What is one function of the heat transfer surfaces in a boiler?

The heat transfer surfaces in a boiler play a crucial role in the process of generating steam by absorbing heat and converting water into steam. These surfaces are specifically designed to maximize contact with the combustion gases, allowing for efficient heat transfer. As the flue gases pass over the heat transfer surfaces, the thermal energy from the gases is transferred to the water in the boiler. This energy absorption raises the temperature of the water, eventually leading to steam production.

In this context, it is essential that the heat transfer surfaces are constructed from materials capable of withstanding high temperatures and pressures, which reinforces their functionality in not only absorbing heat but doing so while maintaining structural integrity over time. This highlights the primary purpose of these surfaces within a boiler system. The effectiveness of this heat absorption is critical to achieving the desired efficiency and output in steam generation.