Homework Answers
(a)Operating head of a pump can be defined as the total height above the suction inlet that a pump can lift a fluid(in our case-water).So the operating head gives you the height of the water that can be pumped by the pump above the suction inlet in feets/metres.
Flow rate of a pump can be defined as the volume of fluid that is pushed by the pump throgh the pumping system in a given time.So the flow rate gives the total quantity of water pushed by the pump in Litres/second or Gallons/minute.
(b) So, yes operating head can be defined as the elevation of water that can be lifted by the pump through the system above the suction inlet after taking into account the frictional losses if any.
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4. What does the operating head and flow rate of a pump mean in terms of...
Find Pipe Velocity, volumetric flow rate, head delivered by pump and convert to Kj/s. Head loss...
Find Pipe Velocity, volumetric
flow rate, head delivered by pump and convert to Kj/s. Head loss is
50m or 27V^2/2g
Z2=100m
dit View Favorites Tools Help ¡Southwest Airlines My Ac., ?? Web Slice Gallery ? Zi-70 ml D-0.25 m Pump Click to see additional instructions In the figure, water is pumped from a lower reservoir to a higher reservoir through a pipe at a steady rate of flow. The pipe head loss is g Determine the pipe velocity, in units...
3.130 points) The volume flow rate through a pump system operating between two harge bodies of...
3.130 points) The volume flow rate through a pump system operating between two harge bodies of water of density p, is V. The head loss through the pipe/turbime network is a. (15 points) Derive and expression for the power provided by the pump, W, in terms of the known variables only. The "know variables" are p, V, H, D and g. b. (5 points) Given V 100 m/s, g-9.81 m/s?, D-1 m and H-20 m. What is the average velocity...
4.45 A two-tank pump/pipe system has a head requirement of 23.4 ft at a flow rate of 100 gpm. The...
4.45 A two-tank pump/pipe system has a head requirement of 23.4 ft at a flow rate of 100 gpm. The elevation difference between the fluid surfaces in the tanks is 10 ft. The pump is a Bell & Gossett Series e-80 Model 2.5x2.5x9C operating at 1170 rpm with a 7.5-inch impeller. a. Develop an cquation for the system curve. b. Use a computer program to develop an equation for the 7.5-inch impeller using data read from the pump performance curve...
1) In the figure below, assume the pipe diameter is 4-inches, (f = 0.035), Distance from...
1) In the figure below, assume the pipe diameter is 4-inches,
(f = 0.035), Distance from BC is 18-feet, distance DE is
187-feet and ∆ z = 69-feet. The elevation of C is
14-feet above the lower water surface. If the pressure
head @ C is to be no less than (–) 20 feet, what is the maximum
flow rate that can be pumped? (Flow rate in GPM)
2) If the pump from the previous problem has 63%
efficiency, what horsepower must be...
For efficiency and flow rate curve for a pump, why does the curve fall off after...
For efficiency and flow rate curve for a pump, why does the curve fall off after the best efficiency point? Why does a high flow rate mean higher efficiency? For hydraulic power vs flow rate curve for a pump, what is the relationship? why does a high flow rate mean higher hydraulic power? concept behind this?
Prob-2 What power must be supplied by the pump to the flow if water (T -20°C)...
Prob-2 What power must be supplied by the pump to the flow if water (T -20°C) is pumped through the 300 mm steel pipe from the lower tank to the upper one at a rate of 0.314 m?s? Situation: Properties: Water is pumped through a steel pipe from one tank to another From Table 10.6 K-003: Ks-035 Kg - 10. D-300mm. L-140m. Q=0.314 m/s. Water 20°C). Table A = 10-m. 81 - 200 m. = 235m. Elbow radius is 300...
What power must be supplied by the pump to the flow if water (T = 20°C)...
What power must be supplied by the pump to the flow if water (T = 20°C) is pumped through the 300 mm steel pipe from the lower tank to the upper one at a rate of 0.314 m/s? Situation: Properties: Water is pumped through a steel pipe from one tank to another. From Table 10.5: K. -0,03; Ko - 0.35; Kg - 1.0. D - 300 mm, L - 140 m, Q -0.314 m/s. Water (20°C), Table A.5: v =...
Project-Design Problem: A family of water pumps produced by a given pump manufacturer have performance and...
Project-Design Problem: A family of water pumps produced by a given pump manufacturer have performance and efficiency curves that can be characterized by the following dimensionless equations: Pump head 6 = 6.04-1616 where and 5 nD Pump efficiency n = 705-91,5006 where n = (power to water) / (elect power input) In the above equations, is the dimensionless pump head and is the dimensionless volumetric flow rate. h, is the pump head, n is the pump shaft/impeller rotation rate, and...
what is the velocity head at the inlet pump? Find the value of head loss (consider...
what is the velocity head at the inlet pump?
