Natural gas pipe temperature

[lola.furtado]

Hi guys! I'm a student working on a class proyect and i have two questions:

I have to design a gas pipe. ¿Should i use a maximum temperature or a minum one? ¿Why?

Sorry if it's the wrong forum!
Please help me, thank you!!

 

[akpipelineengr]

What kind of gas? What kind of pipe? Do you have a design code? How long is the pipe?

Design temperature is important, but we're going to need a lot more detail from you.

 

[rb1957]

you'll probably need to consider both ... why ? (we can tell you, but you'll learn better if you discover it for yourself).

 

[Snickster]

You will need to consider both for different design reasons. If you are looking at piping stress then you will need to consider the maximum and minimum temperatures of operation of a piping system to determine the thermal expansion stress range. If you are looking at the maximum velocity in the pipe of 60 ft/sec based on noise then the velocity is maximum at the highest temperature, and pressure drop is maximum also at highest velocity. If you are looking at heat transfer and loss of heat in the pipe then the pipe will lose most heat when temperature of fluid versus ambient temperature has maximum differential. Depends on what facet of the design you are looking at.

 

[pierreick]

Hi,
If you need to perform calculation:

CheCalc ‐ Fluid Flow

Calculation for pressure losses in pipes and fittings for a variety of fluid flows.

checalc.com

Pierre