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 2353
II 3068
III 3865
Static Pressure (in. wg)
18
16
14
12
10
8
6
4
2
AFDW-18
20 25 30 40
10
7½
5
3
2
1½
1
¾
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
900
1300
1600
2000
2353
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 73 72 73 72 65 59 53 48 72
80 74 71 69 70 63 58 52 48 70
60 72 70 67 70 63 58 52 48 69
50 72 70 67 70 64 58 52 48 70
40 73 70 67 71 64 58 52 48 71
900 100 77 83 80 78 72 66 58 54 79
80 75 80 77 76 69 65 56 53 76
60 74 75 73 75 69 65 57 53 75
50 77 77 73 75 69 65 58 54 75
40 79 78 73 75 70 65 58 54 76
1300 100 82 86 87 87 81 77 69 65 87
80 79 83 84 85 78 74 68 63 85
60 80 83 83 84 78 74 69 65 84
50 83 85 83 84 78 74 69 65 84
40 87 88 84 84 78 74 69 65 85
1900 100 89 90 95 93 88 83 78 74 94
80 86 87 91 89 85 79 73 70 90
60 88 86 88 87 83 78 75 73 88
50 90 91 89 87 83 78 76 74 89
40 93 97 92 88 83 79 76 74 90
2700 100 96 98 99 103 97 93 88 85 103
80 96 95 96 102 95 89 83 80 101
60 92 93 93 96 91 88 85 83 97
50 94 95 94 95 91 88 86 84 97
40 101 103 100 99 92 89 86 84 99
3865 100 102 107 107 109 109 103 98 94 112
80 102 106 104 107 107 99 94 89 110
60 98 103 102 103 102 97 94 92 106
50 100 105 104 102 102 97 95 93 106
40 107 112 111 106 104 98 95 93 109
15
Volume (cfm x 1000)
0 5 10 15 20 25 30 35 40
3
Volume (m /hr x 1000)
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.
51
2700
50% WOV
3068
3300
3600
60% WOV
Sound Power [dB Ref 10 -12 watts]
50
3865
70% WOV
RPM
BHP
% WOV
Density 0.075 lb/ft 3
Density 1.2 kg/m 3
80% WOV
90% WOV
18 AFDW
% WOV = (CFM X 100) / (RPM X 5.90)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 600 100 91 79 73 64 61 53 44 43 71
80 92 79 70 60 57 52 44 43 70
60 83 74 67 59 58 52 45 44 65
50 86 76 67 59 58 52 45 44 66
40 89 77 69 60 58 53 46 44 68
900 100 90 86 79 75 71 64 55 52 78
80 84 84 77 69 65 60 51 50 74
60 83 79 73 67 64 60 54 51 71
50 91 81 73 66 64 60 54 52 72
40 94 84 74 67 65 60 55 52 74
1300 100 97 90 88 84 81 74 66 60 86
80 92 87 85 80 75 68 61 57 82
60 90 85 82 76 71 66 62 60 79
50 99 94 84 77 72 67 63 60 82
40 102 95 85 77 73 68 64 61 84
1900 100 105 96 94 92 89 84 78 72 94
80 98 92 92 87 85 79 72 67 90
60 97 89 90 84 82 76 72 70 87
50 102 95 89 84 81 76 73 71 88
40 107 103 93 86 83 78 73 71 92
2700 100 112 104 99 102 99 94 89 84 103
80 105 99 97 102 97 90 83 78 102
60 104 97 94 97 93 87 83 79 98
50 106 100 95 96 92 86 84 80 97
40 114 109 102 95 93 88 84 81 100
3865 100 118 117 109 108 109 104 99 94 112
80 112 111 105 107 108 101 94 88 111
60 110 109 103 103 103 98 92 89 107
50 112 112 105 102 102 97 92 90 106
40 121 120 113 105 102 98 94 90 110
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