this is my first post here. I hope I do and format everything correctly.
I was given a spreadsheet which was automatically created and filled by a Cone Calorimeter. The sheet contains the following columns:
- time [s], every five seconds the following values were noted
- heat flux [W/m²]
- surface temperature [°C]
- back side temperature [°C]
- some other values which I think are not relevant, including the temperature of the heater, etc.
I put a short excerpt at the end of my question to make it clear.
The tested sample
- constant cross section: 0,157 m x 0,164 m
- Area: A = 0,025748 m²
- 0,0065 m thickness
- homogeneous material
- density: 1004,768107 kg/m³
was heated from one side (surface). The edges are isolated so that no heat can escape, thermal conduction only in direction of the thickness. You could imagine a slice of bread which is roasted from one side.
Is it possible to determine the thermal conductivity of that sample with only the described data? And if so, how?
I tried my best juggling equations but just can't finde a viable solution.
|time [s] | heat flux [W/m²] | surface [°C] | back side [°C] |
| 0 | 40000 | 22 | 22 |
| 5 | 40000 | 28 | 23 |
| 10 | 40000 | 70 | 25 |
| 75 | 40000 | 283,647036| 94,8174358 |
| 375 | 40000 | 480 | 456 |