Optimisation and Thermal Control of a Multi-Layered Structure for Space Electronic Devices and Thermal Shielding of Re-entry vehicles

All electronicdevices, due to Jouleeffect, present heatdissipation, when theyare electrically fed. The heat overstocking produces efficiency and performances reduction. On account of this thethermal control is mandatory.On small electronic equipments, thedifficulty or impossibility of using a cooling fluid for the free or forced convection heat dissipation imposes the presence of cooling systems based on another kind of functioning principle such as the conduction. In this paper the thermal control, via pyroelectric materials, is presented. Furthermore, anoptimisation of geometric, thermal and mechanical parameters, is investigated.. Theoptimisation process is performed by a hybrid approach where a geneticalgorithm (GA) is used coupled with a local search procedure, inorder to provide an appropriate balance between exploration and exploitation of the search space.