Find the value of head loss (consider entrance, friction,
elbow and valve losses). Also, find pressure at the inlet
pump
water is at 80 degrees C
Water is being pumped from the tank at a rate of 475 L/min
-115 m E Pump Globe valve fully open DN 65 Schedule 40 steel pipe 1.40 m 0.75 m Standard elbows (2)
A centrifugal pump test yields the following data: Pump Head Flow (m)(L/min) 30 25 20 40 The pump...
A centrifugal pump test yields the following data: Pump Head Flow (m)(L/min) 30 25 20 40 The pump curve can be approximated by a parabola. This pump draws water from a large reservoir. The discharge of the pump feeds 150 m of 1.5 cm inside diameter pipe and then 225 m of 3 cm inside diameter pipe.. The two pipes both have a roughness of 0.5 mm The 3 cm pipe discharges to atmosphere a distance 40 m below the...
Find Pipe Velocity, volumetric
flow rate, head delivered by pump and convert to Kj/s. Head loss is
50m or 27V^2/2g
Z2=100m
dit View Favorites Tools Help ¡Southwest Airlines My Ac., ?? Web Slice Gallery ? Zi-70 ml D-0.25 m Pump Click to see additional instructions In the figure, water is pumped from a lower reservoir to a higher reservoir through a pipe at a steady rate of flow. The pipe head loss is g Determine the pipe velocity, in units...
3.130 points) The volume flow rate through a pump system operating between two harge bodies of water of density p, is V. The head loss through the pipe/turbime network is a. (15 points) Derive and expression for the power provided by the pump, W, in terms of the known variables only. The "know variables" are p, V, H, D and g. b. (5 points) Given V 100 m/s, g-9.81 m/s?, D-1 m and H-20 m. What is the average velocity...
4.45 A two-tank pump/pipe system has a head requirement of 23.4 ft at a flow rate of 100 gpm. The elevation difference between the fluid surfaces in the tanks is 10 ft. The pump is a Bell & Gossett Series e-80 Model 2.5x2.5x9C operating at 1170 rpm with a 7.5-inch impeller. a. Develop an cquation for the system curve. b. Use a computer program to develop an equation for the 7.5-inch impeller using data read from the pump performance curve...
1) In the figure below, assume the pipe diameter is 4-inches,
(f = 0.035), Distance from BC is 18-feet, distance DE is
187-feet and ∆ z = 69-feet. The elevation of C is
14-feet above the lower water surface. If the pressure
head @ C is to be no less than (–) 20 feet, what is the maximum
flow rate that can be pumped? (Flow rate in GPM)
2) If the pump from the previous problem has 63%
efficiency, what horsepower must be...
Prob-2 What power must be supplied by the pump to the flow if water (T -20°C) is pumped through the 300 mm steel pipe from the lower tank to the upper one at a rate of 0.314 m?s? Situation: Properties: Water is pumped through a steel pipe from one tank to another From Table 10.6 K-003: Ks-035 Kg - 10. D-300mm. L-140m. Q=0.314 m/s. Water 20°C). Table A = 10-m. 81 - 200 m. = 235m. Elbow radius is 300...
What power must be supplied by the pump to the flow if water (T = 20°C) is pumped through the 300 mm steel pipe from the lower tank to the upper one at a rate of 0.314 m/s? Situation: Properties: Water is pumped through a steel pipe from one tank to another. From Table 10.5: K. -0,03; Ko - 0.35; Kg - 1.0. D - 300 mm, L - 140 m, Q -0.314 m/s. Water (20°C), Table A.5: v =...
Project-Design Problem: A family of water pumps produced by a given pump manufacturer have performance and efficiency curves that can be characterized by the following dimensionless equations: Pump head 6 = 6.04-1616 where and 5 nD Pump efficiency n = 705-91,5006 where n = (power to water) / (elect power input) In the above equations, is the dimensionless pump head and is the dimensionless volumetric flow rate. h, is the pump head, n is the pump shaft/impeller rotation rate, and...
what is the velocity head at the inlet pump?
Find the value of head loss (consider entrance, friction,
elbow and valve losses). Also, find pressure at the inlet
pump
water is at 80 degrees C
Water is being pumped from the tank at a rate of 475 L/min
-115 m E Pump Globe valve fully open DN 65 Schedule 40 steel pipe 1.40 m 0.75 m Standard elbows (2)
A centrifugal pump test yields the following data: Pump Head Flow (m)(L/min) 30 25 20 40 The pump curve can be approximated by a parabola. This pump draws water from a large reservoir. The discharge of the pump feeds 150 m of 1.5 cm inside diameter pipe and then 225 m of 3 cm inside diameter pipe.. The two pipes both have a roughness of 0.5 mm The 3 cm pipe discharges to atmosphere a distance 40 m below the...
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