In a vertical sectional boiler, how are the sections arranged?

In a vertical sectional boiler, the sections are arranged one above the other. This design allows for efficient use of space and optimizes the heating surface area of the boiler. By stacking the sections vertically, this configuration enhances the flow of flue gases and facilitates the efficient transfer of heat from the combustion gases to the water or steam inside the boiler.

This vertical arrangement also promotes effective circulation within the boiler, allowing for the efficient removal of heat and contributing to overall performance and efficiency. In contrast, arrangements such as side by side would not provide the same benefits in terms of heat transfer and space utilization, limiting the efficiency of the boiler system.