Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
35
30
25
20
15
10
5
0
Class Max RPM
I 853
II 1113
III 1402
Static Pressure (in. wg)
16
14
12
10
8
6
4
2
BIDW-44
75
60
50
40
30
25
20
15
10
7½
100 125 150
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
350
500
600
750
0
0 2 4 6 8 10 12 14
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
250 100 85 83 80 76 72 66 61 55 78
80 84 82 80 76 72 66 61 55 78
60 83 82 79 75 72 66 61 55 77
50 83 81 79 75 72 66 61 54 77
40 84 81 79 75 72 66 61 56 77
350 100 90 86 84 80 77 71 63 58 82
80 88 83 82 79 76 69 61 56 81
60 84 82 82 78 75 69 61 56 80
50 83 81 81 78 76 69 63 57 80
40 84 81 81 78 76 69 63 58 80
500 100 102 96 91 86 85 79 73 68 90
80 99 92 88 84 83 75 69 65 87
60 97 89 86 83 82 74 69 67 86
50 96 88 85 83 82 74 70 67 86
40 96 88 86 83 83 75 70 68 86
700 100 103 107 100 95 94 89 84 79 99
80 100 104 96 92 89 84 80 76 95
60 98 101 92 88 86 81 78 76 92
50 97 99 91 87 85 81 79 76 91
40 97 98 91 87 85 81 79 76 91
1000 100 110 115 110 105 104 101 97 93 109
80 106 113 106 101 99 94 91 87 105
60 103 109 101 97 94 89 87 86 101
50 103 108 102 97 94 90 88 86 100
40 107 108 101 96 94 90 88 87 100
1402 100 116 121 121 114 112 110 106 102 118
80 112 118 119 111 107 104 100 96 114
60 108 114 114 106 103 99 96 94 110
50 109 114 114 106 103 99 96 94 110
40 113 115 114 105 102 99 96 95 110
200
Volume (cfm x 10,000)
0 2 4 6 8 10 12 14 16 18 20 22
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.
853
50% WOV
60% WOV
250
300
1000
Sound Power [dB Ref 10 -12 watts]
1113
1200
1300
1402
70% WOV
80% WOV
90% WOV
39 ®
44 BIDW
% WOV = (CFM X 100) / (RPM X 97.1)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 250 100 85 80 75 72 69 60 51 43 74
80 84 79 74 71 68 60 51 42 73
60 80 77 73 69 67 58 49 41 71
50 81 77 73 69 67 58 49 41 72
40 79 77 72 69 67 58 49 41 71
350 100 99 88 81 78 75 68 60 54 81
80 94 85 78 76 73 66 58 52 78
60 94 84 76 74 70 64 56 51 77
50 92 83 76 73 70 64 56 52 76
40 91 82 76 73 71 65 57 52 76
500 100 109 99 90 87 83 78 72 65 91
80 106 96 87 84 80 75 69 63 88
60 102 92 83 80 77 72 66 62 84
50 101 90 82 79 76 71 66 63 83
40 102 91 82 79 76 71 67 63 83
700 100 107 108 99 97 94 89 83 77 99
80 105 105 96 94 89 84 78 72 96
60 102 102 91 89 85 80 76 72 92
50 101 100 90 88 84 79 76 72 91
40 101 100 90 88 83 79 76 73 91
1000 100 112 116 109 107 105 102 97 91 110
80 109 113 104 103 100 96 92 85 106
60 106 109 100 99 95 90 86 82 101
50 106 108 99 98 94 89 87 82 100
40 107 107 99 97 93 89 87 82 99
1402 100 118 121 121 115 113 111 107 102 119
80 115 119 117 111 109 105 101 95 115
60 112 115 113 107 104 99 95 91 110
50 112 114 112 106 103 99 95 92 109
40 114 114 111 106 102 98 95 92 109