Wind Velocity (MPH)  
Temp. Difference
( Degree F )
Stack Height Feet
Capacity in Cubic Feet Per Minute
16" Turbine
18" Turbine
24'' Turbine
2
10
20
428
490
667
30
465
537
744
40
496
578
812
20
20
496
578
812
30
548
645
924
40
591
701
1001
30
20
548
646
925
30
612
729
1062
40
666
800
1181
4
10
20
683
759
990
30
720
816
1089
40
751
857
1160
20
20
751
751
1160
30
803
924
1269
40
846
980
1361
30
20
803
924
1269
30
867
1027
1456
40
921
1073
1367
6
10
20
958
1078
1405
30
995
1067
1337
40
1026
1114
1420
20
20
1026
1115
1424
30
1078
1115
1367
40
1121
1223
1589
30
20
1078
1273
1762
30
1142
1223
1565
40
1196
1306
1714
8
10
20
1251
1377
1752
30
1288
1339
1615
40
1319
1436
1826
20
20
1319
1477
1927
30
1371
1545
2040
40
1414
1600
2131
30
20
1371
1545
2040
30
1435
1625
2171
40
1489
1699
2296
10
10
20
1545
1733
2276
30
1582
1785
2364
40
1613
1825
2431
20
20
1613
1825
2431
30
1665
1894
2545
40
1708
1949
2645
30
20
1665
1894
2545
30
1729
1977
2682
40
1763
2005
2695