The dynamic model of resistive type molten salt heater was established by Dymola software

and the transient characteristics and internal temperature field of resistive type molten salt heater under electrical load and molten salt flow disturbance and different arrangement modes were studied on the basis of verifying the effectiveness of the model. The results show that the influence of large disturbance of electric load and molten salt flow on the dynamic characteristics of resistance type molten salt heater tends to be the same

and reaches its limit condition at 110 s and 105 s respectively. However

the occurrence of the limit condition can be greatly delayed when the two disturbances are coordinated. Multiple electric heaters arranged in series or in parallel can slow down the change of molten salt temperature

but increase the system cost. The research conclusion can provide reference for the design

control and debugging of resistance molten salt heater.