Hello, I'm looking for valuable suggestions and critique of a thought process.
Consider that you're sending a gas through a metal passageway at a certain temperature (T1, deg F) and flow (m1, kg/min). Consider also that this metallic enclosure has been validated in testing to a combination of high temperature close to material limit (Tlim) and high exhaust flow (m_lim) to ensure it doesn't crack for a certain number of hours.
Now consider this scenario - T1 approaches Tlim or exceeds it by a bit (T>Tlim) but flow is quite low (m1<<m_lim). How can we compare the impact of this flow and temperature to the combination of temperature and flow it was validated to?
I'm looking for a quick and rational, back-of-the-envelope approach.
I was thinking of introducing a factor, called "thermal mass flow" which I define as H = Temperature x Flow. Using this factor, I can say that the H value associated with the new scenario is not as high was what was validated in testing, hence the new combination of temperature and flow is not a concern from a thermal fatigue standpoint. Does this approach make sense and what are its pitfalls? Thanks a lot.
"Thermal Mass Flow" Usage
Re: "Thermal Mass Flow" Usage
