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A centrifugal pump test yields the following data: Pump Head Flow (m)(L/min) 30 25 20 40 The pump...
A centrifugal pump operating under steady flow conditions delivers 2,270 kg/min of water from an initial...
A centrifugal pump operating under steady flow conditions delivers 2,270 kg/min of water from an initial pressure of 82,740 Pa to a final pressure of 275,800 Pa. The diameter of the inlet pipe to the pump is 15.24 cm and the diameter of the discharge pipe is 10.16 cm. What is the work?
Problem 3: The following data were obtained for flow of 20°C water at 20 m/hr through a badly corroded 5-cm-diameter pipe which slopes downward at an angle of 8°: pı -420 kPa, zi -12 m, p2- 250 kPa,...
Problem 3: The following data were obtained for flow of 20°C water at 20 m/hr through a badly corroded 5-cm-diameter pipe which slopes downward at an angle of 8°: pı -420 kPa, zi -12 m, p2- 250 kPa, z2- 3 m. Estimate (a) the roughness ratio of the pipe; and (b) the percent change in head loss if the pipe were smooth and the flow rate the same. For water at 20°C, take ρ-998 kg/m3 and μ-0.001 kg/m s
Problem...
Problem 4 (50 points) water is discharged from a reservoir at a rate of 18.103 m2/s using two horizontal cast iron pipes nected in series and a pump between them. The first pipe is 20 m long and...
Problem 4 (50 points) water is discharged from a reservoir at a rate of 18.103 m2/s using two horizontal cast iron pipes nected in series and a pump between them. The first pipe is 20 m long and has a 6-cm diameter, while the second pipe is 35 m long and has a 4-cm diameter. The water level in the reservoir is 30 m above the centerline of the pipe. The pipe entrance is sharp-edged. Losses associated with the connection...
30 points You need to pump water at 20 °c from an open reservoir at flow...
30 points You need to pump water at 20 °c from an open reservoir at flow rate of 14 x 10-3 m?s through a pipe with an inside diameter of 0.03 m, using a centrifugal pump having an (NPSH)req = 2.5 m and the equivalent length on the suction side is 3 m. There are several minor losses: four standard 900 flanged elbows, and fully open flanged globe valve, fully open flanged gate valve, and the entrance. What is the...
A centrifugal pump is used to pump water at 77ºF from a reservoir whose surface is 20 ft above th...
A centrifugal pump is used to pump water at 77ºF from a reservoir whose surface is 20 ft above the centerline of the pump inlet. The Pipe System consists of 67.5 ft of PVC pipe with a 1.2 in ID and negligible average internal roughness height. The length of the pipe from the bottom of the lower tank to the pump inlet is 12 ft. There are several minor losses in the pipe: an acute edge entry (KL = 0.5),...
A pump that is 80% efficient pumps water from the lower tank to the upper tank...
A pump that is 80% efficient pumps water from the lower tank to the upper tank at a flow rate of 0.01 m/s through 70 meters of 10-cm diameter pipe. In this system there are two regular, screwed 90 degree elbows and a fully open screwed angle valve. Assume the reservoir exits and entrances are sharp. The friction factor,f, of the pipe is 0.02. What horsepower pump is needed to achieve this flow rate? Use: Pwater = 998 kg/m2; Mwater...
2. The characteristics of a 0.7 m diameter centrifugal pump impeller running at 750 rpm are as fo...
2. The characteristics of a 0.7 m diameter centrifugal pump impeller running at 750 rpm are as follows: 2 (m*/min) H (m) 4(%) 0 7 4 2 28 354 49 56 40 40.6 40.4 39.3 38.0 33.6 25.6 145 0 0 460 74 83 83 51 0 (a) f the pump is initially used to transfer water from one reservoir to another at the same level, determine the pump operating point if the head lost to frictional and other resistances...
You need to pump water at 20 C from an open reservoir at flow rate of...
You need to pump water at 20 C from an open reservoir at flow rate of 1.4 x 10^-3 m3/s through a pipe with an inside diameter of 0.03m, using a centrifugal pump having an (NPSH)aq =2.5 m and the equivalent length on the suction side is 3m. There are several minor losses: four standar 90 flanged elbows, and fully open flanged globe valve, fully open flanged gate valve, and the Entrance. What is the the maximum distance above the...
