1. Oil flows in a pipe at a rate of 4000 GPM. The head loss over a length of 10,000 ft of the pipe..

1. Oil flows in a pipe at a rate of 4000 GPM. The head loss
over a length of 10,000 ft of the pipe having a surface roughness of 0.0018 in,
is 75 ft. Find the pipe diameter. Assume oil _ = 0.36 ft2 /h.

2. The number of tubes of a shell and tube heat exchanger N
is given but we do not know the tube diameter, d. To determine the tube
diameter, a pump is used to circulate flow inside the tubes. The flow rate and
the pressure drop are then carefully measured. Use the specified data and find
the tube inside diameter.

Data: N = 40, Ltube = 3 m, _P = 34.5 kPa,
V= 31.55 lit/s, T = 20 C.