1.Air at 80oC and a pressure of approximately 1350 kPa abs flows in a 20-mm-diameter tube. What is the minimum turbulent flow rate? Express the answer in liters per second and kg/second. At this flow rate what is the average velocity? Assume flow will be turbulent when Re>2000
2.Air at 70oF and atmospheric pressure flows with a velocity of 22 ft/s through a 3-in-diameter pipe (e = 0.00015 in). Find the friction head loss in 75 ft of pipe.
3.Oil with a kinematic viscosity of 0.0035ft3/s flows through a 4-in-diameter pipe with a velocity of 15ft/s. What will be the approximate distance from the pipe entrance to the first point at which the flow is established?
4.Two kilograms of steam at 300kPa and a quality of 75% are heated in a closed container until a pressure of 600kPA is reached. Determine the final temperature of the steam and the heat input. Find the pressure at which saturated water vapor is obtained.