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- The ethanol solution is pumped into a vessel 25 m above the reference point through a 25 mm diameter steel pipe at a rate of 8 m3 / hr. The pipe length is 40 m and there are 2 elbows. Calculate the power requirements of the pump. The properties of the solution are density 975 kg / m3 and viscosity 4x 10-4 Pa s. a. Reynold number = Answer. b. Loss of Energy along the straight pipe = Answer J / kg. c. Energy Loss at curves = Answer J / kg. d. Total energy to overcome friction = Answer J / kg. e. Energy to increase water according to height = Answer J / kg. f. The theoretical energy requirement for the pump is kg ethanol / second = Answer J / kg. g. Actual pump power requirement = Answer watt.The ethanol solution is pumped into a vessel 25 m above the reference point through a 25 mm diameter steel pipe at a rate of 8 m3/hour. The length of the pipe is 35m and there are 2 elbows. Calculate the pump power requirement. The properties of the solution are density 975 kg/m3 and viscosity 4x 10-4 Pa s. a. Reynolds number = b. Energy Loss along a straight pipe = J/kg. c. Energy Loss in turns = J/kg. d. Total energy to overcome friction = J/kg. e. Energy to raise water to height = J/kg. f. Theoretical energy requirement of the pump kg ethanol/second = J/kg. g. Actual pump power requirement = watt.The ethanol solution is pumped into a vessel 25 m above the reference point through a 25 mm diameter steel pipe at a rate of 10 m3 / hr. The pipe length is 35m and there are 2 elbows. Calculate the power requirements of the pump. The properties of the solution are density 975 kg / m3 and viscosity 4x 10-4 Pa s. a. Reynold number = Answer b. Loss of Energy along the straight pipe = Answer J / kg. c. Losing Energy at curves = Answer J / kg. d. Total energy to overcome friction = Answer J / kg. e. Energy to increase water according to height = Answer J / kg. f. The theoretical energy requirement of the pump ethanol / second = Answer J / kg. g. Actual pump power requirement = Answer watt.
- Oil flows at 55.9L/s in a pipe of 160mm diameter and 50m length. SG of oil is 0.9 and viscosity is 0.04 Pa-sec. If head loss is 5.22m, determine: a. Mean Velocity of flow (m/s) b. Type of flow c. Friction Factor d. Velocity at the centerline of pipe (m/s) e. The shear stress at the wall of the pipe (Pa)4. Oil with viscosity 2 x 10-2 Ns/m² and density 850 kg/m3 is pumped along a straight horizontal pipe with a flow rate of 5 dm3/s. The static pressure difference between two tapping points 10 m apart is 80 N/m². Assuming laminar flow determine the following. i. The pipe diameter. ii. The Reynolds number. Comment on the validity of the assumption that the flow is laminarA pipe is often used to assess the flow rate of water in the center of a pipe with an internal diameter of 102.3 mm at 20°C (density = 998.3 kg/m3, viscosity = 1.005 CP). The pitot tube coefficient is 0.98, and the manometer reading is 10 mm of mercury at 20°C (density = 13,545. 85 kg/m3). Compute the velocity at the center and the water's volumetric flow rate
- Water of density 62.3 lbm/ft³ and dynamic viscosity 2.02 x 10-5 lbf-s/ft² flows with velocity 4 ft/s through a pipe of diameter 8 in. Calculate the Reynolds number ( Re = pvD/μ) using (1) English Engineering (FPS) System of Units (2) SI SystemH.W. Petroleum oil (sp. gr. = 0.9 and viscosity = 13 CP) flows isothermally through a horizontal 5 cm pipe. A Pitot tube is inserted at the centre of a pipe and its leads are filled with the same oil and attached to a U-tube containing water. The reading on the manometer is 10 cm. Calculate the volumetric flow of oil in m/s. The co-efficient of Pitot tube isThe ethanol solution is pumped into a vessel 25 m above the reference point through a 25 mm diameter steel pipe at a rate of 8 m3 / hr. The pipe length is 35m and there are 2 elbows. Calculate the power requirements of the pump. The properties of the solution are density 975 kg / m3 and viscosity 4x 10-4 Pa s. a. Reynold number = ..... b. Energy Loss along the straight pipe = ..... J / kg. c. Energy Loss at curves = ..... J / kg. d. Total energy to overcome friction = ..... J / kg. e. Energy to raise water according to height = ..... J / kg. f. The theoretical energy requirement for the pump is kg ethanol / second = ..... J / kg. g. Actual pump power requirement = ..... watts.
- 2. The radial clearance between a plunger and the walls of a drum is 0.075 mm, the length of the plunger is 250 mm and its diameter 100 mm. There is a difference in pressure of the water on the two ends of the plunger of 207.5 kN/m² and the viscosity of the water is 1.31 x 10-3 kg/m-s. Assume the flow to occur between parallel flat plates and approximate the rate of leakage in litres/s. Answer 7.0 x 10-3 litres/sA lubricating oil of viscosity 1 poise and specific gravity 0.9 is pumped through a 30 mm diameter pipe. If the pressure drop per meter length of pipe is 20 kn/m2. determine: 1. The mars flow rate in kg/min, 2. The shear stress of the pipe wall 3.The Reynolds number of flow, and 4. The power required per 50 m length of the pipe to maintain the flowA Pitot probe is mounted in a 25 mm inner diameter pipe at a location where the local velocity is approximately equal to the average velocity. The oil in the pipe has a density of 860 kg/m^3 and viscosity of 0.0103 kg/m-s. The pressure difference is measured to be 95.8 Pa. Calculate the discharge through the pipe in m^3/s. answers: a.9.27 x 10^-4 b.18. 27 10^-4 c.12. 27 x 10^-4 d.15. 27 x 10^-4