Simulation of Hot Spot Temperature Rise of Dry Bridge Reactor Based on Highly Conductive Epoxy Composites

In this paper, based on the theory of multi-physical field coupling, the coupled calculation model of fluid-temperature field is established. The data of dry reactor temperature field in normal operation are calculated by means of finite element modeling, and the transient temperature change law of reactor in normal operation is obtained. On this basis, the microcosmic COMSOL simulation model of the encapsulation material is established and the thermal conductivity of the composite material is calculated. Simulation models of epoxy reactors with different thermal conductivity are established to analyze the influence of thermal conductivity on hot spot temperature rise of dry bridge arm reactors. The results show that there are obvious differences in temperature rise of hot spots between different thermal conductivity. Compared with conventional epoxy materials, the temperature of hot spots of high thermal conductivity materials is reduced by 9.5 °C, which can achieve the goal of reducing the temperature rise of hot spots by 5 K.