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# Excel sheet for basic design of pressure vessels

 Last Updated: 13-Sep-2014 Category: Mechanical Projects Author: Farazdak Member Level: Silver Points: 70

In this post I shall share with you a small but effective Excel sheet that I have developed which gives us the basic design (thickness, pressure, volume etc.) of a non-critical pressure vessel. This is particularly useful when one is provided with only a General Assembly drawing.

I am in the engineering field and working in a company that is into the fabrication of Pressure Vessels. It's a small company and we do not have dedicated designers employed. I carry out the estimation and costing of Pressure Vessels required by clients.

Generally, the client provides us with only a General Assembly drawing and we have to determine the thickness and size of the vessel according to the criteria of pressure and volume given by them. This was one of the major hurdles I faced while estimating for the item. I had to go through the exercise of determining the thickness by carrying out many different calculations. Moreover, I had to keep in mind the optimum size (height to width/diameter ratio) of the vessel too. If for a certain volume, I changed only the diameter, the thickness would change. Conversely, if I changed the height, the thickness would change again. To overcome this problem and to make my life easier, I started tinkering around with formulas in Excel. In the beginning, I had just fed in the calculation formulas individually and without any co-relation. But as is the case with any development, I was not satisfied and kept on upgrading my Excel sheet. Slowly, over the days and weeks, I created the sheet that I wanted and that is what you can see attached here.

I shall give a brief description of how it works: The very beginning of the sheet has a few black cells which are the only cells where one can insert the basic data such as diameter & length of shell, pressure, type of ends (ellipsoidal, torispherical, conical etc.), stress value etc. If you have the diameter & length as well as the design pressure, then, after you insert the data in the relevant cells you can see the thickness of the plates you require to build your vessel. If you do not have the diameter and length and only the volume is given then, by keeping your eye on the "volume of vessel" cell you can tinker around with the diameter and length cells till you get the right size. There is also an option of knowing the maximum allowable pressure a vessel can withstand given a certain thickness. After you get all the data in order, you can also view the empty weight of the vessel (shell + ends only)

The central portion of the sheet displays the details of the ends such as size, volume, area, weight and, most importantly, the blank size (required for the forming of dished ends). There is also a small conversion table on the extreme right where you can convert the pressure in different units like psi to kg/cm²g to MPa.

I have tried to make this excel sheet as user-friendly as possible complete with cell comments explaining how data is to be inserted in their respective cells.

When it comes to full-fledged designing of a pressure vessel, I am a novice but this sheet helped me a lot in getting the basics right. I am not sure how many people will find this useful but I can say that I did find it very handy for my calculations. I shall be very happy if it helps other people too.

Note: The formulas used for design calculations have been taken from the handbooks - Pressure Vessel Design Manual by Dennis Moss & Pressure Vessel Handbook by Eugene F. Megyesy

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Responses to "Excel sheet for basic design of pressure vessels"
Author: RAGHU    11 Mar 2014Member Level: Bronze   Points : 0
Dear Mr.Faraz

It is really interesting. But the Excel sheet is missing. Can you get it attached?

Regards

Author: Farazdak    14 Mar 2014Member Level: Silver   Points : 2
The link to download it is still there. I just checked it. Can you see the Pin icon with the word "Attachments" beside it ? If you click that you will be taken to another page where you can download the file.

Author: noin    14 Mar 2014Member Level: Bronze   Points : 0

Author: Farazdak    18 Mar 2014Member Level: Silver   Points : 3

Author: Mehul Shah    13 May 2014Member Level: Bronze   Points : 0
Dear Mr. Faraz, I am also not able to see the link in this article. Can you also forward the excel file to my e-mail address - mehyash@yahoo.com >

Mehul Shah

Guest Author: bala     19 May 2014
This is very interesting. I can not find any attachments. please forward the same to my mail id:balachem1@yahoo.co.in.

Guest Author: radhakrishnan     11 Jul 2014
Dear Mr. Faraz

Its a fantastic job. Really nice. But can't to find the attachment. Please upload it soon.

Guest Author: sethuraman Ramakrish     30 Jul 2014
Dear friend,

Can you send me the sheet to my email id.

Sethu.raman24@gmail.com

Author: Farazdak    09 Aug 2014Member Level: Silver   Points : 0

Guest Author: Terence Tan     21 Aug 2014
Hi Sir,

Guest Author: abbas yoosaf     23 Aug 2014

Guest Author: Humberto     04 Sep 2014
Dear friend,

Can you send me the sheet

Guest Author: rhoel     07 Sep 2014
sir
can you please send me the excel sheet with formula

Author: snehisingh    09 Sep 2014Member Level: Bronze   Points : 0
Hey!
This is really very beneficial for the engineering students.
Kindly attach the excel sheet.

Guest Author: mahendra joshi     10 Sep 2014
hello sir can you please provide sheet for cost estimation of pressure vessels

Guest Author: mahendra joshi     10 Sep 2014
hello sir

kindly request you for sending excel sheet for pressure vessel estimation .

I need sheet for cost estimation .

thanks for such helping to us .

Guest Author: Sana     11 Sep 2014
Please send me this sheet as well. I am an engineering student working on a similar problem. my email ID is sana.syed16@gmail.com

Author: Farazdak    13 Sep 2014Member Level: Silver   Points : 2

Guest Author: Faizal     13 Sep 2014
Please send me the file to faizalathoty@gmail.com.

Author: Mohammad    16 Sep 2014Member Level: Bronze   Points : 0
Dear Faraz,
Please send file to the email ID, msedaghat@hotmail.com.

Guest Author: M.Karamipoor     17 Sep 2014
I need calculation of quick opening closure. Can you help me?

Guest Author: Humberto Ramirez     17 Sep 2014
Can you please send me the file? It will be very useful to me. My e-mail address is hramirez_om@hotmail.com.

Author: Syawal Eqwan    23 Sep 2014Member Level: Bronze   Points : 0
Dear Faraz,
That is good effort. Please sent me the file to syawaleqwan@gmail.com. I really appreciate it. Thank you in advance.

Guest Author: palani     19 Oct 2014

Author: Fatin Nur Haziqah Binti Kamarulzaman    25 Nov 2014Member Level: Bronze   Points : 0
Can you please email me the excel file? My email id is aten.ziqa92@gmail.com.

Author: Tony John    27 Nov 2014Member Level: Gold   Points : 0

Author: Farazdak    12 Dec 2014Member Level: Silver   Points : 1
Thanks, Mr. Tony John. I did email the file to many people as they could not download it from here.

Guest Author: shahbaz     13 Dec 2014

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