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A pump is located 20 feet below a supply reservoir. The head loss in the pipe...
11. Water is pumped from a reservoir at a lower elevation to an elevated reservoir by...
11. Water is pumped from a reservoir at a lower elevation to an elevated reservoir by using a suitable pump. The lower reservoir water level have an atmospheric pressure head of I and is at an elevation of 20 ft. while the intake/suction side of the pump is at an elevation of 25 ft. The water is pumped at a rate of 425 gpm in a 6" diameter pipe, friction factor () is 0.017 and the length of pipe is...
A centrifugal pump is placed above a reservoir as shown below. If the NPSHR is 17...
A centrifugal pump is placed above a reservoir as shown below. If the NPSHR is 17 ft and the flow rate is 32 ft3/s, determine the maximum height, 21, that the pump can be located above the reservoir surface without cavitation. Assume that the total head loss between the tank and pump inlet is 10 ft. The diameter of the pipe on the suction side of the pump is 12 inches. The reservoir surface is at atmospheric pressure, Patm =...
The value of (NPSHfor a pump is given by the manufacturer as 20 ft. Water is...
The value of (NPSHfor a pump is given by the manufacturer as 20 ft. Water is being pumped from a reservoir at a rate of 25 cfs. The water level in the reservoir is 6.0ft below the pump. Atmospheric pressure is 14.7 psia and water temperature is 40℉. If the total head loss in the suction pipe is 4.0 ft, is the pump safe from cavitation effects?
1- Calculate the net positive suction head (NPSH) of the pump using the following data. i) - Vapo...
1- Calculate the net positive suction head (NPSH) of the pump using the following data. i) - Vapor pressure of liquid -2.685 x 104 Pa i) - Distance between the level of liquid in the reservoir and suction line 1.2 m. The pump is above the liquid level. ii) -The density of liquid 865 kg/m3 iv)- Friction in the suction line 3.5 J/kg v) - Reservoir is open to atmosphere 2- Liquid octane shall be drawn from an open suction...
02. centrifugal pump draws benzene at 25°C (sp. weight of benzene 8.59 kN/m) om a tank whose level is 2.6 m below the pump inlet. The atmospheric pressure (abs). The head loss in the suction pipi...
02. centrifugal pump draws benzene at 25°C (sp. weight of benzene 8.59 kN/m) om a tank whose level is 2.6 m below the pump inlet. The atmospheric pressure (abs). The head loss in the suction piping due to friction and minor osses is 0.8 N.m /N. The vapor pressure of benzene is 13.3 kPa (abs). Determine he available net positive suction head (NPSH) and tell f it is acceptable or not. (10 points) Discharge ine Flew 2.6 m What is...
7.14 The pump in Fig. 7.20 delivers water from the lower to the upper reservoir at the rate of 0.057 m3/s. The energy loss between the suction pipe inlet and the pump is 1.83 m and that between t...
7.14 The pump in Fig. 7.20 delivers water from the lower to the upper reservoir at the rate of 0.057 m3/s. The energy loss between the suction pipe inlet and the pump is 1.83 m and that between the pump outlet and the upper reservoir is 3.66 m. Both pipes are 6-in Schedule 40 steel pipe. Calculate (a) the pressure at the pump inlet, (b) the pressure at the pump outlet, (c) the total head on the pump, and (d)...
A pump move warm water at 120F from a reservoir open to atmosphere. The pipe is...
A pump move warm water at 120F from a reservoir open to atmosphere. The pipe is 6" diameter cast and has a standard 90 degree elbow and a fully open gate valve. The pump draws water from a pipe submerged below the water surface. The pump is 10 feet above the reservoir surface, and there are 20 feet of pipe in the inlet section. If the flow rate is 1,650 gpm, what is the NPSHA at the pump inlet?
As we learned, one must be careful, when placing a pump, to avoid cavitation, the likelihood...
