Medium fuel oil at
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Applied Fluid Mechanics (7th Edition)
- A pumping system has the following characteristics, f=0.015 length of thepipe = (2500 ft) pipe diameter 6 in, losses less than 0.5, the pipeis cast iron, and the system curve is:Hp= 34+ 5.47Q2Knowing that the system curve and the pump curve intersect at 12 cfsa. Determine Operation headb. Determine dischargec. Plot the system curvearrow_forwardQ/ Discuss the relation between the head pressure and flow rate for the benefits of connecting the pumps in series?arrow_forwardWater at 15°C is transported from a large open tank to the bottom of another open tank above. The surfaces of the two tanks are kept at 160 ft apart vertically. The pipes used have an ID of 3.5 inches, and a total length of the pipe used is 150 ft. In the system, there are two fully open gate valves, 6 90° elbows, and 2 standard tees. The pump used has a mechanical efficiency of 60%, and the volumetric flow rate of water is at 35 (ft^3)/s. Frictional losses due to sudden contraction and expansion are negligible. Determine the Reynolds number of the flowarrow_forward
- Please include a diagram.A pump supplies water at a flow rate of 4ft3/s from an open reservoir through a horizontal 8-in sched 40 pipe. The head loss from the reservoir to the suction of the pump is 2 ft-lbf/lbm, and the discharge is at 90 psig into a 6-in sched 80 pipe. The pump has an efficiency of 65% answer the following:a.) The head that must be delivered by the pump to the water is ________ or energy developed by the pump or output energy of the pumpb.) input energy to the pumpc.) Rated power of the pump in kWarrow_forwardPROBLEM 02: Water entering a pump through an 200mm diameter pipe at 27.6 kPa has a flow rate of 0.1 m^3/s. It leaves the pump through a 100mm diameter pipe at 103.4 kPa. Assuming that the suction and discharge sides of the pump are at the same elevation, find the horsepower delivered to the water by the pump (746 watts = 1 HP). Illustrate the problem and show your complete solution.arrow_forwardA header with 170 psia saturated steam is feeding a pulp stock digester through 10.8 feet of 3-inch Schedule 40 pipe which includes three standard 90 degree elbows and a fully-open standard globe valve. The initial pressure in the digester is 20 psia. a) Determine the initial flow rate in pounds per second. The specific volume of saturated steam at 170 psia is 2.674 ft3/lbm. (Please use compressable flow equations to get the correct units of Pounds per seconds.) G= Y*(2*density*deltaP/K(fittings))^1/2 b) At what digester pressure would the flow transition from sonic to subsonic?arrow_forward
- Water reservoir A (El. 13.5m) to reservoir B (El. 51.3) is lifted at the rate of 30000L/min. The intake pipe is 250mm. The discharge pipe is 200mm . Assuming the pipes are made of wrought iron, and the pump to be used runs at 1800 rpm, determine: a. the pump to be used; b. the number of stages to be used for the pump to operate at maximum efficiency.arrow_forwardIn a cast-iron piping system of 450 ft length shown below, the rate of flow is 1 cfs at 70°F. Assuming the total head losses for the flow in the system is 10 ft, what is the energy head supplied by the pump E? a. 40 ft b. 50 ft c. 60 ft d. 510 ft e. None of the abovearrow_forwardThe water is pumped from a 40 sch pipe that has 750 ft lenght, 6 in. nominal diameters. Height difference between exit and entry planes is stated as 50 ft. The yield of waterpump, 80% the power of pump motor is 20 horsepowers. Friction losses are stated as 50ft-lbf/lbm. Please calculate the flow rate in pipe line.arrow_forward
- A steady stream of n-butanol is needed to be fed into the reactor at 40 ̊C. However, the inlet of the reactor is located 7.5 m above the reservoir tank. As such, a highly effective centrifugal pump (70% efficiency) is used for such a purpose. It was understood that the needed volumetric flow rate into the reactor is fixed at 20 m3/h. It was also noted that the n-butanol reservoir is closed but not pressurized, while the gauge pressure at the endof the discharge line is measured at 275 kPa. Given that the density of n-butanol is 810kg/m3. If the discharge pipeline was 5 cm in diameter, calculate: (i) The velocity of n-butanol at the discharge line. (ii) The total power input from the centrifugal pump. (iii) The power delivered to the n-butanol fluid.arrow_forwardThe system shown below uses a pump to transfer heavy fuel oil (T= 25°C) from the lower tank to the upper tank at the rate of 3600 L/min. All pipe is DN 100 Schedule 40 steel (total system length of 310 m) and the pressure line has two 90° long radius elbows and two 45º standard elbows. Valves are: fully open gate valve(s); 2 swing-type check valve, fully open butterfly valve. Determine: a. The head loss in meters due to pipe friction. b. The head loss in meters due to minor losses c. The required pump power in kW. d. The pressure at the pump inlet (suction line is 10 m long). Is this pressure a vacuum? e. The pressure at the pump outlet.arrow_forwardA pump station has been designed to lift water out of a 6 metre deep pit (vented to atmosphere) via a centrifugal pump mounted at ground level. Liquid conditions 20°C Suction pipe work losses 2.0 metres NPSH safety factor 5.0 kPa Vapor pressure @ 20oC 0.25 metres a) Calculate the Net Positive Suction Head (NPSH) for the system. b) In summer the liquid temperature rises to 60 oC, this changes the water vapor pressure to 2.05 metres. What is the revised NPSH for the higher water temperature? For the NPSH result from part (b) what increase in suction pipe work size is required to have a positive NPSH result as calculated in part (a).arrow_forward
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