Thermal Expansion Problems Heat vrs Cold

[Lovison]

Do you address piping configurations different for
hot applications versus cold.

Let's say you have one end of the spectrum where the
temperature is +500 Deg. F and on the other you have
-500 Deg. F. What do you do differently to prevent
moments from taking place? Wayne E. Lovison
service-parts@naglepumps.com

 

[JohnWegkamp]

when the difference between operating temp. and installation temp. is large, the use of expansion joints may be neccesary.

 

[KernOily]

Isn't -500° F less than absolute zero? Anyway...

No, as far as I know, cold and hot are addressed in the same manner. The temperature difference is all that matters, as long as you stay above the Code-specified minimum metal design temperature which for example, for A106B is -20° F (I think). The temperature difference is used to calculate the thermal reactions on the pump flanges.

Thermal loads may be the least of your worries. Don't forget about deadload, seismic, and pressure thrust... Thanks!
Pete
P. J. (Pete) Chandler, PE
Principal Engineer
Mechanical, Piping, Thermal, Hydraulics
Processes Unlimited International, Inc.
Bakersfield, California USA
pjchandl@prou.com

 

[Lovison]

-469 is the lowest (absolute zero) I just
got carried away and picked a number
forgive me for my error.

Thanks for your help Wayne E. Lovison
service-parts@naglepumps.com

 

[KernOily]

Just kidding on the absolute zero thing. It was only a little Thursday afternoon humor, right before dinner, a low blood sugar kinda thing. ;-) Any more questions, just ask! Thanks!
Pete
P. J. (Pete) Chandler, PE
Principal Engineer
Mechanical, Piping, Thermal, Hydraulics
Processes Unlimited International, Inc.
Bakersfield, California USA
pjchandl@prou.com