Rectangular Vessel 1

[NewfieEng]

I need to do some calculations on a rectagular pressure vessel. I don't think that there is anything in ASME Sec 8 Div 1 on rectangular vessels. What would be my best course of action. Really all I need a wall thinkness calc for square vessels. Any suggestions???

 

[jte]

I don't think that there is anything in ASME Sec 8 Div 1 on rectangular vessels.

Newfie-

I'd suggest you read Section VIII Div. 1 Appendix 13. Let us know what you find...

jt

 

[vpl]

Why the heck would you be building a rectangular pressure vessel anyways?!!

Is this a "newfie" joke?

Patricia Lougheed

Please see FAQ731-376 for tips on how to make the best use of the Eng-Tips Forums.

 

[deanc]

I have seen a number of these over the years. Mostly small,double walls with stays.

Besides havn't ya ever seen a "wood" stove?

 

[stanweld]

The headers for fin-fan heat exchangers have been rectabngular for decades and are designed, manufactured and stamped per ASME VIII, Div.1.

 

[djack77494]

If you look at offshore platforms, you'll find a lot of rectangular tanks. There space is at a serious premium, and extreme steps are taken to limit space requirements. Among those steps are the use of rectangular tanks (for atmospheric/low pressure tankage).

 

[JStephen]

I've seen several inquiries on rectangular vessels here, and it seems they tend to be rectangular containers of various kinds, not necessarily proper ASME pressure vessels.

 

[vpl]

Thanks guys, and my apologies NewfieEng. All my experience has been with ASME code vessels which, under the pressures I see in the power industry, need to be circular. I never realized there were applications where someone would build a rectangular pressure vessel.

I have learned something today.

Patricia Lougheed

Please see FAQ731-376 for tips on how to make the best use of the Eng-Tips Forums.

 

[unclesyd]

vpl, it can be done.

We have over 50 rectangular vessels (4'x 8'x 10") in operation designed for 125 psig @ 850F. The internals that act as stiffeners are 4130 castings designed for 2500 psig @ 850F. Some of these vessels are 50 years old with an on stream utilization of better than 99.9%.

We also have 17 jacketed SS vessels where the core is two overlapping circles, the cross section is a figure 8.

All ASME stamped.

 

[jte]

Air cooled heat exchangers are commonly known as fin-fans. This is a case where a trademark has become a universal name kind of like a self adhesive bandage is more commonly known as a band-aid. I don't know how much of the market Hudson owns, but I'd guess its a substantial fraction. They have a pretty good web site

http://www.hudsonproducts.com/industry.html

which indicates that their products are used in power generation, among others. I have a refining background and dealt with them on a regular basis.

jt

 

[NewfieEng]

Thank you JTE that was exactly what I needed. I had overlooked that section when I went looking the first time. I was in too much of a rush. But I have since Pulled out the book (ASME Sec 8 DIV1), made all the calculations and even created a little spreadsheet to do the calcs in the future.
In fact these are calcs on a Air cooled heat exchanger. tHe sections are rectangular and have plugs all down both sides and tubes running through the middle. Not your average pressure vessel.