NOVELTY - The fermenter for production of biogas from organic material, comprises fermentation chamber (11) with round surface for fermenting material, a filler mechanism (12) for substrate to be fermented arranged in boundary region of chamber, a pressure-free gas storage (13) with gas removal device, arranged over the fermentation chamber, an agitating device, a plenum chamber (16) with overflow edge and pumping mechanism (17) for the removal of fermenting material from the chamber and supplying into the plenum chamber. The fermentation chamber is implemented in the form of a ring channel.    USE - Fermenter for the production of biogas from organic material (claimed).    ADVANTAGE - The fermenter ensures higher yield of biogas from organic material and has good thermal conductivity.    DETAILED DESCRIPTION - The fermenter for production of biogas from organic material, comprises fermentation chamber (11) with round surface for fermenting material, a filler mechanism (12) for substrate to be fermented arranged in boundary region of chamber, a pressure-free gas storage (13) with gas removal device, arranged over the fermentation chamber, an agitating device, a plenum chamber (16) with overflow edge and pumping mechanism (17) for the removal of fermenting material from the chamber and supplying into the plenum chamber. The fermentation chamber is implemented in the form of a ring channel. The plenum chamber within its lower region has a fixed bed reactor made of stable material. Below the fixed bed reactor a pumping mechanism is intended for the removal of fermented residue material. The plenum chamber is arranged in the center of the fermentation chamber. The agitating device is arranged in the boundary region of the fermentation chamber so that it sucks material from surface of the fermentation mass and presses downwardly in diagonal direction in such a way a material flow running within the region of the agitator is generatable sigmoidally. The material flow runs through circumferential of the fermentation chamber. The agitating device consists of two agitators and is adjustable to the vertical axis and/or to the horizontal axle with respect to its angle. One of the two agitators points diagonally upward and the other points diagonally downward, where both agitators point over at different sides at the vertical axle center of the fermentation chamber. A temperature device for the substrate is arranged in such a way that the temperature of the fermenting material in the fermentation chamber is adjustable through the tempering of the filler mechanism for substrate. The filler mechanism is arranged between the two agitators. In the plenum chamber, a device for the preventing the formation of a floating cover at the overflow edge is intended and acts as compressed air mechanism. The gas storage is limited upwardly through a film clamped over the upwardly opened fermentation chamber. The fermenter has a roof structure arranged over the gas storage. No electrical mechanisms are intended in the region of the fermentation chamber, the gas storage and/or the plenum chamber. The fermentation chamber, the gas storage and/or the plenum chamber are implemented as Faraday's cage. The fermenter consists of a settling channel arranged within the base region of the fermentation chamber.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a fermenter for production of biogas from organic material.    Fermentation chamber (11)    Filler mechanism (12)    Gas storage (13)    Plenum chamber (16)    Pumping mechanism. (17)