The self-preheating burner achieves energy savings by recovering waste heat from flue gas. Specifically, this burner features a counter-flow heat exchanger installed around the burner body, which preheats the combustion air needed for the burner. This method reduces fuel consumption by 20% to 30% compared to burners that do not recover waste heat from flue gas.

Here are the key mechanisms of how the self-preheating burner achieves energy savings:

1. Using the counter-flow heat exchanger to preheat the combustion air The core component of the self-preheating burner is the counter-flow heat exchanger, which uses several concentric tubes to separate the air and flue gas, with the middle tube serving as the heat exchange surface. The entire heat exchanger is made of heat-resistant steel, ensuring stable operation in high-temperature environments. When the high-temperature flue gas produced after fuel combustion passes through the heat exchanger, its heat is transferred to the combustion air about to enter the combustion chamber, thus increasing the temperature of the air.

2. Improving combustion efficiency The preheated combustion air, when mixed with the fuel and sent into the combustion chamber, burns more efficiently. Since the air has been heated to a higher temperature, the ignition point of the fuel is lowered, leading to more complete and stable combustion. This efficient combustion process reduces fuel waste and ensures a more uniform temperature within the furnace, further enhancing heating efficiency.

3. Reducing energy loss By preheating the combustion air, the self-preheating burner minimizes the energy loss caused by the direct emission of high-temperature flue gas. This not only reduces fuel consumption but also minimizes thermal pollution to the environment.

To sum up, the self-preheating burner effectively recovers the waste heat in the flue gas through the built-in counter-flow heat exchanger, which is used to preheat the combustion air, so as to significantly improve the combustion efficiency and reduce the fuel consumption, achieving a good energy saving effect.