Double-Width Centrifugal Fan Performance Supplement - Greenheck

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0
1
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a
P
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40
35
30
25
20
15
10
5
0
Class Max RPM
I 1108
II 1444
III 1819
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18
16
14
12
10
8
6
4
2
75 100 125
5
3 650
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
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
350 100 83 84 83 80 76 71 65 60 82
80 84 85 83 79 76 71 65 60 81
60 84 85 82 79 76 71 65 60 81
50 85 85 83 80 76 71 65 60 82
40 88 87 84 80 76 71 65 60 82
500 100 87 87 84 82 79 74 65 60 84
80 85 85 83 82 79 74 65 58 84
60 83 84 82 81 79 74 65 59 83
50 82 84 82 81 79 74 65 59 83
40 83 84 82 81 79 74 65 60 83
700 100 98 99 92 86 84 79 72 68 90
80 97 97 89 85 83 78 71 66 89
60 93 94 87 84 83 78 71 67 88
50 93 94 87 84 83 78 72 68 88
40 92 94 87 84 84 79 72 68 88
900 100 96 103 97 91 90 84 79 76 95
80 91 102 94 87 87 81 77 73 92
60 89 98 90 84 87 81 78 75 91
50 89 96 89 84 87 81 79 75 90
40 89 99 89 83 87 81 79 76 91
1300 100 102 112 110 101 99 95 90 86 106
80 98 110 108 97 95 90 86 84 103
60 96 108 105 94 92 88 86 84 100
50 96 106 103 93 91 88 87 85 99
40 97 105 102 92 91 89 87 86 98
1819 100 107 115 124 112 106 104 99 95 117
80 104 112 122 109 102 100 95 92 115
60 102 109 119 105 99 98 94 93 112
50 102 109 117 104 98 98 94 94 110
40 103 109 115 103 98 98 95 94 109
60
50
40
30
20
15
25
10
7½
450
800
950
150
1108
Volume (cfm x 10,000)
0 2 4 6 8 10 12 14 16
3
Volume (m /hr x 10,000)
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.
65
1300
50% WOV 60% WOV
200
Sound Power [dB Ref 10 -12 watts]
1444
1550
1700
1819
70% WOV
RPM
BHP
% WOV
Density 0.075 lb/ft 3
Density 1.2 kg/m 3
80% WOV
90% WOV
36 AFDW
% WOV = (CFM X 100) / (RPM X 52.0)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 350 100 83 81 79 75 71 63 54 47 77
80 82 81 78 75 71 63 55 46 77
60 81 80 78 75 71 63 55 46 76
50 81 79 77 75 71 63 55 47 76
40 80 79 77 74 71 63 55 47 76
500 100 95 90 82 79 76 70 62 56 82
80 94 89 81 78 75 70 61 54 81
60 92 86 79 77 75 69 61 54 80
50 91 85 78 77 75 69 61 54 79
40 92 86 78 76 74 69 61 54 79
700 100 107 104 91 86 83 78 72 66 92
80 103 101 89 84 81 76 70 63 89
60 99 98 85 82 79 75 69 63 87
50 97 97 85 82 79 75 69 64 86
40 97 97 85 82 79 75 69 64 86
900 100 103 106 97 93 90 84 78 73 96
80 97 102 92 88 86 80 75 71 92
60 96 100 89 85 84 77 74 71 90
50 95 100 88 84 84 77 74 71 89
40 95 101 87 83 84 77 74 71 90
1300 100 109 112 109 103 100 95 90 84 106
80 105 111 108 101 97 91 86 82 104
60 102 109 104 96 92 87 84 81 100
50 102 109 104 95 91 87 84 82 100
40 101 107 102 94 91 87 85 82 99
1819 100 114 118 121 112 109 105 100 94 116
80 110 115 121 110 106 101 96 91 115
60 108 112 119 105 101 97 93 90 112
50 107 112 119 104 100 96 92 91 112
40 107 111 117 103 100 96 92 91 110
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