As we learned, one must be careful, when placing a pump, to avoid cavitation, the likelihood of which is characterized by the Net Positive Suction Head. Using a pump to 'pull' fluid up (rather than push) can lead to cavitation if the available NPSH falls below the required NPSH (required by the pump). Well, using a pump to pull' fluid horizontally can also cause cavitation. Consider the sketch below. The pump is 2 m below the free surface of the...
Q5. A pump is located 2 m below the water surface in a reservoir as shown....
Q5. A pump is located 2 m below the water surface in a reservoir as shown. The piping between the pump and the reservoir consists of 3 m of 150-mm-diameter ductile iron pipe of 0.2 friction Coefficient. The valves and bends between the source reservoir and the pump are estimated to have a total local loss coefficient of k=50 (hikV2/2g). The water in the reservoir has a temperature of 25°C and the atmospheric pressure is 101.3 kPa. 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),...
11. Water is pumped from a reservoir at a lower elevation to an elevated reservoir by using a suitable pump. The lower reservoir water level have an atmospheric pressure head of I and is at an elevation of 20 ft. while the intake/suction side of the pump is at an elevation of 25 ft. The water is pumped at a rate of 425 gpm in a 6" diameter pipe, friction factor () is 0.017 and the length of pipe is...
A centrifugal pump is placed above a reservoir as shown below. If the NPSHR is 17 ft and the flow rate is 32 ft3/s, determine the maximum height, 21, that the pump can be located above the reservoir surface without cavitation. Assume that the total head loss between the tank and pump inlet is 10 ft. The diameter of the pipe on the suction side of the pump is 12 inches. The reservoir surface is at atmospheric pressure, Patm =...
The value of (NPSHfor a pump is given by the manufacturer as 20 ft. Water is being pumped from a reservoir at a rate of 25 cfs. The water level in the reservoir is 6.0ft below the pump. Atmospheric pressure is 14.7 psia and water temperature is 40℉. If the total head loss in the suction pipe is 4.0 ft, is the pump safe from cavitation effects?
1- Calculate the net positive suction head (NPSH) of the pump using the following data. i) - Vapor pressure of liquid -2.685 x 104 Pa i) - Distance between the level of liquid in the reservoir and suction line 1.2 m. The pump is above the liquid level. ii) -The density of liquid 865 kg/m3 iv)- Friction in the suction line 3.5 J/kg v) - Reservoir is open to atmosphere 2- Liquid octane shall be drawn from an open suction...
02. centrifugal pump draws benzene at 25°C (sp. weight of benzene 8.59 kN/m) om a tank whose level is 2.6 m below the pump inlet. The atmospheric pressure (abs). The head loss in the suction piping due to friction and minor osses is 0.8 N.m /N. The vapor pressure of benzene is 13.3 kPa (abs). Determine he available net positive suction head (NPSH) and tell f it is acceptable or not. (10 points) Discharge ine Flew 2.6 m What is...
7.14 The pump in Fig. 7.20 delivers water from the lower to the upper reservoir at the rate of 0.057 m3/s. The energy loss between the suction pipe inlet and the pump is 1.83 m and that between the pump outlet and the upper reservoir is 3.66 m. Both pipes are 6-in Schedule 40 steel pipe. Calculate (a) the pressure at the pump inlet, (b) the pressure at the pump outlet, (c) the total head on the pump, and (d)...
As we learned, one must be careful, when placing a pump, to avoid cavitation, the likelihood of which is characterized by the Net Positive Suction Head. Using a pump to 'pull' fluid up (rather than push) can lead to cavitation if the available NPSH falls below the required NPSH (required by the pump). Well, using a pump to pull' fluid horizontally can also cause cavitation. Consider the sketch below. The pump is 2 m below the free surface of the...
Q5. A pump is located 2 m below the water surface in a reservoir as shown. The piping between the pump and the reservoir consists of 3 m of 150-mm-diameter ductile iron pipe of 0.2 friction Coefficient. The valves and bends between the source reservoir and the pump are estimated to have a total local loss coefficient of k=50 (hikV2/2g). The water in the reservoir has a temperature of 25°C and the atmospheric pressure is 101.3 kPa. What is the...
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