What minimizes hardships to furnace walls in boiler design?

Supporting the boiler through overhead hangers minimizes hardships to furnace walls because it effectively distributes the weight of the boiler system and alleviates stress on the walls. This method helps to prevent cracking or damage that can occur due to thermal expansion and contraction, as well as weight-related strains. By suspending the boiler from above, the walls are not burdened by heavy loads, allowing for better flexibility and less friction against the material of the walls, which is crucial for maintaining structural integrity.

While other methods, such as installing additional insulation or using movable panels, can improve efficiency and safety in boiler design, they do not specifically address the stress and loading issues faced by the furnace walls. Movable panels can enhance accessibility but may not provide the necessary support to alleviate stress, and insulation primarily focuses on thermal efficiency rather than structural support.