Optimización de la Eficiencia Térmica de un Motor Robinson Aplicando el Modelo Senft-Schmidt-Petrescu

The results of the optimization of the thermal efficiency of a Robinson engine applying the Senft-PetrescuSchmidt model are presented. This is based on the coupling of the Senft-Schmidt and the Petrescu models, used for the calculation of power in Stirling cycle engines. The proposed model involves both thermodynamic and geometric parameters and allows estimating the overall pressure losses by friction and by flow throttling. Based on data from a prototype of a Robinson engine of about 2 W of power, a theoretical analysis of its main parameters and the optimization of thermal efficiency, based on the minimum entropy generation, were performed. After the optimization was done, the thermal efficiency of the engine increased to more than the double. It is concluded that the proposed Senft-Schmidt-Petrescu model may be useful in the analysis and redesign of Robinson engines.