Experimental Validation of Channeled Wall Passive Cooling Enhancement Available to Purchase

Passive cooling enhancement with least additional mass of the material on the external wall can be a method for least energy thermal management for the consumer electronics. Previously, the channeled wall enhancement was found to have potentially four fold performance compare to the single wall in the analysis work, in which the enhancement factor with optimum shape with appropriate thermal conductivity of the material was presented. This method is assumed promising to help the energy efficient and quieter thermal design without sacrificing the valuable flat cosmetic surface of equipment. In this paper, flow regime in a channel composite wall is observed experimentally with PIV method as well as thermal resistance of the wall is observed in the same apparatus. These observation results are discussed with numerical analysis. The discussion is summarized with cooling enhancement factor based on the allowable temperature with comparing to the single wall. The result provides the strong evidence for the optimization on proposed analytic models.