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

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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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

. [Ans: 140.55 W]

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