Water enters the pump of a steam power plant at 20 kPa and 50 °C (p = 988 kg/m², &Pr = 12.352 kPa) at a rate of 0.15 m'/s. The diameter of the pipe at the pump inlet is0.20 m. What is the net positive suction head (NPSH) at the pump inlet? Three pumps are connected in series. According to pump performance curves, the freedelivery of each pump is as follows:Pump 1: 1600 L/min,If the flow rate for this pump system is 2400 L/min, which pump(s) should be shut off?Pump 2: 2200 L/min,Pump 3: 2800 L/min

Answered: Image /qna-images/answer/b8eecbcc-7b28-401c-85cf-f7e21e0056fc.jpg

Water enters the pump of a steam power plant at 20 kPa and 50 °C (p = 988 kg/m', & Pr = 12.352 kPa) at a rate of 0.15 m'/s. The diameter of the pipe at the pump inlet is 0.20 m. What is the net positive suction head (NPSH) at the pump inlet? %3D

Water enters the pump of a steam power plant at 20 kPa and 50 °C (p = 988 kg/m', & Pr = 12.352 kPa) at a rate of 0.15 m'/s. The diameter of the pipe at the pump inlet is 0.20 m. What is the net positive suction head (NPSH) at the pump inlet? %3D

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Determine the pressure at the higher end if the pressure at the lower end is 24.525 N/cm^2. 23.924…

Q: ind the elevation of water at reservoir C. Provide FBD and choose the right answer below

Q: A liquid flows into the tank at A at 4 m/s. Determine the rate, dy/dt, at which the level of the…

Q: Q1) Water discharges from a reservoir A through a 100 mm pipe 15 m long which rises to its highest…

Q: 2 and 3 from three reservoirs A,B and C, respectively, meet at a junction whose elvation is 366 m.…

A: Given:- elevation=366m Water levels at reservoir A and B are elevations =825 m and 716 m pipe 1:-…

Q: A pitot tube is inserted in a pipe of 30 cm diameter. The static pressure of the tube is 10 cm of…

Q: Un the igu The head loss irom point 1 to point 2 is 1.50 m and from point 2 to point 3 is 2.40 m.…

A: D=50mm L=8m

Q: A pipe discharges 150liters/sec of water into a reservoir at a point 1.80m below the water surface.…

A: Bernoulli's Equation P1γ+V122g+Z1=P2γ+V222g+Z2+hL Z1= 3.0 m Z2=0 m hL=0.65 m Q= 150 l/s= 0.15…

Q: find the elevation of water at reservoir C.

Q: an open circular vessel is 1m in diameter and 2m height. it contains water filled to a depth of…

A: The pressure at any point in a liquid filled vessel when liquid profile becomes paraboloid is given…

Q: The installed venturimeter on a pipe 25cm diameter in which the maximum flow is 125 liters per…

A: Qd = Cda1a2a12-a222gha1 = π4d2 = π40.252a1 = 0.049 m2h = 6 mQ = 1251000 = 0.125 m3/s

Q: Water flows through pipe A whose diameter is 30 cm and into parallel pipes 1, 2 and 3 and out…

Q: m³ 3 S Water flows at a rate of 0.035 in a horizontal pipe whose diameter is reduced from 15cm to…

Q: Water (Yw = 9.879 kN/m3) flows with a flow rate of 0.3 m/sec through a pipe AB of 10 m length and of…

Q: A pipe carrying oil (5G = 0.877) change in size from 150mm diameter in point 1 to 450mm diameter in…

A: Given data, Oil SG = 0.877 Diameter of pipe in section 1 = 150 mm Diameter of pipe in section 2 =…

Q: Two tanks A and B have 80 m difforence in water levels, and are connected by a pipe 0.3 m diameter…

A: area A=π4×d2=π4×0.32=0.07065 m2and friction loss for first half pipe length hf1=8fQ12L2π2gD5and…

Q: Figure 8-24 shows a pump drawing water from a reservoir and discharging it into the air at point B.…

A: Pressure at point A, pA=10 in Hg (vacuum) Pressure at point B, pB=0 (discharging into atmosphere)…

Q: 2. The suction pipe of a pump rises at a slope of 3 vertical in 4 along the pipe which is 12 cm in…

A: To find Maximum discharge that the pump may deliver?

Q: find the elevation of water at reservoir C.

A: Given: Pipe 1 L= 3000 m diameter = 200 mm = 0.2m f= 0.018 Pipe 2 L= 1200 m diameter = 300 mm = 0.3m…

Q: Two reservoirs whose surface levels differ by 30m are connected by a 600mm diameter and 3000m long.…

A: Given datadiameter of pipe=D=600mmLength of pipe=3000mheight of ridge summit=9mlet the depth of the…

Q: Q-2 Water flows through a vertical contraction (venturi) section. Piezometers are attached to the…

A: It is required to find the velocity of flow at minimum area section.

