What is primary air supply?

Primary air supply refers to the initial flow of air introduced into a combustion system, such as a furnace or boiler, to support the combustion of fuel. This air is essential for maintaining the proper fuel-to-air ratio, ensuring efficient and complete combustion. In many systems, primary air is mixed with the fuel before ignition, contributing to the overall combustion process and affecting emissions and energy efficiency. Proper management of primary air supply is crucial for optimal performance and environmental compliance.