Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
35
30
25
20
15
10
5
0
Class Max RPM
I 1051
II 1371
III 1727
Static Pressure (in. wg)
16
14
12
10
8
6
4
2
BIDW-36
60
50
40
30
25
20
15
10
7½
5
75 100 125
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
450
600
750
900
0
0 1 2 3 4 5 6 7 8 9 10
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
300 100 82 81 79 75 71 65 61 55 77
80 81 81 79 75 71 65 61 55 77
60 80 81 78 74 71 65 60 55 76
50 80 79 78 74 71 65 60 54 76
40 81 80 78 74 71 65 61 55 76
400 100 87 83 82 77 75 69 61 56 80
80 85 80 80 76 74 67 59 54 78
60 81 78 79 76 73 67 59 54 78
50 80 78 79 76 74 67 61 55 78
40 81 78 78 75 74 67 60 56 78
600 100 98 95 91 85 85 78 73 68 89
80 95 91 87 82 83 74 68 64 86
60 93 88 85 81 82 73 68 65 85
50 92 87 84 81 82 73 68 65 85
40 93 87 85 80 82 74 69 66 85
800 100 98 105 98 92 92 87 82 77 97
80 95 103 94 89 87 82 78 74 93
60 93 99 90 85 84 78 75 73 90
50 92 98 89 84 83 78 76 74 89
40 92 97 88 84 83 78 76 74 88
1200 100 106 112 109 104 102 100 96 92 108
80 102 110 106 100 98 93 89 86 104
60 98 106 102 96 93 88 86 84 99
50 99 105 102 96 93 88 86 84 99
40 103 105 101 95 92 88 87 85 99
1727 100 112 118 122 114 111 109 106 102 118
80 109 115 120 111 106 104 99 96 115
60 105 111 116 106 102 99 95 93 110
50 106 111 115 106 102 99 95 93 110
40 110 114 115 106 101 99 95 94 110
Volume (cfm x 10,000)
0 2 4 6 8 10 12 14 16
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.
150
1051
1200
50% WOV
200
1371
1500
60% WOV
Sound Power [dB Ref 10 -12 watts]
1600
1727
70% WOV
80% WOV
90% WOV
35 ®
36 BIDW
% WOV = (CFM X 100) / (RPM X 54.7)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 300 100 83 80 74 71 68 60 52 43 73
80 82 79 74 70 67 60 51 42 72
60 78 76 72 68 66 58 49 41 70
50 79 76 72 68 66 58 49 41 71
40 77 75 71 68 66 58 49 41 70
400 100 98 86 79 76 73 67 58 52 79
80 93 83 76 73 71 64 56 50 76
60 93 83 74 71 68 63 54 49 75
50 90 81 73 71 68 63 54 50 74
40 89 80 73 71 68 63 55 50 74
600 100 107 100 89 86 83 78 71 65 90
80 103 98 86 83 79 75 68 63 87
60 99 92 82 79 76 71 65 61 83
50 98 91 82 78 75 71 65 61 82
40 99 92 81 77 75 71 66 62 82
800 100 103 107 96 94 91 87 81 75 97
80 101 104 93 91 87 82 76 70 94
60 97 101 89 87 83 77 73 70 90
50 97 100 88 86 82 77 73 70 89
40 98 100 87 85 81 77 74 70 89
1200 100 109 113 108 106 103 101 97 91 109
80 107 110 104 102 99 95 91 84 104
60 103 106 100 98 94 89 85 81 100
50 103 105 99 97 93 88 86 81 99
40 105 104 99 96 92 87 85 81 98
1727 100 116 119 122 114 112 110 107 102 119
80 113 116 119 110 108 105 101 96 115
60 110 113 116 106 104 100 95 91 111
50 110 112 114 105 103 99 95 92 109
40 111 113 113 104 102 98 94 92 109