The extraction of energy from biomass, particularly wood and other waste materials, is a promising sector experiencing dynamic growth in many countries. This is due to its significant energy potential and renewable nature. Although biomass belongs to the category of low-grade fuels, it is characterized by high moisture content (up to 85%), low energy density, low combustion heat, and heterogeneous fractional composition. Traditional biomass combustion systems have a low efficiency coefficient (EC), making it difficult to establish effective energy systems based on them.

Among organic waste utilization technologies, pyrolysis and gasification are among the most effective, as they allow for the production of inexpensive energy carriers and economically justify various industrial processes. Despite the relatively low calorific value of the produced gas, it is suitable for use in fuel devices. An analysis of existing generator gas units operating on wood or plant biomass shows similarities in their operational characteristics: allowable fuel moisture up to 40%, specific weight of the unit 30–40 kg/kW, and EC ranging from 70% to 80%.

The gasification of wood waste ensures the production of fuel gas composed mainly of CO, H₂, and N₂, which can be used in boiler systems as gaseous fuel. The further development of generator gas units should focus on improving the quality of the produced generator gas from biomass waste.

In this context, a modified generator gas unit for moist fuels [1] has been developed, offering the following advantages:

• simplified construction;
• minimal number of moving parts (except for the fuel feed device);
• the ability to use fuel with high moisture content, which in classical systems deteriorated gas quality;
• the production of tar-free gas, eliminating the need for additional purification, thus reducing production costs and complexity while decreasing the unit's overall hydraulic resistance.

The development of such units contributes to increasing the efficiency of biomass utilization and the advancement of environmentally friendly energy production technologies.