The internal combustion engines used for overseas biogas power generation mainly use Otto engines and diesel engines, and their power per unit weight is about 27 kW/T. Gas engines and steam engines are used in steam turbines. The advantage of gas engines is high power per unit weight, usually 70 to 140 kW/T; Foreign biogas generators are mainly used in the landfill biogas treatment process. At present, the United States has many mature technologies and projects in the field of biogas-based power generation and ranks first in the world. Internal combustion engines used for biogas-based electricity generation in Europe have a larger unit capacity, from 0.4 to 2 MW, and the efficiency of electricity generation from landfill biogas is approximately 1.68 to 2 kWh/m3.
The specific price is unclear.