Which aspect of boiler operation does not benefit from water treatment?

The aspect of boiler operation that does not benefit from water treatment is the increased pressure rating. Water treatment primarily focuses on improving the quality of the water used in the boiler system to prevent issues such as corrosion, scaling, and thermal efficiency losses.

Corrosion prevention is achieved through chemical treatments that neutralize harmful ions and maintain pH levels, protecting boiler materials. Scaling reduction is addressed through techniques that control mineral deposits, which can insulate heat transfer surfaces and hinder efficiency. Thermal efficiency improvement is a direct result of reducing scaling and preventing deposits that can disrupt heat transfer.

However, increasing a boiler's pressure rating is related to the design and safety considerations of the boiler itself, including the materials used and construction methods. It is not directly influenced by water treatment processes. Thus, while proper water treatment enhances the performance and longevity of a boiler, it does not influence the maximum pressure that the boiler can safely handle.