What is almost always the cause of boiler tube heat blisters?

What is almost always the cause of boiler tube heat blisters?

• A. Water flow issues
• B. Waterside deposits
• C. Insufficient insulation
• D. Excessive pressure

Answer: (B)

Boiler tube heat blisters are primarily caused by waterside deposits. These deposits can accumulate on the inner surfaces of the boiler tubes, leading to a reduction in heat transfer efficiency. When deposits form, they create a barrier between the water and the metal tube, causing localized overheating. As the metal gets excessively hot, it can lead to the formation of blisters that compromise the structural integrity of the tube. Understanding this phenomenon is crucial for maintenance and operation of boilers, as addressing waterside deposits through regular cleaning and monitoring can prevent breakdowns and ensure efficient operation. While the other options relate to boiler operation issues, they do not specifically lead to the blistering effect caused by restricted heat transfer due to deposits.

Boiler tube heat blisters are primarily caused by waterside deposits. These deposits can accumulate on the inner surfaces of the boiler tubes, leading to a reduction in heat transfer efficiency. When deposits form, they create a barrier between the water and the metal tube, causing localized overheating. As the metal gets excessively hot, it can lead to the formation of blisters that compromise the structural integrity of the tube.

Understanding this phenomenon is crucial for maintenance and operation of boilers, as addressing waterside deposits through regular cleaning and monitoring can prevent breakdowns and ensure efficient operation. While the other options relate to boiler operation issues, they do not specifically lead to the blistering effect caused by restricted heat transfer due to deposits.