Reference no: EM13835857
1. The diagram shown below represents a process for which a pump and associated pipe work require to be correctly sized.
The liquid is to be pumped from the underground storage vessel which is vented to atmosphere (assume 1 bar pressure) to a pressurised container supported some distance above ground level. The pump is sited at ground level and must be capable of delivering 0.01 m3 s-1 with a maximum velocity of 1.8 ms-1
Data:
Liquid density, Ρ = 960 kg m-3
Liquid viscosity, μ = 0.081 Pa s
(a) Calculate the theoretical diameter of the pipe; the nominal pipe diameter chosen from the table; and the actual average velocity in the nominal pipe.
|
Inside diameter (mm)
|
|
20
|
|
25
|
|
32
|
|
40
|
|
50
|
|
65
|
|
80
|
|
90
|
|
100
|
(b) Calculate Reynolds number for the process and hence the head loss due to friction. State any assumptions made.
(c) Using the following table for minor head losses, calculate the minor head losses for the system using both the equivalent length method and the number of velocity heads method. Compare the head losses estimated by each method.
|
Fitting
|
Equivalent length as number
of pipe diameters
|
Number of velocity
heads lost
|
|
Standard 90) bend
|
37
|
075
|
|
Entry to pipe
|
15
|
03
|
|
Exit front pipe
|
50
|
1
|
(d) Calculate the head required for the pump and its power requirement assuming a 70% efficiency.
(e) If the same pump was later used to pump water from the lower reservoir to the upper reservoir, what flow rate of liquid could be achieved? (N.B.This may require an iterative solution).
State any assumptions made.
Water density, Ρ = 1000 kg m-3
Water viscosity, μ = 0.001 Pas
|
Write an essay on conflicts between the iran
: Write an essay on conflicts between The Iran
|
|
Describes how a vpn can be implemented
: Compose a 2-3 page report to CEO Deese that describes how a VPN can be implemented and what security protocols are needed to protect the Nitro Hardware Company's digital information
|
|
Baby boomers seek new ways to escape
: Look up the article “Baby Boomers Seek New Ways to Escape” through the Wall Street Journal database (from June 24, 2003). Use this article to help write a memo outlining your recommendations for developing managers who are stuck in their jobs or feel..
|
|
Explain network security plan and make modifications
: Please review your previous work including that of last week with your Network Security Plan and make revisions and modifications as necessary based on our discussions and research up to this point. This is a plan that would be submitted to your c..
|
|
Calculate reynolds number for the process
: Calculate Reynolds number for the process and hence the head loss due to friction - calculate the minor head losses for the system using both the equivalent length method and the number of velocity heads method.
|
|
Explain how many hours per week the apprentice will work
: In your apprenticeship, make sure to include specific skills the apprentice will be learning, the modeling and practice techniques that will be used, and the feedback process that will be incorporated (both informal and formal). Explain how many hour..
|
|
Settlement of investment dispute
: Case- In the Matter of the Group Inc. and Raymond L. Loewen, Claimantsa/Investors v. United States of America Respondent/Party. International Centre for the Settlement of Investment Dispute ICSID Case No. ARB (AF)/98/3
|
|
Describe the forces that affect workplace and learning
: In your own words, describe the forces that affect workplace and learning. Use an example of these forces NOT found in your textbook. Identify and summarize five models used to organize training departments. If you were the Vice President of Human Re..
|
|
What are some concerns with interconnectivity
: What are some of the advantages and disadvantages of telecommunications in the United States and other countries. What are some concerns with interconnectivity. What would you propose to smooth effective communication between countries in respect ..
|