What role does a boiler economizer serve?

A boiler economizer is specifically designed to recover waste heat from the flue gases of a boiler. This recovered heat is then used to preheat the feedwater entering the boiler, which improves the overall energy efficiency of the system. By raising the temperature of the feedwater before it enters the boiler, the economizer reduces the energy required to convert water into steam, thus leading to lower fuel consumption and increased efficiency.

This role of the economizer is crucial in optimizing boiler performance and reducing operational costs. It contributes to energy savings while also helping to minimize greenhouse gas emissions, making it an important component in both industrial and commercial settings.

Enhancing fuel quality, improving steam pressure, and increasing the boiler's size do not accurately describe the primary function of a boiler economizer and do not align with its purpose in a heating system.