What role does draft play in a boiler system?

Draft plays a crucial role in the operation of a boiler system primarily by aiding in the combustion process. In a boiler, proper combustion relies on a consistent and optimal supply of air. The draft, which is the difference in pressure that draws air into the combustion chamber, ensures that the necessary air flows to support the burning fuel. Adequate draft facilitates the combustion of fuel at the right temperature, improves efficiency, and minimizes emissions.

When the draft is too low, it can lead to incomplete combustion, resulting in unburned fuel and increased emissions. Conversely, excessive draft can cause too much air to enter the system, which can also affect combustion efficiency and potentially lead to overheating issues.

Understanding the role of draft is essential for maintaining effective boiler operation, ensuring safety, and optimizing fuel utilization.