What main part of the boiler system is responsible for expelling waste gases?

The flue gas system is primarily responsible for expelling waste gases from the boiler system. This system includes components like flue ducts or chimneys that channel the combustion gases away from the boiler and into the atmosphere. The process ensures that harmful gases, which are byproducts of combustion, do not accumulate within the boiler area, thus promoting safety and operational efficiency.

The functioning of a boiler relies on effective combustion, which produces flue gases. The flue gas system is crucial as it handles the removal of these gases, maintaining optimal combustion conditions and ensuring that the boiler operates properly. By expelling waste gases, the flue gas system also aids in the overall efficiency of the boiler system, as excess pressure and temperature caused by trapped gases could negatively impact boiler performance and safety.

The other components, such as the feedwater system and the steam system, serve different purposes. The feedwater system is involved in supplying water to the boiler, while the steam system is responsible for delivering steam generated by the boiler to its intended applications. The combustion chamber, on the other hand, is where the fuel is burned to generate heat but does not handle the removal of waste gases itself. Thus, the flue gas system stands out as the key component that actively