When a packaged firetube boiler is used as a power boiler, what feature is emphasized?

When a packaged firetube boiler is used as a power boiler, the emphasis is placed on having a stronger design. This is crucial because power boilers are often subjected to higher pressures and temperatures compared to conventional heating applications. A robust design ensures that the boiler can safely handle these increased operational demands, maintaining structural integrity under intense conditions.

The stronger design typically involves enhanced materials, thicker boiler walls, and more rigorous engineering standards to accommodate the operational stresses. This attention to strength and durability helps prevent failures and prolongs the lifespan of the boiler, ensuring safe operation throughout its service life.

While compactness, lower operating pressures, and fewer components are advantageous features in certain applications, they do not solely highlight the key focus of strength and resilience that is necessary for power boilers operating under more demanding circumstances.