5 replies to this topic

[fallah]

Hello
I'm looking for standards, guidelines how to determine max. mechanical design temperature of blowdown system (pipes, knockout drum). In API 521 I haven't found detailed information if it's possible to take into account autorefrigeration and calculate max. mechanical design temperature of blowdown system as dew point temperature under the pressure occured in blowdown system.

Thanks in advance
Mariusz

As far as i know,in blowdown systems minimum mechanical design temperature would be the main concern because of low temperature nature of such systems.

The maximum mechanical design temperature would be the maximum operating temperature that a given equipment (and associated pipings) may subject to,plus reasonable margin.

[JoeWong]

I do consider that you can take into account the autorefrigeration effect.

[JoeWong]

Thanks Sirs. But if You know any standard, article, guidelines, etc about this subject (taking into account autorefrigeration in calculating max. mechanical design temperature of blowdown system) please inform me.
Thanks in advance

I just thinking if you consider autorefrigerant for low temperature assessment, why not for max. design temperature...