What is a common effect of overheating in a boiler?

Overheating in a boiler typically leads to fatigue and failure of materials. When a boiler is subjected to temperatures beyond its design limits, the structural integrity of components such as the pressure vessel, pipes, and fittings can be compromised. Continuous exposure to excessive heat can result in thermal stress, leading to warping, cracking, or even catastrophic failure of these materials. This is particularly critical in high-pressure boilers where the integrity of materials is paramount for safe operation.

In contrast, increased efficiency is generally not an outcome of overheating, as it can lead to operational instability and energy loss due to steam quality issues. Overheating is also likely to increase maintenance costs due to the need for repairs or replacements of damaged components, rather than lowering them. Finally, while stabilization of pressure is necessary for safe operation, it is typically achieved through careful control of heating and system operation, not through overheating, which can actually cause pressure fluctuations and potential safety hazards. Therefore, the correct understanding of the effects of overheating directly highlights the importance of maintaining proper operational temperatures within the limits specified by manufacturer guidelines and industry standards.