Jump to content



Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog

0

Tank Depressurisation Through Vent Pipe Calculation

fanno flow depressurisation choked flow venting

2 replies to this topic
Share this topic:
| More

#1 lambonumber5

lambonumber5

    Brand New Member

  • Members
  • 4 posts

Posted 08 April 2021 - 05:50 AM

Hi Guys, 

I have been trying to write a model to calculate the depressurisation of hydrogen out of a tank through a vent line. I've used the fanno flow calculations as the tanks are at about 350bar so the flow will be choked. The results are in the expected ballpark but no one in my company can validate the results. I'd really appreciate it if someone with more knowledge and experience in this field would check what I've done.

Much appreciated 

Dan

Attached File  Depresurization calculator.xlsm   498.65KB   87 downloads



#2 Ali Akhoundi

Ali Akhoundi

    Brand New Member

  • Members
  • 4 posts

Posted 04 September 2022 - 05:58 AM

Have you tried to examine it by Hysys blowdown tool?



#3 breizh

breizh

    Gold Member

  • Admin
  • 6,292 posts

Posted 04 September 2022 - 06:59 AM

Hi,

You may want to take a look at these documents to support your query with this approximation. I don't have access to software.

Note:

your calculation should stop when the pressure reaches 1 bar 

Good luck

Breizh 






Similar Topics