What is the primary function of a boiler in a power engineering system?

The primary function of a boiler in a power engineering system is to generate steam for energy production and process heating. Boilers operate by heating water, typically through the combustion of fuels like natural gas or oil, although they can also utilize electricity or alternative sources.

As water is heated, it converts into steam, which is an essential medium in various applications within power plants and industrial processes. This steam can be directed to turbines to generate electricity or utilized in heating systems to provide thermal energy for manufacturing and other processes. The efficient generation of steam is crucial to the overall performance and output of a power engineering system, making it central to energy production.

Other options such as cooling water or filtering impurities do not directly relate to the primary function of a boiler. While fuel storage is also essential, it is more appropriate to view that as a supportive function rather than the main purpose of a boiler. The boiler’s role in steam generation distinctly highlights why it is of paramount importance in the field of power engineering.