Application of triz algorithm and taguchi analysis for optimum heat sink design in electric vehicles

Abstract

With the developing technology, the power density of electronic devices is increasing in direct proportion. Therefore, this situation causes the development of cooling technology. This study presents a quantitative evaluation of how TRIZ (Innovative problem solving theory) method improves results in cooler design used in cooling the electronic systems of electric vehicles. After the problem was defined, innovative principles were applied with the TRIZ contradiction matrix. Geometric parameters are taken as a basis, especially in order not to be a costly solution. For an innovative solution, the effects of duct inlet length, number of fins and fin type parameters on cooling and pressure loss were investigated in Taguchi analysis. The results of the in-channel flow problem were carried out numerically in the Comsol program. The order of importance of the parameters affecting the radiated heat and pressure loss values for the cooling process was obtained as the number of fins > the effect of the cooler type > the inlet distance distance. It has been observed that the effect rate of the number of fins on the maximum heat dissipation and pressure loss is quite high (83.11%-87.27%) compared to the other two parameters. In terms of heat dissipation, with TRIZ analysis, an improvement of 6.6% was achieved in the final design compared to the current situation, and an improvement of 14.14% in terms of pressure loss. In order to validation the numerical method used in the study, a study in the literature was discussed. The results were found to be compatible with each other.