Patent ID: 6216684
Filing Date: 2001-04-17
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;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 filel load consisting of any combination of cut lengths of 2"".times.4"" or 4"".times.4"" dimensional lumber at a dry basis moisture content of between 19 and 25%, individual fuel pieces spaced between 1"" and 2"" 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; anda flue connected to the combustion chamber disposed in fluid communication with the combustion chamber wherein combustion products are vented from the combustion chamber.