Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
35
30
25
20
15
10
5
0
Class Max RPM
I 943
II 1230
III 1550
Static Pressure (in. wg)
16
14
12
10
8
6
4
2
BIDW-40
60
50
40
30
25
20
15
10
7½
5
75 100
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
400
125 150
50% WOV
200 250
60% WOV
550
650
800
0
0 2 4 6 8 10 12
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
300 100 85 84 82 78 74 68 64 58 80
80 85 84 82 77 74 68 64 58 80
60 84 84 81 77 74 68 63 58 79
50 83 83 81 77 74 68 63 57 79
40 85 83 81 77 74 68 64 58 79
400 100 91 86 85 80 78 72 64 59 83
80 89 83 83 79 77 70 62 57 81
60 85 82 82 79 76 70 62 57 81
50 84 81 82 79 77 70 63 58 81
40 85 81 81 78 77 70 63 59 81
600 100 102 98 94 88 87 81 76 71 92
80 99 94 90 85 86 77 71 67 89
60 97 91 88 84 85 76 71 68 88
50 96 90 87 84 85 76 71 68 88
40 96 90 88 83 85 77 72 69 88
800 100 102 108 101 95 95 90 85 80 100
80 99 106 97 92 90 85 81 77 96
60 96 102 93 88 87 81 78 76 93
50 96 101 92 87 86 81 79 77 92
40 96 100 91 87 86 81 79 77 91
1100 100 108 114 109 104 104 101 97 93 109
80 104 112 106 100 98 94 90 86 104
60 101 107 101 96 94 89 87 85 100
50 101 107 101 96 94 89 87 85 100
40 105 107 101 95 93 89 87 86 99
1550 100 114 119 122 114 111 110 106 102 118
80 110 117 120 111 107 103 99 96 115
60 107 112 115 106 103 99 95 93 110
50 107 113 115 106 102 99 95 94 110
40 111 114 115 105 101 98 96 94 110
Volume (cfm x 10,000)
0 2 4 6 8 10 12 14 16 18 20
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.
943
1100
Sound Power [dB Ref 10 -12 watts]
1230
1350
1450
1550
70% WOV
80% WOV
90% WOV
37 ®
40 BIDW
% WOV = (CFM X 100) / (RPM X 71.9)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 300 100 86 83 77 74 71 63 55 46 76
80 85 82 76 73 70 63 54 45 75
60 81 79 75 71 69 61 52 44 73
50 82 79 75 71 69 61 52 44 74
40 80 78 74 71 69 61 52 44 73
400 100 101 89 82 79 76 70 61 55 82
80 96 86 79 76 74 67 59 53 79
60 96 86 77 74 71 66 57 52 78
50 93 84 76 74 71 66 57 53 77
40 92 83 76 74 71 66 58 53 77
600 100 110 103 92 89 86 81 74 68 93
80 106 101 89 86 82 78 71 66 90
60 102 95 85 82 79 74 68 64 86
50 101 94 85 81 78 74 68 64 85
40 102 95 84 80 78 74 69 65 85
800 100 106 110 99 97 94 90 84 78 100
80 104 107 96 94 90 85 79 73 97
60 100 104 92 90 86 80 76 73 93
50 100 103 91 89 85 80 76 73 92
40 101 103 90 88 84 80 77 73 92
1100 100 111 114 108 106 104 102 97 91 109
80 108 111 104 103 99 95 92 85 105
60 105 108 99 99 95 89 86 82 101
50 105 106 99 98 94 88 86 82 99
40 107 105 98 97 93 88 86 82 99
1550 100 117 120 121 115 113 110 107 102 119
80 114 117 118 111 108 105 101 96 115
60 111 114 115 107 104 99 95 91 110
50 111 113 113 106 103 98 95 92 109
40 112 113 112 105 102 98 94 92 109