To prevent boiler failure due to thermal issues, what needs to be controlled?

Controlling temperature changes in the boiler is crucial for preventing thermal stress, which can lead to boiler failure. When the temperature inside the boiler fluctuates too rapidly or exceeds safe limits, it can cause metal fatigue, thermal shock, and expansion issues. Managing temperature changes ensures that the materials used in the boiler can expand and contract uniformly, reducing the risk of cracks, leaks, or other structural failures.

While fuel type, water pressure levels, and boiler size all play important roles in the overall operation and efficiency of a boiler, they do not directly address the thermal issues related to temperature changes. Properly monitoring and controlling the temperature is essential for maintaining the integrity and safety of the boiler system.