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

Gas Pipe Sizing Formula

Gas Pipe Sizing Formula

(OP)

Hi,

I'm chasing a couple of things to assist with design of a gas service for a high rise apartment building.

a) The most suitable formula to use in sizing the pipework. System would be 100 mm and supply pressures 2.75 kPa thru to 70 kPa.
b) As I understand it equivalent lengths are typically used for fittings, is there a metric source I could refer to with this data?
c) Some information on diversities for residential gas supplies, what sort of percentage or method to determine diversity is typically used?

I'm dealing in metric.

One formula I have been sent is as follows for calculating outlet pressure:

P = ( Absolute Inlet Pressure^2 - ( (m3/hr / Constant)^2 * Specific Gravity * Length) / Diameter ^ 5) ) )^0.5

Anyone able to confirm which formula it is and if suitable?

Thanks in advance

K

RE: Gas Pipe Sizing Formula

(OP)

Thank you for your assistance.

For reference should anyone come across this post, with regards to diversity, I found two references.

a) International Mechanical Code 1988
http://publicecodes.cyberregs.com/icod/imc/1998/ic...

and

b) ASPE Data Book Volume 2, Figure 7-5 Typical Diversity Curve for Gas Supply to High Rise Apartments

Cheers

K

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