In principle, a coil tube heating boiler is classified as which type of boiler?

A coil tube heating boiler is classified as a watertube boiler because of its design and operational principles. In a watertube boiler, water circulates inside tubes that are heated externally by the combustion gases. This type of boiler is known for its ability to produce steam quickly and efficiently.

In the case of a coil tube boiler, the water is contained within coils, which are also encased in a combustion chamber. As hot gases flow around these coils, the water inside absorbs heat and converts to steam. This design allows for a high surface area relative to volume, improving heat transfer efficiency and responsiveness to load changes.

Moreover, watertube boilers typically have higher pressure capabilities compared to firetube boilers, making them suitable for high-demand industrial applications. The structure of the coil tube boiler enables it to handle fluctuating steam loads effectively, enhancing operational flexibility.