What is the working principle of tubular heating?

Another mode of duct heaters is the far infrared electric heating unit. That is, the electric heater in the internal system in the pipeline heater wraps the bottom of the reactor in the pipeline heater and the lower middle portion of the pipeline heater for heating. The far-infrared electric heating device of the pipeline heater has a large heating area of the internal system of the pipeline heater, the temperature rise of the pipeline heater is smooth and fast, the heat release of the pipeline heater is uniform, the temperature control of the pipeline heater is convenient, and the pipeline heater can be used. In the middle and lower sections, the temperature of the tank wall in the pipeline heater is easy to control. The pipeline heater has no side effects on the fuel in the tank, and the carbonization of the material in the pipeline heater is not generated. The pipeline heater runs without noise. , no pollution, long service life of pipeline heaters (more than 30,000 hours), energy saving of pipeline heaters (28% or more).