INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Transfer pump sizing

Transfer pump sizing

(OP)
Hello everybody
In a new piping system here in my school , they make a transfer pump for the generator between a bulk tank and a daily tank , but the problem is that the pump is not pumping , It's pumping only in manual mode using handle ,
I want to check if the pump is sized perfectly for this system , And I don’t really know from where to start
Any example of transfer pump sizing would very helpful

RE: Transfer pump sizing

So what is the automated mode of transfer? - is it an air operated motor?
If so, do you have the right air supply pressure on the PCV to this pump for this head of say 3m

RE: Transfer pump sizing

The transfer pump not pumping enough, or pumping too much, is a sizing problem. Not pumping at all is a different problem, completely unrelated to the pump capacity.

You didn't finish your diagram, e.g. you didn't label the tanks, so we can't tell if the pump is installed backwards. You also didn't show how the handpump is arranged, where the tank vents and drains are located, and you didn't show the stop valves that enable you to service the transfer pump.

See if you can produce or find a more complete diagram, and perhaps provide some illuminative photographs.

Mike Halloran
Pembroke Pines, FL, USA

RE: Transfer pump sizing

It's also possible that the plumbing can be, and is, set up so that the pump pulls fuel from a tank, pushes it through a filter and returns it to the same tank, a process called 'polishing', which is sort of a response to the generally dirty nature of Diesel as delivered.

Do you understand how the fuel system is _supposed_to_ work?

Mike Halloran
Pembroke Pines, FL, USA

RE: Transfer pump sizing

(OP)
This fuel system is as fellow :
The outlet of the bulk tank connected to the inlet of the pump , then the outlet of the pump to the inlet of the day tank,
when the pump start , the fuel reach the pump but doesn’t go all the way to the day tank, if the pump is off there a handle to pump manually and it does pump it to the daily tank, there is no filter in both tanks.
I'm not really familiar about how fuel systems works , but since there was no design for this fuel system I think the pump is undersized.
I will get more details and I will draw a more detailed diagram
Thank you so much for your time.

RE: Transfer pump sizing

You've read the manufacturer's operating manual for the transfer pump and how to set up the air supply to the air motor / toggle the pump from manual hand crank mode into air motor mode operation?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close