Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
35
30
25
20
15
10
5
0
Class Max RPM
I 575
II 750
III 945
Static Pressure (in. wg)
16
14
12
10
8
6
4
2
BIDW-66
200
150
125
100
75
60
50
40
250 300 350 400 450
250
350
425
500
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
180 100 89 86 83 79 74 69 63 57 81
80 89 86 83 79 74 69 63 57 81
60 88 86 82 79 74 68 63 57 80
50 87 85 82 79 74 68 63 56 80
40 88 85 82 79 74 69 64 58 80
250 100 93 90 86 84 79 72 66 60 85
80 90 88 85 82 77 69 63 58 83
60 88 87 85 82 77 70 64 58 83
50 87 86 84 82 77 70 65 59 83
40 87 86 84 82 77 70 65 60 83
350 100 104 98 92 91 86 80 75 70 92
80 101 95 90 89 83 76 71 68 89
60 98 92 88 88 82 76 72 69 88
50 97 91 88 88 82 76 72 69 88
40 97 91 88 88 82 77 73 70 89
500 100 112 108 101 100 96 91 86 81 102
80 109 105 98 96 91 87 83 79 98
60 106 101 94 92 88 84 82 79 94
50 105 100 93 92 87 84 82 80 94
40 104 99 93 91 87 85 82 80 94
700 100 117 118 111 109 107 103 99 96 112
80 115 116 107 104 100 96 93 89 107
60 111 111 103 100 96 93 91 89 103
50 110 111 103 100 96 93 91 89 103
40 112 110 102 99 95 93 92 90 103
945 100 122 127 120 116 115 111 107 104 120
80 119 125 116 112 109 105 101 97 115
60 115 120 112 107 105 100 98 96 111
50 115 120 112 107 105 100 98 97 111
40 118 120 111 106 104 100 99 97 111
Volume (cfm x 10,000)
0 5 10 15 20 25 30 35 40 45 50
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.
575
675
50% WOV
60% WOV
Sound Power [dB Ref 10 -12 watts]
750
825
875
945
70% WOV
80% WOV
90% WOV
47 ®
66 BIDW
% WOV = (CFM X 100) / (RPM X 317)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 180 100 88 83 79 76 69 61 52 44 77
80 87 82 78 75 69 61 51 42 76
60 84 80 76 73 67 58 50 42 74
50 84 80 76 73 67 58 50 42 74
40 83 79 75 73 67 58 50 42 74
250 100 98 89 84 82 77 69 62 55 83
80 94 86 82 79 74 66 60 54 81
60 94 85 80 77 72 65 58 53 79
50 92 84 79 77 72 65 59 55 78
40 91 83 79 77 73 65 59 55 78
350 100 110 98 93 90 85 79 73 66 92
80 107 95 89 87 82 76 70 65 89
60 102 91 86 83 79 73 68 64 85
50 101 90 85 82 78 73 69 65 85
40 102 90 85 82 78 73 69 65 85
500 100 114 107 102 100 96 91 85 78 102
80 112 104 100 96 91 86 80 73 98
60 109 100 95 92 87 82 79 75 94
50 107 99 94 91 86 82 79 75 93
40 108 99 94 90 86 82 79 76 93
700 100 118 118 112 110 108 104 98 93 113
80 115 114 108 106 102 98 92 85 108
60 112 110 104 101 96 92 88 84 103
50 111 109 103 100 95 92 89 84 102
40 111 108 102 99 95 92 89 84 102
945 100 123 127 119 118 115 112 107 102 121
80 121 124 115 114 110 106 102 95 116
60 117 120 111 110 105 100 97 92 112
50 117 119 110 108 104 100 97 93 111
40 118 118 109 108 103 99 97 93 110