What do Force Draft Blowers supply to the furnace?

Force draft blowers are specifically designed to supply combustion air to the furnace. This is a critical function because combustion air is necessary for the proper burning of fuel within the furnace. By providing an adequate and controlled volume of air, these blowers ensure that the combustion process is efficient, which maximizes heat output and minimizes the production of byproducts like unburned fuel or excess emissions.

The combustion air provided by the force draft blowers is typically preheated in various systems to enhance the efficiency of the combustion process. This is important not only for operational efficiency but also for safety, as it ensures that there is sufficient oxygen for the complete combustion of the fuel used in the furnace.

In this context, while cool air, fuel, and steam are important in their own right within engineering systems, they do not fulfill the role played by force draft blowers in supplying combustion air, which is the core function of these systems in relation to furnace operations.