Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
35
30
25
20
15
10
5
0
Class Max RPM
I 520
II 678
III 854
Static Pressure (in. wg)
16
14
12
10
8
6
4
2
BIDW-73
250 300 350 400 450
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
0
0 4 8 12 16 20 24 28 32 36 40
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
150 100 87 85 81 77 71 67 61 55 79
80 87 85 80 77 71 67 61 55 79
60 87 84 80 77 71 66 61 55 78
50 85 84 80 77 71 66 60 53 78
40 86 84 80 77 71 67 61 56 78
200 100 89 88 83 81 75 67 62 57 82
80 86 86 82 80 73 65 60 54 80
60 84 85 82 80 73 65 60 55 80
50 84 85 82 80 73 67 61 56 80
40 84 85 81 80 73 66 62 57 80
300 100 101 97 90 91 84 79 74 69 91
80 97 94 88 89 80 74 70 66 89
60 94 91 87 88 79 74 71 68 88
50 93 90 86 88 79 74 71 68 88
40 93 91 86 88 80 75 72 70 88
400 100 111 104 98 98 93 88 83 78 99
80 108 100 95 93 88 84 80 76 95
60 105 96 91 90 84 81 79 77 92
50 104 95 90 89 84 82 80 77 91
40 102 94 90 89 84 82 80 78 91
600 100 118 116 109 109 106 102 98 95 111
80 116 112 106 104 99 95 92 88 106
60 112 108 102 100 94 92 90 88 102
50 111 108 101 99 94 92 90 89 102
40 111 107 101 98 94 93 91 89 101
854 100 124 128 120 116 115 112 108 104 121
80 121 126 116 112 109 105 101 98 116
60 117 122 112 108 105 101 99 97 112
50 117 121 112 108 105 101 99 97 112
40 119 121 111 107 104 101 99 98 111
200
150
125
100
75
60
50
225
300
375
450
520
Volume (cfm x 10,000)
0 10 20 30 40 50 60
3
Volume (m /hr x 10,000)
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.
600
50% WOV
60% WOV
678
725
800
854
70% WOV
Sound Power [dB Ref 10 -12 watts]
80% WOV
90% WOV
49 ®
73 BIDW
% WOV = (CFM X 100) / (RPM X 429)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 150 100 86 81 77 74 66 58 49 41 75
80 85 80 76 73 66 57 48 39 74
60 82 78 74 72 64 55 47 39 72
50 82 78 74 72 64 55 47 39 72
40 81 77 74 72 64 55 47 39 72
200 100 92 85 82 79 73 64 58 52 80
80 89 82 79 77 70 62 56 50 77
60 89 80 77 74 69 60 55 50 75
50 87 79 76 74 69 60 56 51 75
40 86 79 77 74 69 61 56 52 75
300 100 106 95 92 89 84 77 71 64 90
80 103 92 89 86 81 74 69 63 87
60 98 88 85 82 77 71 67 63 84
50 97 88 84 81 77 71 67 64 83
40 98 88 83 81 77 72 68 64 83
400 100 113 102 100 97 93 87 81 74 99
80 110 99 97 93 88 82 76 70 95
60 107 95 93 89 83 79 76 72 91
50 105 94 92 88 83 79 76 72 90
40 106 93 91 87 83 80 76 73 90
600 100 119 114 111 109 107 103 97 91 112
80 116 110 108 105 101 97 90 83 107
60 112 106 104 100 95 91 87 83 102
50 111 105 103 99 94 92 87 83 101
40 110 105 102 98 93 91 87 83 100
854 100 125 128 120 118 116 113 108 102 121
80 122 125 116 114 110 107 102 95 117
60 119 122 112 110 105 101 97 92 112
50 118 120 111 109 104 100 97 93 111
40 119 119 110 108 103 100 97 93 110