Q: Compute the lost head in a 150-mm pipe if it is necessary to maintain a pressure of 231 kPa at a…

A: Introduction- The energy expended in a fluid system due to friction throughout the length of a pipe…

Q: ind the elevation of water at reservoir C.

Q: Q3 a) Water flows at the rate of 900 L min from the reservoir and through the pipe shown in Figure.…

Q: 500 sin 10° 86.82 m .10° %3D L = 500 m

Q: A horizontal pipe of 150 mm diameter for the initial 30 m and 75 mm dimeter for the remaining 10 m…

Q: The flow is opened to the atmosphere at point D which is fed by a very wide reservoir that hasa…

A: Solution: considering the diagram a=7 b=2 a. Considering the Bernoulli equation between 1 and D…

Q: Water is pumped from reservoir A through 1850 m pipeline 600 mm across a valley to a second…

A: Given, Total Pipe length (L) = 1850 m Diameter (D) = 600 mm or 0.6 m Friction factor (f) = 0.02

Q: how long would it take to fill the swimming pool

A: discharge end is higher than the intake end

Q: An orifice meter that has an orifice cross-section of 0.00785 m² is placed in a tube of cross…

A: Given: Orifice cross section, A1 = 0.00785 m2 Tube cross section, A2 = 0.0314 m2 Upstream pressure,…

Q: hydraulic pump increases the pressure in a system from 500 kPa to 3 MPa at a flow rate of 2 e/s. The…

Q: An le Volve Pump open P=150 kPa Water sprotruding entrance

A: Given data in question Diameter of pipe Density of water Dynamic viscosity of water Length of pipe…

Q: A Reg.No-m length of smooth horizontal pipe is attached to a large reservoir as shown in Fig. 2. A…

A: Given:- The length of smooth horizontal pipe = Reg. No m = 5350 m The flow rate at which water gets…

Q: A pump draws water from reservoir A and lifts it to reservoir B as shown. The loss of head from A to…

A: Loss of head from A to 1 is 3 times the velocity head in the 150 mm pipe Loss of head from 2 to B is…

Q: A centrifugal water pump with a suction pipe is shown in Figure 3.5 Pump output is Q-0.03m'/s, the…

A: Apply Bernoullis theorem…

Q: A horizontal parallel plate ESP consists of a single duct 4.8m height and 6m long with 30cm plate to…

A: Given, Collection efficiency,η=94.4% Inlet loading=144 grains/m3 Gas flow rate=95 m3/min Height=4.8…

Q: ire hose has 100 mm diameter which reduces to a 20 mm nozzle discharging at 10+X m/s. (X=…

A: a) Given, Velocity = 16 m/s, Let the water reach to the height 'h' m, then Applying Bernoulli…

Q: Q-2 Water flows through a vertical contraction (venturi) section. Piezometers are attached to the…

Q: A venturi meter with a 10.16 cm throat installed in a 15.24 cm pipe which is inclined upward with an…

Q: Q: In a rough pipe of diameter 500mm and length 3500m, water is flowing at the rate of 0.5 m/s. If…

Q: The siphon in Fig. is used to draw water from the large open tank. If the absolute vapor pressure…

A: The free diagram is shown below,

Q: Two tanks A and B are connected by a pipe 30 m long. The first 21 m has a diameter of 75 mm and then…

Q: Q-2 Water flows through a vertical contraction (venturi) section. Piezometers are attached to the…

Q: 01(a) There are two reservoirs, A and B, with the water surface elevation in A 10 m higher than that…

A: Given- Height difference=10 mLength of pipes=100 mdiameter d1=30 cmdiameter d2=25 cm

Q: 4.96 Water is discharged at a flow rate of 0.3 m³/s from a narrow slot in a 200-mm-diameter pipe.…

A: Given: Discharge, Q=0.3 mDiameter, D=200 mmThickness, t=20 mm

Q: A pipeline with a pump leads to a nozzle as shown. Find the flow rate when pump develops an 80 ft…

A: Velocity head=v22gHead loss in 152 mm pipe=5v122gHead loss in 102 mm pipe=12v222gHead developed by…

Q: Q: In a rough pipe of diameter 500mm and length 3500m, water is flowing at the rate of 0.5 m'/s. If…

Q: (b) Water at 35°C flows steadily in a 4 cm dianeter pipe at velocity of 3.5 cm/s. The head loss is…

Q: Pb # 4: A Reg.No-m length of smooth horizontal pipe is attached to a large reservoir as shown in…

Q: Water at 15°C (? = 999.1 kg/m3 and ? = 1.138 × 10−3 kg/m·s) is flowing steadily in a 30-m-long and…

A: During flow, the change in pressure takes place and the difference between the pressure of two…

Concept explainers

Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

Question

Water enters the pump of a steam power plant at 20 kPa and 50 °C (p = 988 kg/m², &
Pr = 12.352 kPa) at a rate of 0.15 m'/s. The diameter of the pipe at the pump inlet is
0.20 m. What is the net positive suction head (NPSH) at the pump inlet?

