Condensing economiser on a gas-fired steam boiler

British Steel Tinplate of Ebbw Vale, South Wales fitted a CEECON condensing economiser to a boiler to take full advantage of their cold nitrogen deaerated boiler feedwater. Following modifications to the condensing economiser in the early stages of the project the unit has operated succesfully. The average boiler efficiency, on a gross calorific basis, has increased to 90.2 %, saving 34,228 Gj annually compared to a boiler without an economiser and 23,151 Gj compared to a conventional economiser