What is the effect of sodium bicarbonate in boiler water?

Sodium bicarbonate, when added to boiler water, serves primarily as a method to manage pH levels and aid in alkalinity control. When heated, it decomposes into sodium carbonate, which increases the concentration of sodium hydroxide in the water system. Sodium hydroxide is a strong base that helps to maintain the desired alkaline conditions in the boiler. This is crucial, as a proper pH level prevents corrosion and facilitates the removal of dissolved solids.

The function of sodium bicarbonate in the boiler system is thus tied to its ability to promote the formation of sodium hydroxide, which stabilizes the water chemistry within the boiler. This contributes to the overall efficiency and longevity of the boiler equipment by mitigating issues such as corrosion and scale formation.