Water flows steadily in a 100 mm diameter galvanized-iron pipe 200 m long. The pressure at...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Water flows steadily in a 100 mm diameter galvanized-iron pipe 200 m long. The pressure at section (1) is 300 kPa, and the pressure at section (2) is 150 kPa. Minor losses are presented in the system through two 90° standard elbow, one globe valve, and one angle valve. For a volumetric flow rate of Q = 0.0053 m/s calculate: (a) The velocity in the pipe, (b)The major losses, (c) The minor Losses, (d) Height difference, h, between sections (1) and (2). Properties of water: p=1000 kg/m³. µ = 1.14 x 10-3 kg/m-s. Hint: Graphs and tables to calculate minor and major losses are in the pages 2 and 3. %3! %3D (2) h = ? Globe valve Angle valve (1) Roughness for Pipes of Common Engineering Materials Diffusers 1 Cp, = 1- AR %3D Roughness, e (5 - "5) = "ly 4.0 12, 8. Pipe Feet Millimeters 6. 3.0 AR = (1 + 스 tan ó)2 Riveted steel 0.003–0.03 0.9-9 R Concrete 0.001-0.01 0.3-3 0.70 Flow Wood stave 0.0006-0.003 0.2-0.9 2.0 Cast iron 0.00085 0.26 1.8 0.60 Galvanized iron 0.0005 0.15 0.40 1.6 20 = 20 degrees Asphalted cast iron 0.0004 Commercial steel 0.12 0.50 0.00015 20 = 15 degrees 0.046 1.4 -0.45 Drawn tubing C, = 0.35, 5. -0.40 0.000005 0.0015 20 10 degrees 20 0.35 1.3 0.30 Minor Losses (Pipe Entrances) Entrance Type Minor Loss Coefficient, K 1.2 0.30 Reentrant 0.78 18 16 14, 12 Square-edged 0.5 0.8 1.0 1.5 2.0 3.0 4.0 5.0 8.0 10.0 0.5 Dimensionless length, N/R1 Rounded r/D Valves and Fittings 0.02 0.06 2 0.15 K 0.28 0.15 0.04 Fitting Type Equivalent Length,“ LJD Contractions and Expansions Valves (fully open) Contraction Expansion Gate valve 8 Globe valve 340 A1 A2 A1 A2 Angle valve Ball valve 150 AR = A2IA1 AR = A1/A2 3 1.0 Lift check valve: globe lift angle lift Foot valve with strainer: poppet disk 1.0 600 0.8 0.8 55 0.6 E 420 0.6 hinged disk 75 0.4 0.4 Standard elbow: 90° 30 0.2 E 45° Return bend, close pattern Standard tee: flow through run 0.2 16 50 0.2 0.4 0.6 0.8 1.0 20 Area ratio, AR flow through branch 60 Contraction loss coefficient, K. N O Area ratio, AR = A2/A1 Expansion loss coefficient, K, 'y = [嘉-] egrees Water flows steadily in a 100 mm diameter galvanized-iron pipe 200 m long. The pressure at section (1) is 300 kPa, and the pressure at section (2) is 150 kPa. Minor losses are presented in the system through two 90° standard elbow, one globe valve, and one angle valve. For a volumetric flow rate of Q = 0.0053 m/s calculate: (a) The velocity in the pipe, (b)The major losses, (c) The minor Losses, (d) Height difference, h, between sections (1) and (2). Properties of water: p=1000 kg/m³. µ = 1.14 x 10-3 kg/m-s. Hint: Graphs and tables to calculate minor and major losses are in the pages 2 and 3. %3! %3D (2) h = ? Globe valve Angle valve (1) Roughness for Pipes of Common Engineering Materials Diffusers 1 Cp, = 1- AR %3D Roughness, e (5 - "5) = "ly 4.0 12, 8. Pipe Feet Millimeters 6. 3.0 AR = (1 + 스 tan ó)2 Riveted steel 0.003–0.03 0.9-9 R Concrete 0.001-0.01 0.3-3 0.70 Flow Wood stave 0.0006-0.003 0.2-0.9 2.0 Cast iron 0.00085 0.26 1.8 0.60 Galvanized iron 0.0005 0.15 0.40 1.6 20 = 20 degrees Asphalted cast iron 0.0004 Commercial steel 0.12 0.50 0.00015 20 = 15 degrees 0.046 1.4 -0.45 Drawn tubing C, = 0.35, 5. -0.40 0.000005 0.0015 20 10 degrees 20 0.35 1.3 0.30 Minor Losses (Pipe Entrances) Entrance Type Minor Loss Coefficient, K 1.2 0.30 Reentrant 0.78 18 16 14, 12 Square-edged 0.5 0.8 1.0 1.5 2.0 3.0 4.0 5.0 8.0 10.0 0.5 Dimensionless length, N/R1 Rounded r/D Valves and Fittings 0.02 0.06 2 0.15 K 0.28 0.15 0.04 Fitting Type Equivalent Length,“ LJD Contractions and Expansions Valves (fully open) Contraction Expansion Gate valve 8 Globe valve 340 A1 A2 A1 A2 Angle valve Ball valve 150 AR = A2IA1 AR = A1/A2 3 1.0 Lift check valve: globe lift angle lift Foot valve with strainer: poppet disk 1.0 600 0.8 0.8 55 0.6 E 420 0.6 hinged disk 75 0.4 0.4 Standard elbow: 90° 30 0.2 E 45° Return bend, close pattern Standard tee: flow through run 0.2 16 50 0.2 0.4 0.6 0.8 1.0 20 Area ratio, AR flow through branch 60 Contraction loss coefficient, K. N O Area ratio, AR = A2/A1 Expansion loss coefficient, K, 'y = [嘉-] egrees
Expert Answer:
Answer rating: 100% (QA)
a d 100 mm 01 m L 200 m P1 300 kPa 300000 Nm2 P2 150 kPa 150000 Nm2 Q 00053 m3s 1000 kgm3 1... View the full answer
Related Book For
Fundamentals of Thermodynamics
ISBN: 978-0471152323
6th edition
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
Posted Date:
Students also viewed these mechanical engineering questions
-
Information about Sherpers Boards is presented in E6-4. Additional data regarding Sherpers sales of Xpert snowboards are provided below. Assume that Sherpers uses a perpetual inventory system....
