Experimental study of wood gas-operated power plant operation.

Abstract

In the power supply system, an important place belongs to autonomous power systems. Considering the need to reduce greenhouse gas emissions and the use of renewable energy sources, the primary source of energy in an autonomous power system can be a wood gas generator. The fuel for such a generator is biomass. The wood gas enters the internal combustion engine, which drives a synchronous generator. The resulting electrical energy is supplied to the consumer. The article presents an experimental plant for generating electric energy on the basis of wood gas, and provides the results of studies in the effect of the used power of the synchronous generator on the gasifier fuel consumption and the amount of gas produced by it. The experimental plant contained a downdraft gasifier, the feature of which is that the combustion and recovery zones have the same diameter. The gasifier was equipped with gas purification filters and a gas cooler. The resulting gas was supplied to the internal combustion engine through a special mixer equipped with the air supply control valve. A synchronous generator was used to convert the mechanical energy of the engine into electrical energy. As the engine and electric generator petrol-electric AC set AB-4-T/400-M1 was taken. The petrol-electric set has a rated power of 4 kW and produces a three-phase current with a voltage of 220 V. During operation of an experimental gas-operated plant, the growth of the consumed electric power by 12 times causes the linear growth of gasoline consumption by 1.59 times and air consumption by 1.63 times. During the operation of the wood gasoperated experimental plant, an increase in electrical power consumption by 9.5 times causes a linear increase in gas consumption by 2.14 times and air consumption by 1.38 times. The cost of the generated electricity when using wood gas is 2.4 times less than when using gasoline.