The heat transfer mode of gas radiant tube

　　
The gas radiant tube is a commonly used heating device in industrial kilns, and the main heat transfer mode is radiation. The application of gas-fired radiant tube heating devices in industrial kilns can reduce the infrastructure and operating costs of kilns, improve production efficiency and prolong the life of kilns. The combustion atmosphere and combustion products of the gas radiant tube produced by HEXIN do not directly contact the heated workpiece, which greatly improves the product quality and is widely used in the field of metal heat treatment and industrial drying.
Its working principle is: the inlet end of the radiation tube is a burner, the outlet end is connected with the flue, the gas and air are burned in the sealed tube, the flame flow generated by combustion and the generated flue gas flow to the flue, and the energy is radiated to the furnace through the heating radiation tube, and the furnace body and the processed workpieces or materials in the furnace are heated. Some gas radiant tubes are equipped with flue gas waste heat recovery devices, that is, the flue gas heats the cold air after passing through the heat exchanger, and the cold air burns with the fuel.