Heat loss in uninsulated pipe

[mmonti0]

Good morning,

I have a pipe carrying steam at 480°C and around 5 barg. The pipe is 1/2" alloy steel, while the maximum flowrate inside the pipe is 300 kg/h. Such line is uninsulated, and placed in an environment where there are defined ambient temperature and wind.

I would like to know if there is a code or another method to determine the external heat coefficient, in order to calculate the expected heat loss (W/linear meter).

Thank you,

Matteo

 

[TimSchrader2]

Hello
Did this years ago. The MFGS that make the thermal insulations should have the data.

 

[IRstuff]

The convection coefficient depends on ambient temperature, wind speed, etc.

Is the pipe accessible to people? That would seem to me to be a bigger issue, since that's well above contact burn territory.

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[chicopee]

Mechanical engineering handbooks will have that information. I know for a fact that Kent ME handbook "Power" edition has that information. Also check the Perry chemical engineering handbook. Heat transfer handbooks will also have details about the subject.

 

[Jacc]

There are so many posts on this subforum about topics completely outside the field of hydraulic fluid power, I think the name of this subforum should be changed.

The term "Fluid Power" is correct and a good description of the topic but it's not that widely used in the field, it seems to be more used in the academic world.

The term "Hydraulics" is very well known in the field but unfortunately it is also well established in civil engineering, most likely using the name "Hydraulics" would generate lots of posts from people building water channels and stuff...


Maybe the term "Hydraulics & Pneumatics" would work well. Or maybe a combination, "Fluid Power, Hydraulics & Pneumatics".

 

[IRstuff]

Not sure how that would help. There are already two, more obvious forums, for the OP to have posted this question, but they should only post in one forum, as duplicate posting is not encouraged.

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[hydtools]

Heat generation and transfer should be part of the design consideration of a fluid power system. How else would you know how to manage the temperature of a system and possible ambient effect?

Ted

 

[Jacc]

Is the OP question about fluid power?