Compute the critical velocity (lower) for a 100-mm pipe carrying water at 27°C. Compute the critical velocity (lower) for a 4" pipe carrying heavy fuel oil at 110°F. Ans. 2.88 ft/sec 8.45. Water flows...

Compute the critical velocity (lower) for a 100-mm pipe carrying water at 27°C. Compute the critical velocity (lower) for a 4" pipe carrying heavy fuel oil at 110°F. Ans. 2.88 ft/sec 8.45. Water flows at 20°C through a new cast iron pipe at a velocity of 4.2 m/s. The pipe is 400 m long and has a diameter of 150 mm. Determine the head loss due to friction.