An air preheater is a boiler component commonly used to absorb and transfer heat from flue gases within the boiler, thereby enhancing the overall efficiency of the power system.
Air preheaters are typically composed of a set of plate or tubular heat transfer elements, which possess heat transfer capabilities and can absorb and transfer heat from flue gases. By transferring the heat from the flue gases to the cold air entering the boiler, air preheaters achieve preheating of the air, reduce heat loss, and improve the system's thermal efficiency.
The design of an air preheater must consider factors such as the boiler's structure, dimensions, and the temperature and flow of flue gas, as well as the material's corrosion and high-temperature resistance. The manufacturing and installation of the air preheater must also strictly adhere to relevant regulations and standards to ensure safe and reliable operation.
In summary, the air preheater is an essential component of the boiler, serving to absorb and transfer heat from the flue gases within the boiler, thereby enhancing the overall efficiency of the power system.