F - Mech Eng,Light,Heat,Weapons – 24 – D
Patent
F - Mech Eng,Light,Heat,Weapons
24
D
122/94
F24D 17/00 (2006.01) F23G 7/10 (2006.01) F23L 17/16 (2006.01) F24H 1/26 (2006.01) F24H 1/34 (2006.01)
Patent
CA 1174541
Title of the Invention SOLID FUEL HOT WATER HEATER Abstract of the Disclosure A solid fuel burning hot water heater is described having a primary combustion chamber with a refractory material base portion which forms the locus of combustion. A water jacket defines an upright portion over the refractory base portion for receiving a charge of fuel in a generally vertical stack. The water jacket is coupled to a source of water for at least convection circulation and assists in confining the locus of solid fuel combustion to the base of the chamber. Heat exchange channels or pathways are defined around the outer periphery of the water jacket in heat exchange relationship with the water jacket for transfer of heat from the end products of combustion to the circulating water. A flue gas delay channel arrangement extends from the draft outlet at the base of the combustion chamber to the heat exchange pathways. The delay channel pathways provide delayed propagation of gaseous products of primary combustion in a high temperature refractory environment sufficient to afford substantially complete secondary burning. In the preferred configuration the flue gas delay channel provides pathways coaxially around the walls of the refractory base portion of the primary combustion chamber while the heat exchange pathways are formed coaxially around the water jacket. An opening is formed between the flue gas delay channel pathways and the heat exchange channel pathways. The refractory base portion walls of the primary combustion chamber may be formed in a "U" shaped or arcuate configuration.
402548
Daniele Mark R.
Hill Richard C.
Board Of Trustees Of The University Of Maine (the)
Meredith & Finlayson
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