An engineer has designed a system in which a positive-displacement pump is used to pump water...
An engineer has designed a system in which a positive-displacement pump is used to pump water from an atmosphere tank into a pressurized tank operating at 150 psig. A control valve is installed between the pump discharge and the pressurized tank. With the pump running at a constant speed and stroke length, 350 gpm of water is pumped when the control valve is wide open and the pump discharge pressure is 200 psig.
(a) If the control valve is pinched back to 60 percent open, determine the water flow rate.
Homework Answers
Add Answer to:
An engineer has designed a system in which a
positive-displacement pump is used to pump water...
(Q1) The piping system shown here has a pump that delivers 10 hp to the fluid...
(Q1) The piping system shown here has a pump that delivers 10 hp to the fluid ant a flow rate of 55 gpm of water at 80 F. Neglecting other losses, (a) evaluate the friction losses in the 272 ft-long discharge pipe and in the 12 ft- long suction pipe. (b) Calculate the pressure (psig) on top of the discharge tank. ...(25 marks) an 7 1.5 in Schedule 80 pipe 220 2 in Schedule 80 pipe
1 A pump delivers water from the lower reservoir to the upper reservoir at a rate of 60 L/s. Both...
1 A pump delivers water from the lower reservoir to the upper reservoir at a rate of 60 L/s. Both the suction and discharge pipes are DN 150 schedule 40steel pipe. The length of the suction pipe leading to the pump is 3.5 m, and 7 m of discharge pipe extend from the pump outlet to the upper tank. There are three standard 900 elbows and a fully open gate valve. The depth of the fluid level inside the lower...
A pump is used to pump water at 60oF from a reservoir whose surface is 4.0...
A pump is used to pump water at 60oF from a reservoir whose surface is 4.0 ft above the centerline of the pump inlet. The piping system from the reservoir to the pump consists of 10.5 ft of cast iron pipe with a diameter of 4.0 in and an average roughness (ε) of 0.02 inches. There are several minor losses: a sharp edged inlet (K – 0.5), three flanged smooth 90o regular elbows (K – 0.3 each), and a fully open flanged globe...
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),...
Fluid Mechanics & Fluid Power Determine the NPSH available. The pressure in the tank is - 20 kPa at 70 °C (atmospheric pressure is 100.5 kPa). The water level in the tank is 2.5 above the pump in...
Fluid Mechanics & Fluid Power
Determine the NPSH available. The pressure in the tank is - 20 kPa at 70 °C (atmospheric pressure is 100.5 kPa). The water level in the tank is 2.5 above the pump inlet. The pipe is 1%", schedule 40 with a total length of 12 m. The elbow is standard, and the globe valve is fully open. The flow rate is 95 L/min. FIGURE 13.27 llustration of pump performance for different impeller diameters with net...
A liquid chemical is pumped from a storage tank open to the atmosphere, into a reactor...
A liquid chemical is pumped from a storage tank open to the atmosphere, into a reactor with pressure of 2.0 atm gauge above the liquid level. The liquid density is 1200 kg/m3 and viscosity is 1.45 cP. The required volumetric flow rate is 1.25 x 103 m/s. The pipeline is 100 m long in total, made of commercial steel pipe, 2 in. size and Schedule 40. The gate valve is wide open. 10 m Reactor Calculate: (a) The discharge velocity...
(100 points) Water at 25°C is pumped at a rate of 0.075m's from a reservoir 20m above a pump to a free 1....
(100 points) Water at 25°C is pumped at a rate of 0.075m's from a reservoir 20m above a pump to a free 1. discharge (this means discharged to atmosphere) 35m above the pump. The pressure on the intake side of the pump is 150kPa and the pressure on the discharge side of the pump is 450kPa. The pipe between the reservoir and the pump is 3 meters of Sin diameter cast iron. From the pump to the discharge the pipe...
mately 100 n+0.00 Water must be pumped through a pipe network that has a requaired head of approx where Q has units of gpm An engineer is considering using a centrifugal pump operating at 1 ugal p...
mately 100 n+0.00 Water must be pumped through a pipe network that has a requaired head of approx where Q has units of gpm An engineer is considering using a centrifugal pump operating at 1 ugal pump operating at 11s0 rpm with three possible impeler diameters: 6·T, and ir A) If at least 160 gpm of flow is needed, which (if any) of the impellers will meet this n 8) Estimate the pump efficiency and motor power for the 6...
The water pump, as shown in the figure below, maintains a pressure of 6.5 psig at...
