What is the primary function of a water wall?

The primary function of a water wall is to absorb heat that would otherwise be lost. In a boiler system, water walls are integral components typically constructed from water-filled tubes that line the combustion chamber. Their design allows them to capture and retain heat generated during the combustion of fuel. This heat is then transferred to the water within the tubes, contributing significantly to the overall efficiency of the boiler by facilitating the process of heating the water to produce steam. This function not only maximizes energy use but also helps in maintaining a more stable operating temperature within the boiler, ultimately leading to better performance and reduced fuel consumption.