Compute the resulting pressure in kPa after a "real" diffuser in which the energyloss due to sudden enlargement is considered for the flow of water at 25°C from a36 mm OD x 2.0 mm wall copper tube to an 85 mm OD x 2.5 mm wall coppertube, the pipes are the same elevation. The volume flow rate is 150 L/min and thepressure before the enlargement is 505.823 kPa.NB: OD = Outside Diameter, Wall refers to the pipe's thickness (t)Hints:• Obtain the specific weight of water for the given temperature from AppendixA (Table A.1).• Obtain the resistance coefficient (K) for sudden enlargement from Table10.3B in chapter 10.Instructions: Only express the areas in scientific notation to three decimal placesbut round off to three decimal places in normal number format where necessarythroughout your calculations leading to the final answer and including the finalanswer for all other computations excluding the area. 10.10 Resistance Coefficiemts for Valves and Fittings297expressed as equivalentEquivalent Lengthin PipeDiametersТуреLIDGlobe valve-fully openAngle valve-fully open340Gate valve-fully open1504 open35½ open1604 openCheck valve-swing type900100Check valve-ball type150Butterfly valve-fully open, 0-200 mm (2-8 in.)45-250-350 mm (10-14 in.)35400-600 mm (16-24 in. )25Foot valve-poppet disc typeFoot valve-hinged disc type4207590 standard elbow3090 long radius elbow2090 street elbow5045° standard elbow1645° street elbow26Close return bend50Standard tee-with flow through run2060-with flow through branchSource: Crane Valves, Signal Hill, CA.We can also compute L, = (L/D)D. Note, however, that this would be valid onlyif the flow in the pipe is in the zone of complete turbulence.If the pipe is made from a material different from new, clean, commerciasteel pipe, it is necessary to compute the relative roughness D/e, and then use th.Moody diagram to determine the friction factor in the zone of complete turbulence%3DFrictionFactor frTABLE 10.5 Friction factor inne of complete turbulence for new,dean, commercial steel pipeFrictionNominalNominalFactor frPipe Size (in)Pipe Size (in)32, 40.0170.02750.0160.0250.0150.0238-100.014140.02212-160.0130.0211½18-240.0120.0190.01822, 3

In this problem water is flowing from the pipe and pipe has enlarging section. Now in this case…

Compute the resulting pressure in kPa after a "real" diffuser in which the energy loss due to sudden enlargement is considered for the flow of water at 25°C from a 36 mm OD x 2.0 mm wall copper tube to an 85 mm OD x 2.5 mm wall copper tube, the pipes are the same elevation. The volume flow rate is 150 L/min and the pressure before the enlargement is 505.823 kPa. NB: OD = Outside Diameter, Wall refers to the pipe's thickness (t) Hints: • Obtain the specific weight of water for the given temperature from Appendix A (Table A.1). • Obtain the resistance coefficient (K) for sudden enlargement from Table 10.3B in chapter 10.

Compute the resulting pressure in kPa after a "real" diffuser in which the energy loss due to sudden enlargement is considered for the flow of water at 25°C from a 36 mm OD x 2.0 mm wall copper tube to an 85 mm OD x 2.5 mm wall copper tube, the pipes are the same elevation. The volume flow rate is 150 L/min and the pressure before the enlargement is 505.823 kPa. NB: OD = Outside Diameter, Wall refers to the pipe's thickness (t) Hints: • Obtain the specific weight of water for the given temperature from Appendix A (Table A.1). • Obtain the resistance coefficient (K) for sudden enlargement from Table 10.3B in chapter 10.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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