Patent ID: 6488024
Filing Date: 2002-12-03
Classification: F24B

Abstract:
A solid fuel burning system for burning fuel, comprising:a combustion chamber having a bottom wall, a top wall and four side walls forming an enclosure; at least one openable access door on at least one of the side walls; fixed geometry air supply means for providing a predetermined amount of combustion air to the burning fuel within the combustion chamber resulting in a maximum average burn rate of less than 5 dry kg/hr measured as a time averaged mass burn rate during a full consumption of a single fuel load consisting of any combination of cut lengths of nominally 2â€³Ã—4â€³ or 4â€³Ã—4â€³ dimensional lumber at a dry basis moisture content of between 19 and 25%, individual fuel pieces spaced between 1â€³ and 2â€³ apart, at a loading density of between 6.3 and 7.7 wet pounds per cubic foot of combustion chamber volume and placed on a coalbed having a mass between 20% and 25% of the wet fuel load mass, the fixed geometry air supply means including gas permeable interface seams between any of the top, bottom or side walls or the at least one openable access door; and a flue connected to the combustion chamber disposed in fluid communication with the combustion chamber wherein combustion products are vented from the combustion chamber.