BOILER ECONOMIZER CALCULATIONS

Abstract

Economizer elements, when placed such that the inlet & outlet header are both on top, cause some moisture to be left in the element when the boiler is drained down. Moreover, in this direction the element depth is limited to the space available in the duct. (Refer to slide #4) – Thus the number of bends has to be increased to get a higher heating surface area. The advantage of a complete counter flow is also not achieved. Thus the design of placing the inlet header on the bottom & the outlet header on top was selected.