Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
35
30
25
20
15
10
5
0
Class Max RPM
I 775
II 1011
III 1274
Static Pressure (in. wg)
16
14
12
10
8
6
4
2
BIDW-49
100
75
60
50
40
30
25
20
15
125 150 200
450
350
550
650
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
0
0 2 4 6 8 10 12 14 16 18
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
250 100 88 86 83 79 75 69 64 58 81
80 88 86 83 78 75 69 64 58 81
60 86 85 82 78 75 69 64 58 80
50 86 84 82 78 75 69 64 57 80
40 87 84 82 78 75 69 64 59 80
350 100 93 89 87 83 80 73 66 61 85
80 91 86 85 82 79 72 64 59 84
60 88 85 85 81 78 71 64 59 83
50 86 84 84 81 78 72 66 60 83
40 87 84 84 81 78 72 66 61 83
500 100 105 99 94 89 88 82 76 71 93
80 102 95 91 87 86 78 72 68 90
60 100 92 89 86 85 77 72 69 89
50 99 91 88 86 85 77 73 70 89
40 100 91 89 86 86 78 73 71 89
700 100 106 110 103 98 97 92 87 82 102
80 104 107 99 95 92 87 83 79 98
60 101 104 95 91 89 84 81 79 95
50 100 102 94 90 88 84 82 79 94
40 100 101 93 90 88 84 82 79 94
900 100 111 117 109 105 104 101 97 93 110
80 108 115 106 101 99 94 91 87 105
60 104 110 101 97 94 90 88 86 101
50 105 110 101 97 94 90 88 86 101
40 107 109 101 96 94 90 89 87 100
1274 100 117 122 121 114 113 110 107 103 119
80 114 120 118 111 108 104 100 96 114
60 110 116 113 106 104 99 96 94 110
50 111 115 113 106 104 99 96 95 110
40 115 116 113 105 103 99 97 95 110
Volume (cfm x 10,000)
0 5 10 15 20 25 30
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.
775
250
900
50% WOV
60% WOV
300
350
70% WOV
Sound Power [dB Ref 10 -12 watts]
1011
1100
1200
1274
80% WOV
90% WOV
41 ®
49 BIDW
% WOV = (CFM X 100) / (RPM X 130)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 250 100 88 83 78 75 72 63 54 46 77
80 87 82 77 74 71 63 54 45 76
60 83 80 76 72 69 61 51 44 74
50 84 80 76 72 70 61 52 44 74
40 82 80 75 72 70 61 52 44 74
350 100 102 91 84 81 78 71 63 57 84
80 97 88 81 79 75 69 61 55 81
60 97 87 79 77 73 67 59 54 80
50 95 85 79 76 73 67 59 55 79
40 94 85 79 76 73 68 60 55 79
500 100 112 102 93 90 86 81 75 68 94
80 109 99 90 87 83 78 72 66 91
60 105 94 86 83 80 75 69 65 87
50 104 93 85 82 79 74 69 65 86
40 105 94 85 82 79 74 69 66 86
700 100 110 111 102 100 97 92 86 80 102
80 108 108 99 97 92 87 81 75 99
60 104 105 94 92 88 83 79 75 95
50 104 103 93 91 87 82 79 75 94
40 104 103 93 90 86 82 79 75 94
900 100 114 117 109 107 105 102 97 91 110
80 111 114 105 104 100 96 91 84 106
60 107 110 101 99 95 90 86 82 101
50 107 109 100 98 94 89 87 82 100
40 108 108 99 97 93 89 87 82 100
1274 100 119 123 120 116 114 111 107 102 119
80 117 120 116 112 109 105 102 95 115
60 113 116 112 108 105 99 96 92 110
50 113 115 111 107 104 99 96 92 109
40 115 115 110 106 103 98 96 92 109