
% WOV = (CFM X 100) / (RPM X 30.4)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 400 100 86 84 78 74 70 59 52 48 76
80 83 81 76 71 65 54 48 47 73
60 77 77 70 71 64 54 50 48 71
50 78 76 68 70 64 54 50 47 70
40 82 79 69 69 66 56 51 48 71
600 100 101 96 84 80 79 72 63 57 85
80 101 95 83 78 75 66 59 53 83
60 95 88 77 75 73 65 60 56 79
50 91 86 75 74 73 65 61 57 78
40 93 87 75 73 73 65 61 57 78
800 100 97 101 90 87 85 81 73 66 91
80 94 98 87 83 81 76 69 63 87
60 92 94 83 79 78 71 67 64 84
50 92 91 82 78 77 71 68 64 82
40 95 92 81 77 77 73 69 65 83
1100 100 102 103 102 96 94 90 85 77 100
80 98 99 98 92 90 84 79 72 95
60 95 96 95 88 85 80 77 74 92
50 95 95 94 87 84 80 77 74 91
40 97 95 93 86 83 80 78 74 90
1500 100 109 108 107 105 103 99 96 87 108
80 105 104 104 101 99 94 89 82 103
60 102 101 101 97 95 89 86 81 100
50 102 101 99 95 93 88 86 81 98
40 106 102 97 93 91 87 86 83 97
2102 100 116 116 115 113 111 108 105 99 116
80 112 112 112 110 107 103 99 93 112
60 108 109 109 106 103 99 95 91 108
50 108 108 107 104 102 97 94 91 107
40 113 111 106 102 99 96 94 92 106