Optimization of Temperature Difference Field Synergy of Radiator Based on Matrix Fan

Abstract:

Based on the cooling module of a sedan, five different matrix fan configurations were designed, and a numerical analysis of the effect of the different configurations and the nonuniformity of cooling air mass flow on the heat rejection performance was processed. The results indicate that the matrix fan can increase the synergy number of the temperature difference between the cold and hot medium in radiator, with which the heat dissipation has a positive correlation. As the cooling air flow through the radiator becomes nonuniformity, the heat rejection of radiator decreases. And with the increase of rotational speed ratio, the decreasing amplitude gradually descends. Moreover, the changes of cooling air mass flow in the different regions have different weight factors on the heat rejection performance of radiator, i.e., when the cooling air mass flow in the low temperature region is bigger, correspondingly the decreasing amplitude of the heat dissipation and synergy number rises.