A solar-assisted biogas system: A new approach

Abstract In order to increase the production of biogas, particularly in the winter months of northern India, a new design of a collection-cum-storage water heater integrated with the dome of conventional Indian (KVIC) biogas units has been proposed and studied theoretically. During sunshine hours, the biogas system is exposed to solar radiation to increase the slurry temperature, and is covered with movable insulation to avoid night heat losses from the top as well as the sides of the dome. Some interesting conclusions have been drawn.