Fixed temperature is constantly supported inside the biogas reactor in order to maintain optimal bacteria living conditions. The temperature inside of the biogas reactor is mesophilic, which is about 37°С. Reactor heating is done using the heating system. Inlet heating temperature in the digester is 80°С. The outlet temperature is 55°С. The heating system is a network of pipes placed inside the digester walls or on the inner wall surface. If the biogas plant is equipped with a co-generator the hot heating medium is supplied from the cooling system of the engine. Boilers fuelled by biogas, natural gas or their mixture can be also used as heat power source for the biogas plant.

Photo. Heating unit of biogas plant