where P 
= weight fluid flowing (|b/sec) 
Ww 
R = perfect gas constant 
T 
= temperature (OR) 
V ? 
nies ices L) (7) 
pressure at indicated point (psi) 
g = acceleration of gravity (ft/sec?) 
A = area of section (ft?) 
v = volume per unit weight (ft?/Ib) 
f’ = friction factor, f/4 
L = length of hose (ft) 
D = inside diameter of hose (ft) 
Simple heat-transfer calculations proved the assumption of isothermal flow 
in these layers to be valid since the air flows were low enough that complete 
heat transfer was accomplished. 
Ocean surface 
- 
©) 
compressor 
20,000 feet 
( < ocean floor 
Figure 21. Schematic of closed-circuit 
Pneumatic system for power 
transmission. 
21 
ocean surface 
a 
1 
20,000 feet 
= 
ocean floor 
Figure 22. Schematic of open-circuit 
pneumatic system for power 
transmission. 
