Metal temperatures in Double Pipe Heat Exchangers

[kamatr]

Require assistance in finding a straight forward routine to establish the metal temperature in the inner pipe of a double pipe heat exchanger. Outer pipe/jacket has the heating medium (in this case LP steam) and the inner pipe has the medium to be heated (in this case a hydrocarbon gas).

 

[abeltio]

Try Process Heat Transfer by Kern.
That book is "the" landmark in heat transfer calculations. It even has a chapter dedicated to double pipe heat exchangers.
Hope this helps.
a.

 

[TD2K]

The TEMA standards also has a good section on estimating tube wall metal temperatures.

 

[abeltio]

kamatr,
It just hit me, what is the purpose of calculating the tubewall temperature? specifying the material? stress calculations? in that event you should consider the worst case scenario, full steam without cooling on the other side. In fact the tube design temperature is usually taken as the Steam Temperature + an allowance for failure modes (which depend on the installation).
Hth
a.

 

[kamatr]

Just to thank the respondents on suggesting Kern (which I had looked at) and TEMA (which I had forgotten about not having been involved with S&T HE's for quite a while - Section T-4.32 being what I was looking for). Just for information, I was seeking to establish a mean metal temperature of the inner pipe of a steam heated double pipe heat exchanger so that I could evaluate the need for a bellows to accomodate the stress due to thermal expansion.