The water pump, as shown in the figure below, maintains a
pressure of 6.5 psig at point 1. There is a filter, a half-open
disk valve, and two regular screwed elbows. There are 80 ft of
4-inch diameter commercial steel pipe. For water, take ρ = 1.94
slug/ft3 and μ = 2.09E−5 slug/ft⋅s. Take kvalve ≈ 2.8, kelbow ≈
0.64, kexit ≈ 1, and kvalve ≈ 0 (when the disk valve wide open). If
the flow rate is 0.55 ft3/s,...
A 38-in pump is installed for the system below. The pipe (100- cm diameter) has a...
A 38-in pump is installed for the system below. The pipe (100- cm diameter) has a friction factor of 0.012 and a total length of 20 km. Given that K = 0.5 (pipe entrance) and K. = 1.0 (pipe exit). For water at 80 degrees Fahrenheit, estimate the flow rate (in gpm), the power required (in horsepower, HP), and the net positive suction head required (in ft) to avoid cavitation for the system when the pump running. Elevation = 180...
(Q1) The piping system shown here has a pump that delivers 10 hp to the fluid ant a flow rate of 55 gpm of water at 80 F. Neglecting other losses, (a) evaluate the friction losses in the 272 ft-long discharge pipe and in the 12 ft- long suction pipe. (b) Calculate the pressure (psig) on top of the discharge tank. ...(25 marks) an 7 1.5 in Schedule 80 pipe 220 2 in Schedule 80 pipe
1 A pump delivers water from the lower reservoir to the upper reservoir at a rate of 60 L/s. Both the suction and discharge pipes are DN 150 schedule 40steel pipe. The length of the suction pipe leading to the pump is 3.5 m, and 7 m of discharge pipe extend from the pump outlet to the upper tank. There are three standard 900 elbows and a fully open gate valve. The depth of the fluid level inside the lower...
Fluid Mechanics & Fluid Power
Determine the NPSH available. The pressure in the tank is - 20 kPa at 70 °C (atmospheric pressure is 100.5 kPa). The water level in the tank is 2.5 above the pump inlet. The pipe is 1%", schedule 40 with a total length of 12 m. The elbow is standard, and the globe valve is fully open. The flow rate is 95 L/min. FIGURE 13.27 llustration of pump performance for different impeller diameters with net...
A liquid chemical is pumped from a storage tank open to the atmosphere, into a reactor with pressure of 2.0 atm gauge above the liquid level. The liquid density is 1200 kg/m3 and viscosity is 1.45 cP. The required volumetric flow rate is 1.25 x 103 m/s. The pipeline is 100 m long in total, made of commercial steel pipe, 2 in. size and Schedule 40. The gate valve is wide open. 10 m Reactor Calculate: (a) The discharge velocity...
(100 points) Water at 25°C is pumped at a rate of 0.075m's from a reservoir 20m above a pump to a free 1. discharge (this means discharged to atmosphere) 35m above the pump. The pressure on the intake side of the pump is 150kPa and the pressure on the discharge side of the pump is 450kPa. The pipe between the reservoir and the pump is 3 meters of Sin diameter cast iron. From the pump to the discharge the pipe...
mately 100 n+0.00 Water must be pumped through a pipe network that has a requaired head of approx where Q has units of gpm An engineer is considering using a centrifugal pump operating at 1 ugal pump operating at 11s0 rpm with three possible impeler diameters: 6·T, and ir A) If at least 160 gpm of flow is needed, which (if any) of the impellers will meet this n 8) Estimate the pump efficiency and motor power for the 6...
The water pump, as shown in the figure below, maintains a
pressure of 6.5 psig at point 1. There is a filter, a half-open
disk valve, and two regular screwed elbows. There are 80 ft of
4-inch diameter commercial steel pipe. For water, take ρ = 1.94
slug/ft3 and μ = 2.09E−5 slug/ft⋅s. Take kvalve ≈ 2.8, kelbow ≈
0.64, kexit ≈ 1, and kvalve ≈ 0 (when the disk valve wide open). If
the flow rate is 0.55 ft3/s,...
A 38-in pump is installed for the system below. The pipe (100- cm diameter) has a friction factor of 0.012 and a total length of 20 km. Given that K = 0.5 (pipe entrance) and K. = 1.0 (pipe exit). For water at 80 degrees Fahrenheit, estimate the flow rate (in gpm), the power required (in horsepower, HP), and the net positive suction head required (in ft) to avoid cavitation for the system when the pump running. Elevation = 180...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago