What is an economizer in a boiler?

An economizer in a boiler is a vital component designed to enhance overall energy efficiency by capturing waste heat from the flue gases that exit the boiler. This recovered heat is used to preheat the feedwater before it enters the boiler system. By raising the temperature of the feedwater, the economizer reduces the amount of fuel needed to heat the water to steam-generating temperatures, thereby improving the boiler's efficiency and reducing fuel consumption.

Incorporating an economizer into the boiler system not only helps in lowering operational costs but also contributes to reducing greenhouse gas emissions. By utilizing the energy that would otherwise be lost with the flue gases, the economizer effectively optimizes the boiler's performance and ensures a more sustainable operation.