What is a primary function of a deaerator in a boiler system?

A deaerator plays a crucial role in a boiler system by removing dissolved gases, specifically oxygen and carbon dioxide, from the feedwater. These gases can lead to corrosion in the boiler and piping systems, which can significantly affect their longevity and efficiency. By utilizing a deaerator, the water is heated while allowing these undesirable gases to escape, thus improving the overall quality of the feedwater that is sent into the boiler. This process is essential because even small amounts of oxygen can cause significant damage over time due to corrosion. Therefore, maintaining low levels of dissolved gases helps in maximizing the life of the boiler and enhancing operational efficiency.