An oil having a density of 833 kg/m3, and a viscosity of 3.3x10^-3 Pa-s is pumped from an open tank to a pressurized tank held at 345 kPa gage. The oil is pumped from an inlet at the side of the open tank though a line of commercial steel pipe having an inside diameter of 0.07792 m at a rate of 3,494x10^-3 m3/s. The length of straight pipe is 122 m, and the pipe contains two elbows (90°) and a globe valve half open. The level of the liquid in the open tank is 20 m above the liquid level in the pressurized tank. The pump efficiency is 75%. Calculate the kW power of the pump.

Water (specific gravity, G, is 1.0 and the kinematic viscosity, ν, is 1.14 *10-6 m2 /s) flows through a piping system with a flow rate of 0.9 m3/s. The pipe is 2800 m long and 600 mm inside diameter. The pipe has three gate valves, two globe valves, one swing check valve, three standard teesthrough-branch, and four 90o standard elbows. Calculate the following:a- The total length of that piping system.b- Is the flow laminar or turbulent?

3. A pump steadily circulates oil used for lubricating heavy machine tools. The volume flow rate and temperature of the oil are 300 gal/min and 104°F, respectively. At 104°F, the kinematic viscosity and the specific gravity of the oil are 2.15 x 10-3 ft² /s and 0.89, respectively. The pipe lengths are 25 ft for the 4-in diameter pipe and 75 ft for the 3-in diameter one. The Schedule-40 steel pipe has an average roughness element size of 0.0018 in. If all minor losses can be ignored, evaluate how much power (in a unit of horsepower) the pump delivers to the oil. 6 ft 22 ft Flow 15 ft Discharge line 3-in Schedule 40 Suction line 4-in Schedule 40 steel pipe steel pipe Pump

Water at 15°C is flowing in a 3 inch horizontal Schedule 40 steel pipe at a pressure of 102 kPa. The pipe reduces to a 1.5 inch Schedule 40 steel pipe. What is the flow rate if pressure in the 1.5 inch pipe is 99.8 kPa?