Flue gas energy transfer system
OwnerCarlos Zayasinventor
Life of this patent
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Abstract
A flue gas energy transfer system for increasing the efficiency of hot-water and/or steam boiler. They system utilizes an arrangement of heat transfer ducts with damper elements for the selective diverting exhaust combustion gases. The heat transfer ducts transmit the exhaust gases for contiguous contact with the boiler for conductive heat transfer. The heated gases are retained within the transfer duct after boiler shutdown for maintaining an elevated water temperature.
Claims15
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.
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 for discharging combustion gases from the collector member into the atmosphere, an auxiliary heat transfer duct in communication with the collector member, said auxiliary heat transfer duct and flue pipe including damper means for selectively diverting the exhaust gases through the heat transfer duct to the flue pipe, said heat transfer duct being in contiguous contact with an exterior wall of the boiler for a majority of its length for transferring heat from the exhaust gases to the fluid medium contained within the boiler.
Dependencies are inferred from the claim text.