A detailed analysis of the thermal resistance of a plate is given. The plate sits between a heat source and an extensive heat sink. The thermal resistance strongly depends on the overlap of the plate around the heat source. Another important factor is the coefficient of heat transfer between plate and heat sink (ã). The goal of this article is to find an optimal geometry of the plate so that the sum of thermal resistance of conduction and thermal transfer resistance to the heat sink becomes a minimum.
The approach is a practical one where results of measurements are generalized with help of the finite element method (FEM). An easy-to-use method for finding ã is presented. ã has a strong influence on the optimal thickness of the plate which makes the thermal resistance minimal for given lateral expansions. The geometry of such a stack can only be optimalized for one specific cooling condition.
| Filename: | EPE Journal - 10-2 - 1 - Paper Fasching |
| Filesize: | 773.5 KB |
