Calculate the volume of a fixed-dome-type biogas digester for the output of two cows. Also calculate the thermal power available from biogas. Use the following data: Retention time: 40 days, Dry matter produced 2 kg/day/cow, Biogas yield=0.22 m3/kg of dry matter, percentage of dry matter in cow dung=18%, Density of slurry=1090 kg/m3  Burner efficiency=60%, Heating value of biogas=23 MJ/m3

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Q: A rotary dryer fired with bunker oil having HHV = 10, 000 kcal/kg is to produce 20 MT/hr of dried…

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