What is the primary role of the combustion gases in the functioning of a watertube boiler?

The primary role of the combustion gases in the functioning of a watertube boiler is to heat the water inside the tubes. In a watertube boiler, water circulates through tubes that are heated by the combustion gases produced from burning fuel. The gases transfer their heat to the water in the tubes, raising its temperature and causing it to convert into steam, which can then be used for various applications, including heating and power generation.

This process relies on effective heat transfer from the combustion gases to the water, making it essential for the boiler's efficiency and overall performance. The design of watertube boilers allows for greater control over the heating process and can accommodate high pressures and temperatures, making them suitable for various industrial uses. The role of combustion gases in efficiently heating the water is thus fundamental to the functioning of the watertube boiler system.