What could indicate increased consumption in a boiler due to fouling?

What could indicate increased consumption in a boiler due to fouling?

• A. Abnormal vibration
• B. Low pressure
• C. High flue gas temperature
• D. Increased water level

Answer: (C)

High flue gas temperature is a clear indicator of increased consumption in a boiler due to fouling. When fouling occurs, it typically means that there is an accumulation of deposits on the heat transfer surfaces within the boiler. This buildup acts as an insulating barrier, preventing efficient heat transfer. As a result, the combustion gases must reach a higher temperature to achieve the necessary heat exchange for producing steam or hot water. Consequently, a higher flue gas temperature suggests that more fuel is being burned to generate the required heat, leading to increased fuel consumption. Monitoring flue gas temperatures is a critical part of boiler maintenance, as significant deviations can signal issues like fouling that need to be addressed to maintain operational efficiency.

High flue gas temperature is a clear indicator of increased consumption in a boiler due to fouling. When fouling occurs, it typically means that there is an accumulation of deposits on the heat transfer surfaces within the boiler. This buildup acts as an insulating barrier, preventing efficient heat transfer.

As a result, the combustion gases must reach a higher temperature to achieve the necessary heat exchange for producing steam or hot water. Consequently, a higher flue gas temperature suggests that more fuel is being burned to generate the required heat, leading to increased fuel consumption. Monitoring flue gas temperatures is a critical part of boiler maintenance, as significant deviations can signal issues like fouling that need to be addressed to maintain operational efficiency.