MET230: Hydraulics and Pneumatics

MET230: Hydraulics and Pneumatics
Unit 3 Review Assignment
Name of student

Question 1
Which of the following is NOT true about components of a pneumatic system such as valves,
pipes, and compressors?
a. Undersized components such as pipes and valves reduce pressure losses due to friction
b. Oversized components such as pipes and valves result in excessive initial installation
costs
c. Air pressure loses in pipes make the compressor operate at higher output pressure which
requires greater input power.
d. Air leaks in piped force the compressor to provide a greater flow rate than required
e. All of the above
Question 2
Which of the following is NOT one of multiple applications of pneumatic vacuum systems?
a. Materials handling
b. Sealing
c. Vacuum forming
d. Clamping
e. None of the above
Problem 1
A compressor delivers 130 scfm of air through a 1-in schedule 40 pipe at a receiver pressure of
105 psig. Find the pressure loss for a 170-ft length of pipe
Hint: Use the table shown if needed.

Tabulated values of d and d5.31 for schedule 40 common pipe
SOLUTION

(Wang et al., 2016)
Problem 2
A compressor delivers 200 cfm of air through a pipe at a receiver pressure of 140 psig. What
minimum size schedule 40 pipe should be used if the pressure loss is to be limited to 0.10 psi
per foot of pipe length?
Hint: use the table of Problem 1 if needed.
Solution