1 Award: 10.00 points used to pump water from one large reservoir to another large reservoir that is at a higher elevat...
1 Award: 10.00 points used to pump water from one large reservoir to another large reservoir that is at a higher elevation. The free surfaces of both reservoirs A water pump as sketched. The dimensions are provided in the fiqure, but all minor losses are neglected. The elevation difference is 10.85 m. The pump's performance is approximated by the expression exposed to atmospheric pressure Havailable = Ho- aV2 water column, coefficient a 0.0678 m/Lpm2, the available pump head Havailable is...
Q2. 50 marks Water at 20°C is pumped at 5.7 m3 min-1 from the lower to...
Q2. 50 marks Water at 20°C is pumped at 5.7 m3 min-1 from the lower to the upper reservoir, as in Fig. 2. The free surface of the upper reservoir is at height Z2 = 46 m, and of the lower reservoir at 21 = 15 m. The pipe diameter before and after the pump is D= 15 cm. Pipe friction losses are approximated by h = 27v2/(29), where V is the average velocity in the pipe. The gravitational acceleration...
Problem 3: The following data were obtained for flow of 20°C water at 20 m/hr through a badly corroded 5-cm-diameter pipe which slopes downward at an angle of 8°: pı -420 kPa, zi -12 m, p2- 250 kPa, z2- 3 m. Estimate (a) the roughness ratio of the pipe; and (b) the percent change in head loss if the pipe were smooth and the flow rate the same. For water at 20°C, take ρ-998 kg/m3 and μ-0.001 kg/m s
Problem...
Problem 4 (50 points) water is discharged from a reservoir at a rate of 18.103 m2/s using two horizontal cast iron pipes nected in series and a pump between them. The first pipe is 20 m long and has a 6-cm diameter, while the second pipe is 35 m long and has a 4-cm diameter. The water level in the reservoir is 30 m above the centerline of the pipe. The pipe entrance is sharp-edged. Losses associated with the connection...
30 points You need to pump water at 20 °c from an open reservoir at flow rate of 14 x 10-3 m?s through a pipe with an inside diameter of 0.03 m, using a centrifugal pump having an (NPSH)req = 2.5 m and the equivalent length on the suction side is 3 m. There are several minor losses: four standard 900 flanged elbows, and fully open flanged globe valve, fully open flanged gate valve, and the entrance. What is the...
A pump that is 80% efficient pumps water from the lower tank to the upper tank at a flow rate of 0.01 m/s through 70 meters of 10-cm diameter pipe. In this system there are two regular, screwed 90 degree elbows and a fully open screwed angle valve. Assume the reservoir exits and entrances are sharp. The friction factor,f, of the pipe is 0.02. What horsepower pump is needed to achieve this flow rate? Use: Pwater = 998 kg/m2; Mwater...
2. The characteristics of a 0.7 m diameter centrifugal pump impeller running at 750 rpm are as follows: 2 (m*/min) H (m) 4(%) 0 7 4 2 28 354 49 56 40 40.6 40.4 39.3 38.0 33.6 25.6 145 0 0 460 74 83 83 51 0 (a) f the pump is initially used to transfer water from one reservoir to another at the same level, determine the pump operating point if the head lost to frictional and other resistances...
1 Award: 10.00 points used to pump water from one large reservoir to another large reservoir that is at a higher elevation. The free surfaces of both reservoirs A water pump as sketched. The dimensions are provided in the fiqure, but all minor losses are neglected. The elevation difference is 10.85 m. The pump's performance is approximated by the expression exposed to atmospheric pressure Havailable = Ho- aV2 water column, coefficient a 0.0678 m/Lpm2, the available pump head Havailable is...
Q2. 50 marks Water at 20°C is pumped at 5.7 m3 min-1 from the lower to the upper reservoir, as in Fig. 2. The free surface of the upper reservoir is at height Z2 = 46 m, and of the lower reservoir at 21 = 15 m. The pipe diameter before and after the pump is D= 15 cm. Pipe friction losses are approximated by h = 27v2/(29), where V is the average velocity in the pipe. The gravitational acceleration...
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