Re: Natural Gas piping design

From: <zope_tushar@fwc.com>
Date: Fri May 02 2003 - 23:43:00 EDT

Sudir,

The best solution to all your problems is.....leave the job....join the chemical engg college and come back to present job.......

Best regards.

sudir <smahajan@bses.co.in>
05/02/2003 10:01 PM
Please respond to PipingDesign

         To:     PipingDesign yahoo group <PipingDesign@yahoogroups.com>
         cc:
         Subject:        [PipingDesign] Natural Gas piping design

Hi friends,
I am a new member in this group.
I request everybody to accept me as a member of this group. I am having some probs.

1. How to calculate the following things for given volumetric flow of gas:
   1. Pipe dia.
   2. Pipe thickness/ pipe schedule no.
   3. Pressure drop/kilometer of pipe length.
2. For most economical transmission of gas through pipe at what pressure the gas is to be transmitted? On what factors it depends, please elucidate.
3. What is the maximum gas velocity allowed in the pipe?
4. What are limiting factors for deciding the above things?
5. How to calculate the compressor power required for boosting the pressure of the gas?
6. Due to flow of gas through pipe there may be increase in temperature of the gas; how to calculate the temperature rise due to friction?

Does it have any safety related aspects? If yes then how to counteract this?

7. What is the value of the natural gas viscosity? 8. I have tried two formulas

1. Waymouth &
2. Fanning's formula Even though both are applicable for the gas flow through pipe but the pressure drop calculated by these formulas gives different values. Please clarify.

For e.g.     Volume flow  = 40 mmscmd

  Inlet pressure  =  10 bar
  Inlet temperature =  30 oC
  Pipe length  =  500 km

Your answers are highly appreciated

Regards
Sudhir

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[Non-text portions of this message have been removed] Received on Fri May 02 23:43:00 2003