Includes general recommendations on design and application of pipe, valves, and fittings for typical processes; general information on installation, quality control, and items related to piping systems such as insulation; and specific recommendations for the design of particular piping systems.
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Gas molar mass is approximately equal to the molar mass of dry air times the gas specific gravity at standard conditions for most gases the compressibility factor Z is approximately equal to 1 at standard conditions. The molar mass of dry air is taken as For gas mixtures, gas specific gravity is easier to measure than the molar mass.
For liquids lighter than or equal to water the density can be defined as degrees API, or degrees Baume Be-. Calculate the maximum recommended piping erosional velocity and flow rate for single phase liquid. Calculate the maximum recommended piping erosional velocity and flow rate from fluid density for general fluids. The pressure design thickness equals the nominal wall thickness minus the corrosion allowance and fabrication allowance. The corrosion allowance includes mechanical allowances such as threads and damage etc.
I have used table 2. Could you help me get a credible reference for such values? You can use the accurate Cv values for the indicated types of reduced and full bore valves. These values are furnished by manufacturers and can be found in their catalogs or in their information.
This workbook is YOUR work product and you should do the work when not at the beach. Perhaps some members can help by contributing their information from valve vendors. What's the point behind stating such conditions? Where should I state them? Are you serious?
Identifying the standard conditions makes all the difference in the world. Do a serious research on this topic in our Forums and in other Forums and you will discover why this is such an important topic when dealing with compressible fluids. I tried to create a subroutine for this depending on the nominal pipe size and schedule no. Could you help me do that? It seems it needs good knowledge of VB which I currently do not have.
Again, this workbook is YOUR work product. Why do you decide to get involved in such an interesting, challenging, and profitable project and then get lazy and lose interest? If you want to create something of value, you must invest value in it — your hard work. That is what will make it valuable — at least to you.
Since I also consider this a valuable engineering exercise for you — and ALL young engineers — I will contribute what is a classic example on what I mean by professional quality. Attached to this post is a workbook on the same topic that shows you how one engineer approached and resolved the problem. You can easily un-protect the worksheet and study and modify the algorithm s.
Note that this example does not include the valves and fittings resistances which your program does. This is a good opportunity for you to include this kind of input into your program and produce something of superior quality, convenience, and accuracy. Also note that these calculation forms should have a reference to what relationships and equations are used to generate the results.
I see that you have not followed my recommendation for a detailed explanation of the limitations to be expected in compressible flow calculations. I hope these comments serve to help you improve your work product and that you share the ultimate results with our Forum members. XLS Posted 26 April - PM Dear Art, I am trying to do my best answering the comments and trying to correct the sizing sheet. I am not against any comment as long as it's adding a value to it and your comments were valuable and I am trying to find a way to implement them.
I haven't lost interest at all, I am trying to teach myself more things in excel to implement the comments to the extent that I am looking for the nearest advanced excel training course in town to apply and learn more Be sure I am not losing interest and I am not taking your comments lightly at all This was of the great lessons I learnt from my former boss Sherif.
For excel training, i dont think you need to go anywhere. You just think what you want to do and search on internet.
You will difinetely find a solution. Posted 26 April - PM Sherif: You are demonstrating more eagerness and ambition to continue your self-improvement as an engineer than most of the young engineers that come to our Forums.
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