Three pumps are connected in series. According to pump performance curves, the free
delivery of each pump is as follows:
Pump 1: 1600 L/min,
If the flow rate for this pump system is 2400 L/min, which pump(s) should be shut off?
Pump 2: 2200 L/min,
Pump 3: 2800 L/min

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

Q1) If the flow rate through a 10 cm diameter wrought iron pipe is 0.04 m3/s, and the difference in elevation H of the two reservoirs is 77. Calculate the power of the pump. Assume the pump efficiency is 85%.
For two dynamically similar pumps, manipulate the dimensionless pump parameters to show that DB = DA (HA/HB) 1/4(V.B/V.A) 1/2. Does the same relationship apply to two dynamically similar turbines?
3) A pump has a characteristic curve described by the equation:hp = 12-0.1Q^2 What is the pump characteristic curve for (a) a system having three of these pumps in series; and (b) a system having three of these pumps in parallel? Sketch the pump characteristics curve for each case.
If a net head of 150 m is to be generated through pumps of specific speed 30, rotational velocity 1450 RPM, and discharge rate of 0.2 m3/sec, determine the number of pumps required.
If the liquid of Prob. 10.89 is a superliquid (zero head lossoccurs with the flow of this liquid), then what will be the pumping rate, assuming that the pump curve is the same? 10.89: A pump that has the characteristic curve shown in the accompanying graph is to be installed as shown. What will be thedischarge of water in the system?
Calculate the pump capacity
Consider that water is pumped a distance equal to the last three digits of 917551848 in kilometer from a reservoir (Reservoir A) at mean sea level elevation to a second reservoir (Reservoir B) at elevation 50 ft. above mean sea level. The pipeline connecting the reservoirs has a diameter of 60 in and is constructed of concrete with an absolute roughness of 0.003. If the flow is equal to 917551848 in liter per week and the efficiency of the pumping station is 75%, what will be the monthly power bill if electricity costs is the same as the highest rate of the electricity provider of your community in cents/kwh?
Q/Suppose there are three identical pumps in series, each producing 1500 ft of the head at flow rate 1000 gpm capacity, and another case there are three pumps in series that have differing heads of 1500 ft, 1200 fi, and 1400 ft at 1000 gpm, Find the total head and flow rate generated and discuss the different if conneet parallel ?
A pump is being utilized to deliver a flow rate of 500 li/sec from a reservoir of surface elevation of 65 m to another reservoir of surface elevation 95 m. The total length and diameter of the suction and discharge pipes are 500 mm, 1500 m and 30 mm, 1000 m respectively. Assume a head lose of 2 me- ters per 100 m length of the suction pipe and 3 m per 100 m length of the discharge pipe. What is the required horsepower of the pump? PLEASE INCLUDE FIGURE AND DERIVATION
Operating conditionsDetermine the operating conditions (HP, Q, ep, and Pi) of a pump capable of moving water (68°F) from reservoir A (water surface elevation = 102 ft) to reservoir B (water surface elevation = 180 ft). The 12” diameter pipe connecting the two reservoirs has a length of 8700 ft. The pump characteristics are given in the graph; plot the system curve on this graph and include with your solution. To calculate friction loss, assume fully turbulent conditions with e = 0.006 ft, and include minor losses for a square-edged entrance and submerged exit. Also verify that the pump efficiency obtained from the pump characteristic curves corresponds with the pump efficiency obtained from the power equation (? =????; note that 1 HP = 550 ft-lb/s). Then repeat the calculations for 50 years from now when e has increased to 0.04 ft. Plot the new system curve on the graph and verify the new efficiency.
A pump is being utilized to deliver a flow rate of 500 li/sec from a reservoir of surface elevation of 65 m to another reservoir of surface elevation 95 m. The total length and diameter of the suction and discharge pipes are 500 mm, 1500 m and 30 mm, 1000 m respectively. Assume a head lose of 2 me- ters per 100 m length of the suction pipe and 3 m per 100 m length of the discharge pipe. What is the required horsepower of the pump? (PLEASE USE BERNOULLI'S ENERGY EQUATION) AND INCLUDE COMPLETE SOLUTION
Neglecting head losses, determine what power the pump must deliver to produce the flow as shown. Here the elevations at points A, B, C, and D are 40 m, 65 m, 35 m, and 30 m, respectively. The nozzle area is 25 cm2.