By MICHAELJ — Updated Mar 24, 2022
Biogas is generated from the anaerobic breakdown of organic materials such as manure and plant residues. Its primary component is methane, a clean‑burning fuel that can be harnessed to produce electricity.
Feed the biogas into the inlet of a gas engine. The source can be a pressurized cylinder or directly from a digester. The engine operates like an internal‑combustion engine, with pistons burning the gas to turn a crankshaft and convert chemical energy into mechanical motion.
Attach the engine’s crankshaft to an alternating‑current (AC) generator. The mechanical rotation turns the generator’s rotor, inducing an electric current through electromagnetic induction.
Run the generator’s output to a battery bank for storage or feed it directly into a distribution grid. Before starting the engine, ensure a fire extinguisher is nearby, as methane is highly volatile.
Use a transformer to increase the voltage, minimizing power loss during cable transmission. Verify the system by lighting a bulb or measuring the output with a multimeter.
