Which type of burner is most commonly used in induced draft furnaces?

The most commonly used burner in induced draft furnaces is the inshot burner. This type of burner is designed to provide optimal combustion efficiency and is well-suited for the operational characteristics of induced draft systems. Inshot burners draw air into the combustion process through a venturi effect, which promotes better mixing of air and gas, resulting in a more complete and efficient burn.

Inshot burners are particularly advantageous in induced draft applications because they can operate effectively across a wide range of load conditions. This flexibility is crucial in maintaining system performance and ensuring the furnace operates smoothly under varying heating demands. Additionally, the compact design of inshot burners allows for effective installation and maintenance within the furnace structure.

Burners like single port, ribbon, and potted have distinct applications and advantages, but they are not as prevalent in induced draft furnaces as inshot burners. Each type of burner has its specific design and operational characteristics tailored to particular heating needs and equipment configurations, further illustrating why inshot burners are typically the preferred choice in this context.