What is the main function of the feed water in a boiler system?

The main function of feed water in a boiler system is to remove air and non-condensable gases. When water is heated to produce steam, any air that remains in the system can create problems, such as reducing the efficiency of heat transfer and potentially leading to corrosion and other issues. Therefore, the feed water is typically treated to ensure that it is free of air and non-condensable gases before it enters the boiler.

By effectively removing these gases, feed water helps maintain the integrity of the boiler system and ensures optimal steam production. Having oxygen or other gases in the water can lead to oxidation and detrimental effects on the boiler's components, which is why de-aeration or other treatment processes are essential prior to injecting the water into the boiler. This function plays a critical role in the overall performance and maintenance of the boiler system.