Consider the following data for a domestic biogas plant:Number of cows = 5Retention time = 20 daysTemperature = 30°CDry matter consumed = 2 kg/dayBiogas yield = 0.24 m3/kgEfficiency of burner = 60%Methane proportion = 0.8Heat of combustion of Methane = 28 MJ/m3Density of dry material in fluid = 50 kg/m3The power available from the digester will be nearly

Consider the following data for a domestic biogas plant:Number of cows

1.	Consider the following data for a domestic biogas plant:Number of cows = 5Retention time = 20 daysTemperature = 30°CDry matter consumed = 2 kg/dayBiogas yield = 0.24 m3/kgEfficiency of burner = 60%Methane proportion = 0.8Heat of combustion of Methane = 28 MJ/m3Density of dry material in fluid = 50 kg/m3The power available from the digester will be nearly
A.	16.2 MJ/clay
B.	24.3 MJ/day
C.	32.3 MJ/day
D.	48.6 MJ/day
Answer» D. 48.6 MJ/day

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