Experimental Research on the Heat Transfer Characteristics on Train Body of Bullet Train

Abstract

In order to know the characteristic of heat transfer performance on train body, the DRH-300 instrument was used to investigate equivalent thermal conductivity coefficient of hollow-structure aluminum of bullet train “Fuxing”. It was analyzed that the same hollow-structure aluminium was under different temperature difference; while the equivalent thermal conductivity coefficient with different position of train body was under same temperature difference. The experimental results showed that the equivalent thermal conductivity coefficient of the same hollow-structure aluminum was the same under different temperature difference; the impact of the equivalent thermal conductivity coefficient on different hollow-structure aluminum was different under the same temperature difference. It showed that heat convection in the hollow was tiny, compared with heat conduction. On the practical application, the reasonable structure was selected in accordance with practical needs, so as to reduce heat transfer and energy consumption of train.