-
Gomez is considering a $200,000 investment with the following net cash flows. Gomez requires a 9% return on its investments. (PV of $1, FV of $1, PVA of $1, and FVA of $1) (Use appropriate factor(s)...
-
A travel company wants to identify the salient features of families that have visited a vacation resort during last two years. Data were obtained from a sample of 30 households and discriminant...
-
The author explores the dangerous world of undercover police work. Having read this chapter, do you believe this type of police work has the capability of corrupting police officers? If so why, and...
-
Carbon tetrachloride is an ozone-depleting chemical found in the atmosphere. The table below shows the concentration of the chemical in parts per trillion (ppt) measured in the European Union. a....
-
In a 2D or 3D array, which index represents the x axis or column number?
-
An automobile would be classified as what type of product? a. Convenience b. Shopping c. Specialty d. Unsought
-
A Partial list of Berry Hotels costs is provided below. a. cost of laundering towels and bedding. b. Cost of food. c. Cost to paint lobby. d. Cost of advertising in local newspaper. e. Cost to mail a...
-
In a worm and worm wheel, worm wheel has 120 teeth. The length of handle is 30cm and diameter of load drum is 10 cm. To lift a load of 1800N effort of 350N is required. If maximum efficiency is 40%,...
-
The number of auto accidents in Athens, Ohio, is related to the regional number of registered automobiles in thousands (X), alcoholic beverage sales in $10,000s (X), and rainfall in inches (X3)....
-
Let A ( t ) be the amount of money in an account that pays interest that is compounded some number of times per year. Show that the percentage rate of growth, A ( t ) / A ( t ) , is constant. What...
-
Why is commercial liability insurance often arranged in layers? What are the advantages and the disadvantages? 2. What is the difference between a following form policy and stand-alone excess...
-
Publicity -How much publicity has the case received? -What are news outlets focusing on? -How is the issue being framed in the media as opposed to what might be the real legal issue? -Is publicity on...
-
How GDP percentage connect with wage share according to Karl Marx's approach to value? You should offer useful examples and data to illustrate your answer (500 words) include citation.
-
Minimize the following Boolean function by using k - map a ) ) F ( ( A , , B , , C ) = \ ) = \ Sigma m ( 0 , 1 , 6 , 7 ) + \ ( 0 , 1 , 6 , 7 ) + \ Sigma d ( 3 , 4 , 5 ) ( 3 , 4 , 5 ) b ) ) F ( (...
-
Both the output ports of the power splitter are terminated with identical half-wave dipole antennas, whose radiation efficiency is 0.79 and load impedance = 70 . Assume that the electromagnetic...
-
Review the different types of adjusting entries for this module and answer the questions below: What is the difference between the cash basis and the accrual basis of accounting? (use youre own...
-
In your audit of Garza Company, you find that a physical inventory on December 31, 2012, showed merchandise with a cost of $441,000 was on hand at that date. You also discover the following items...
-
A heat exchanger increases the availability of 3 kg/s water by 1650 kJ/kg using 10 kg/s air coming in at 1400 K and leaving with 600 kJ/kg less availability. What are the irreversibility and the...
-
Do Problem 3.75, but for the substance ammonia.
-
Consider a 1 m3/s flow of atmospheric air at 100 kPa, 25C, and 80% relative humidity. Assume this flows into a basement room where it cools to 15C, 100 kPa. How much liquid water will condense out?
-
When would you prefer to use busy-wait I/O over interrupt-driven I/O?
-
Draw UML diagrams for the read of one character from an 8251 UART. To read the character from the UART, the device needs to read from the data register and to set the serial port status register bit...
-
If you could only have one of vectors or priorities in your interrupt system, which would you rather have?
Study smarter with the SolutionInn App