Pressure (psi x 103) 
ra 2.5 cfm, n = 18% 
A Motor input 
B Motor exhaust 
Yk 5 cfm, n = 12% 
1 inch ID 
100 hp 
20,000-foot depth 
n= 6% 
Pressure (psi x 103) 
rS 
| 
; , | ! | 
0 10 20 10 0 
Surface Bottom Surface 
Length of Hose 
(feet x 103) 
Figure 23. Pressure gradient for three one-pipe pneumatic systems. 
Ae Lae A Motor input 
cim, 7 “70 B Motor exhaust 
A 
10 2.5 cfm, n = 38% 1 inch ID 
100 hp 
5 cfm, n = 18% 20,000-foot depth 
10} 
(6) 10 20 10 0 
Surface 
Bottom Surface 
Length of Hose 
(feet x 103) 
Figure 24. Pressure gradient for three two-pipe pneumatic systems. 
23 
