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

2

Gravity Vertical Flow Line

seawater overboard line

No replies to this topic
Share this topic:
| More

#1 Afshin

Afshin

    Gold Member

  • Members
  • 191 posts

Posted 17 January 2020 - 06:00 AM

Dear Experts,

 

Currently I am checking adequacy of existing seawater overboard pipe due to increase of seawater flowarte. The seawater flowing

by gravity to overboard caisson via a 20 inch GRE pipe.

 

A 10 inch vent line already installed in highest point of overboard pipe which I believe there is a continuous air flow via that vent to inside of the vertical pipe to  prevent vacuum in vertical pipe.

 

Some questions came in my mind as per below:

 

1- Is this pipe should be checked based on single liquid phase or two phase (water + air) criteria?

 

2- In case of two phase flow :

 

  •       How air flowrate can be estimated?
  •       Is this pipe  should be sized based on maximum erosion velocity? If yes, what C-factor should be considered for GRE pipe  in API 14 E formula?

Waiting for your valuable response.


Edited by Afshin, 22 January 2020 - 07:43 PM.





Similar Topics