The technical research of heat insulation and controlling of the temperature with the biogas digesters in the severe cold regions in winter

In the reason of the low air temperature and the low ground temperature in the severe cold region in winter, the rates of producing and using biogas are low. It presents a new thought about producing biogas with the joint operation of the solar heating and gas fired boiler by heat, and Stay in control of the temperature in the pond, so it can regular service in the extremely cold regions in winter.