Question

Question 4. Methane enters a 4.2 cm ID pipe at 45°C and 12 bar with an average velocity of 7
m/s and emerges at a point lower than the inlet at constant temperature and 9 bar,
i. Calculate the change in Kinetic energy rate, assuming that the methane behaves ideal gas.

ii. If the heat loss is estimated to be 45 W, calculate the change in height between the inlet
ad outlet, assuming the change of internal energy is negligible
g=9.81 m/s2

Answer 1