 Natural circulation boiler

A natural circulation boiler is a type of water-tube boiler in which water circulation is driven by natural convection, as opposed to mechanical means such as pumps. In these boilers, the circulation of water is facilitated by the differences in density between the hot water and the cooler water. ### Key Characteristics: 1. **Natural Circulation Principle**: In a natural circulation boiler, when water is heated in the boiler, it becomes less dense and rises to the steam drum.