Patent ID: 6672255
Filing Date: 2004-01-06
Classification: F22B,F24D,Y02B

Abstract:
A flue gas energy transfer system adapted for use with an internally fired boiler having a combustion chamber providing a heat source for a fluid medium contained within the boiler, said boiler including a collector member for receiving heated exhaust gases from the combustion chamber, said transfer system of this invention comprising a flue pipe in communication with the collector member for discharging combustion gases into the atmosphere, an auxiliary heat transfer duct in communication with the collector member, said heat transfer duct selectively providing an alternative flow path for the exhaust gases from the collector member to the flue pipe, a damper member within the respective flue pipe and the heat transfer duct, for selectively diverting the exhaust gases to the alternative flow path, with said heat transfer duct being in contiguous contact with the boiler for heat transfer from the exhaust gases to the contained fluid medium.