What are the two main types of boilers?

The two main types of boilers are fire-tube and water-tube boilers. This classification is based on how the hot gases and water interact within the boiler system.

In fire-tube boilers, the hot combustion gases pass through tubes that are surrounded by water. The heat from the gases transfers to the water, which then heats up to create steam or hot water. Fire-tube boilers are generally simpler in design and can be more cost-effective for smaller applications.

Conversely, water-tube boilers have water-filled tubes that are heated by surrounding hot gases. This design allows for higher pressure and higher temperature applications because the water is contained in tubes, providing a more efficient heat exchange. Water-tube boilers are preferred for larger industrial applications due to their ability to generate steam quickly and handle varying loads effectively.

Understanding these two types helps clarify the operational principles and applications of different boilers, making it essential knowledge for anyone working with stationary engineering and boiler systems.