- #1
DDesulgon
- 25
- 6
I'm doing some experiments on heat insulation with a model house (made of styrofoam, 3cm), heated with a 25W light bulb.
In some papers I have read that it's important for the box to be two-layered, with only the outer layer being styrofoam and the thin inner layer consisting of material with a lower thermal resistance.
Apparently, the reason for this is that the inner layer thus provides a heat reservoir with homogeneous temperature. So it's an homogenous body, and the heat flows over a thermal resistance into the environment, in radial direction.
Unfortunately, I don't quite understand this explanation. Why is the temperature only homogeneous with the additional layer? Could someone explain, why the inner layer with the lower thermal resistance is needed?
Thanks so much in advance!
In some papers I have read that it's important for the box to be two-layered, with only the outer layer being styrofoam and the thin inner layer consisting of material with a lower thermal resistance.
Apparently, the reason for this is that the inner layer thus provides a heat reservoir with homogeneous temperature. So it's an homogenous body, and the heat flows over a thermal resistance into the environment, in radial direction.
Unfortunately, I don't quite understand this explanation. Why is the temperature only homogeneous with the additional layer? Could someone explain, why the inner layer with the lower thermal resistance is needed?
Thanks so much in advance!