Hello.

Is there a rule of thumb for choosing a design temperature when only an operating temperature is provided for analysis? On my current project, both design and operating pressure have been chosen, but only the operating temperature.

I remember hearing some years back that about simply adding 50F, but most of my systems are below 200F and this seems too conservative.

For now, I have used 1.2xOperatingTemperature for my design case. Any suggestions?

Regards,
Dmitriy