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Q Engine Exhaust Flow
m3/min.
cfm
453.1
16000
339.8
12000
283.2
10000
254.9
9000
226.6
8000
198.2
7000
169.9
6000
141.6
5000
113.3
4000
85.0
3000
56.6
2000
42.5
1500
28.3
1000
25.5
900
22.7
800
3
(cfm x 0.02832 = m
/min.)
Figure 7-11 Back Pressure using Pipe Size 5 in., 127 mm or Larger
60 Appendix
Δ P Back Pressure
kPa per m
in. Hg per foot
1.033
1.0
0.515
0.5
0.104
0.1
0.052
0.05
0.009
0.01
0.005
0.005
0.001
0.001
0.001
0.0005
0.000
0.0001
0.000
0.00005
0.000
0.00001
(in. Hg x 3.387 = kPa)
d Pipe Diameter
mm
inches
76.2
3
101.6
4
127.0
5
6
152.4
177.8
7
203.2
8
228.6
9
254.0
10
304.8
12
330.2
13
355.6
14
406.4
16
(in. x 25.4 = mm)
TP-6609 6/08
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