What type of boiler is a scotch marine boiler?

A scotch marine boiler is classified as an internally fired, self-contained horizontal boiler. This type of boiler is designed with a cylindrical shell that contains fire tubes through which hot gases from combustion pass, transferring heat to the water surrounding these tubes.

The term "internally fired" indicates that the combustion of fuel occurs within the boiler itself, which allows for efficient heat transfer as the hot gases directly interact with the water. Being "self-contained" means that the boiler operates as a complete unit, often needing minimal external support for its operation. The horizontal alignment is characteristic of the scotch marine design, facilitating easier maintenance and operation.

Such boilers are commonly used in marine applications and other industrial settings due to their compact size and efficiency in producing steam. Their design also allows for ease of handling and operation, which is essential in various engineering applications.