WelshEngineer87
Automotive
- Dec 20, 2017
- 11
Hi all,
I'm currently creating a 1D thermal model for assessing steady state heat transfer across a hollow cylinder with and without thermal insulation on the cylinder. The heat flow path is from internal gas flow through to external surface temperature for the cylinder or the insulation.
The cylinder is inside a sealed enclosure where the enclosure is supplied with airflow of 18m/s.
I have measured during testing the surface temperatures on the surface of the cylinder and the outside of the insulation. There is no measurement of ambient temperature in the box however have access to CFD to calculate ambient temperatures.
To calculate the heat flow rate in the 1D model the ambient temperature in the enclosure is required to determine total thermal resistance. Where should the ambient temperature be recorded from? i.e. how close to the cylinder for calculating heat transfer?
I'm currently creating a 1D thermal model for assessing steady state heat transfer across a hollow cylinder with and without thermal insulation on the cylinder. The heat flow path is from internal gas flow through to external surface temperature for the cylinder or the insulation.
The cylinder is inside a sealed enclosure where the enclosure is supplied with airflow of 18m/s.
I have measured during testing the surface temperatures on the surface of the cylinder and the outside of the insulation. There is no measurement of ambient temperature in the box however have access to CFD to calculate ambient temperatures.
To calculate the heat flow rate in the 1D model the ambient temperature in the enclosure is required to determine total thermal resistance. Where should the ambient temperature be recorded from? i.e. how close to the cylinder for calculating heat transfer?