What defines a power boiler?

A power boiler is defined primarily by its capability to operate under high-pressure conditions, specifically designed for the generation of hot water or steam used in power generation processes. When considering the characteristics of power boilers, they are typically engineered to withstand high pressures and temperatures, which makes them suitable for utility applications and steam generation in power plants.

The key aspect of a power boiler lies in its construction, allowing it to produce heat energy effectively while maintaining structural integrity under elevated pressures. This includes not only generating steam but also providing hot water which can be utilized for heating or industrial processes.

Understanding the role of a power boiler in a broader context, it is distinct from other boiler types, such as those used for low-temperature applications or those that only produce steam without the capability for high-pressure operation. This makes the option that emphasizes the construction for hot water and high pressure the most accurate representation of what defines a power boiler.