Research on Application Status of Water-cooled Radiator of Rail Transit

A variety of different structures of water-cooled radiators used in rail transportation were tested and compared. The effects of different types of flow channels on the flow resistance and heat dissipation performance of radiators were compared, and the heat dissipation characteristics of typical flow channels commonly used in rail transportation were obtained. The research results showed that the flow resistance can be effectively reduced by reducing the length of the flow channel and the reasonable setting of the spacing and the arrangement of the grooves; the cylindrical flow channel and the welded fintype flow channel can effectively increase the turbulence and signi fi cantly improve the heat dissipation effect. The thermal resistance and flow resistance of the welded fin type flow channel are relatively small, and the cost is low, which is more advantageous when the heat dissipation requirement of high heat flux density is required.