What describes an internally fired boiler?

An internally fired boiler is characterized by having the grate and combustion chamber located within the boiler shell itself. This design allows for more efficient heating of the water or steam, as the combustion gases produced from burning fuel are directed into the boiler’s water space, enhancing heat transfer.

The enclosure of the grate and combustion chamber leads to better control over the combustion process, improved safety, and often, better energy efficiency. By having these components inside the boiler shell, the boiler can maintain optimal operating conditions, which is crucial for efficient performance and safety.

Understanding this configuration helps in recognizing how an internally fired boiler functions compared to other types, which may have components arranged differently, leading to distinct operational characteristics.