What is the primary function of an air preheater?

The primary function of an air preheater is to increase combustion efficiency by preheating the intake air. When air is preheated before it enters the combustion chamber of a boiler, it raises the temperature of the air and allows for more efficient combustion of fuel. This leads to a more thorough burning process, which maximizes energy output and reduces fuel consumption.

Preheated air helps in achieving higher combustion temperatures, which can improve the overall efficiency of the system. Furthermore, by using waste heat from the flue gases to warm the incoming air, air preheaters contribute to energy conservation measures in power generation processes, leading to lower operational costs and reduced emissions.

Additionally, preheating the intake air reduces the formation of condensation and minimizes the potential for corrosion in the combustion system, enhancing the longevity and reliability of the equipment.