Agricultural Anaerobic Digesters: Design and Operation

Dec 01, 2016 · The biogas fuel supply to the boiler was adjusted according to digester-heating needs by regulating gas pressure at the burner with a throttling valve. The pressure was manually adjusted between 0.8 and 5 in (20 and 125 mm) water gage, which corresponded to 35 to 95 ft 3 /hr (1 to 2.7 m 3 /hr) of biogas, depending on outside temperatures and

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