Temperature calculation for combustion chamber

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SUMMARY

The discussion focuses on calculating the temperature near the roof of a combustion chamber using a thermocouple positioned at the nine o'clock location, 49 mm from the hot face material. Joanna highlights convection as the primary heat transfer mechanism to consider for this calculation. However, the lack of detailed information and the potential inaccuracy of the thermocouple reading, which is noted to be 1623, raises concerns about the reliability of the temperature difference measurement. The conversation emphasizes the need for more context regarding heat sources and sinks to proceed effectively.

PREREQUISITES
  • Understanding of thermocouple operation and accuracy
  • Knowledge of heat transfer mechanisms, particularly convection
  • Familiarity with combustion chamber design and thermal dynamics
  • Ability to interpret cross-sectional diagrams of thermal systems
NEXT STEPS
  • Research methods for improving thermocouple accuracy in high-temperature environments
  • Study convection heat transfer calculations in combustion chambers
  • Explore thermal modeling software for simulating temperature distributions
  • Investigate the impact of heat sources and sinks on temperature measurements
USEFUL FOR

Engineers, thermal analysts, and researchers involved in combustion chamber design and temperature measurement optimization will benefit from this discussion.

psiq222
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Hi!

I was wondering if it is possible to calculate the temperature near the roof of combustion chamber based on thermocouple reading which is located at nine o'clock position. Tip of measuring device is located 49 mm from the surface of hot face material. Please find the picture attached.

Does anyone can advise me on how to proceed with the calculation? I assume that convection is the main heat transfer mechanism which should be considered here.

Br
Joanna
 

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Science news on Phys.org
Hello, and :welcome: !

No replies so far, which doesn't surprise me: post and picture provide far too little information.

What is it we are looking at?
Where are heat sources and sinks?

When I look at the picture ( a cross section at some point somewhere?), the first thing that comes to mind is: how accurate can this 1623 be ? And that the inaccuracy of that measurement may well be a lot bigger than the temperature difference between side and roof.

Sorry to come up with such a pessimistic reply :confused:

##\ ##
 

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