Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
40
35
30
25
20
15
10
5
0
Class Max RPM
I 2149
II 2801
III 3530
Static Pressure (in. wg)
18
16
14
12
10
8
6
4
2
BIDW-18
20
15
10
7½
5
3
2
1½
1
25 30 40
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
900
1200
1500
1800
0
0 2 4 6 8 10 12 14 16 18 20 22 24
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
600 100 76 75 74 76 68 62 56 51 75
80 74 73 71 74 67 60 54 50 73
60 73 70 69 74 67 60 54 50 73
50 72 70 69 74 67 60 54 50 73
40 72 70 68 75 67 60 54 50 74
900 100 78 89 84 82 77 72 65 60 83
80 78 87 82 78 72 68 60 54 80
60 75 82 77 77 72 67 60 55 78
50 74 79 75 76 72 67 61 56 77
40 76 78 74 76 72 67 61 56 77
1200 100 83 90 90 89 84 81 74 69 90
80 82 86 87 87 80 77 69 65 87
60 82 82 82 83 79 76 69 65 84
50 78 81 80 82 78 75 69 65 83
40 78 82 80 82 78 75 70 66 83
1700 100 89 91 97 94 90 88 82 77 96
80 86 89 94 92 89 85 79 74 94
60 86 85 92 88 85 82 76 73 90
50 85 85 89 87 84 81 77 74 89
40 87 86 89 86 84 81 77 74 89
2500 100 97 99 102 107 99 96 92 88 106
80 95 97 99 104 96 93 88 85 103
60 92 92 98 99 94 91 87 85 100
50 93 92 98 98 93 91 87 85 99
40 95 94 98 99 92 91 89 87 100
3530 100 103 107 109 112 110 105 102 98 114
80 101 105 106 110 108 102 98 94 111
60 98 101 103 106 104 100 97 93 108
50 99 102 104 105 103 99 96 93 108
40 101 104 105 105 103 99 97 95 108
Volume (cfm x 1000)
0 5 10 15 20 25 30 35 40
3
Volume (m /hr x 1000)
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.
2149
2500
50% WOV
2801
3000
60% WOV
Sound Power [dB Ref 10 -12 watts]
50
3300
3530
70% WOV
80% WOV
90% WOV
21 ®
18 BIDW
% WOV = (CFM X 100) / (RPM X 6.52)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 600 100 89 80 74 68 66 59 52 47 72
80 89 79 71 64 63 54 47 44 70
60 81 75 68 62 61 54 47 45 67
50 80 74 67 62 62 54 48 45 66
40 81 74 67 63 62 54 48 45 67
900 100 93 95 85 78 77 71 64 58 84
80 89 92 83 74 72 65 58 53 80
60 86 84 77 73 69 64 58 54 76
50 86 82 75 72 69 63 58 54 75
40 88 83 75 71 68 63 58 55 74
1200 100 100 92 90 85 85 80 74 67 89
80 95 90 88 82 81 74 67 61 86
60 91 86 83 77 77 71 65 61 81
50 91 85 82 76 76 71 65 61 80
40 92 85 80 75 75 70 65 62 80
1700 100 104 96 97 92 92 88 84 76 96
80 102 93 95 90 91 86 80 73 94
60 99 90 92 86 86 82 76 71 91
50 99 91 91 85 85 80 75 71 89
40 100 91 91 84 83 80 75 71 89
2500 100 110 105 104 111 103 98 94 89 110
80 107 102 100 106 99 94 90 84 106
60 104 97 96 99 96 92 87 82 101
50 105 98 95 98 94 90 86 82 99
40 108 101 96 95 93 89 86 82 98
3530 100 116 115 112 116 114 108 104 99 118
80 113 112 108 112 110 104 99 94 114
60 110 108 104 105 105 102 97 92 109
50 111 109 104 104 103 100 96 92 108
40 114 113 106 102 102 99 95 91 107