Abstract: A storage container for granular fuel, comprising a lower, essentially horizontal, limiting surface and at least one adjoining lateral limiting surface, a feeding out device with an axial extension that considerably exceeds its radial extension, the feeding out device being arranged along at least 50%, preferably at least 75%, and even more preferred at least 90% of the axial extension of said lower limiting surface, a forward-feeding device arranged to transport said fuel in a direction towards said feeding out device, comprising a flexible bag that via a pressurized air inlet is inflatable and that is arranged in connection with at least a portion of the storage container's lower limiting surface and its adjoining lateral limiting surface, the feeding out device being arranged inside said storage container and the bag also comprising at least one outlet for pressurized air, whereby a flow of pressurized air is allowed through the bag during the inflation thereof.

Abstract: This invention relates to a device (3) for the combustion of granular, solid fuel, for example pellets and the like, comprising; a combustion chamber (16), an air inlet (24) for feeding air to the combustion chamber (16) via at least one air chamber (38,39,40) and at least one air-duct (41,42) for attaining an air flow through the combustion chamber (16), a feeding and dosing arrangement (10, 11, 12) for feeding of the fuel into the combustion chamber (16), an ignition device (28) for ignition of the fuel, a control unit (32) for operation of the combustion device (3) and parts co-operating therewith, an outlet (26) for hot combustion gases from the combustion chamber (16), a movably arranged ash feeder (29) with a drive unit (30), controlled by the control unit (32) for automatic feeding of ashes, unburned fuel, and slag products (31), out of the combustion chamber (16), wherein the ash feeder (29) comprises a movable front part (51) having a perforated bottom which constitutes the above mentioned inner bott