4. The following data are given for a family single stage biogas digester shown in Figure Q 4 suitable for the output of ten cows: the retention time is 50 days, temperature 30°C, dry matter consumed per day = 4kg, biogas yield is 0.48 m³ per kg. The efficiency of burner is 80%, methane proportion is 0.6, heat of combustion of methane =35 MJ/m³. The density of the dry material in the fluid is approximately 80 kg/m³ Calculate: (i) The volume of biogas digester (ii) The power available from the digester.

4. The following data are given for a family single stage biogas digester shown in Figure Q 4 suitable for the output of ten cows: the retention time is 50 days, temperature 30°C, dry matter consumed per day = 4kg, biogas yield is 0.48 m³ per kg. The efficiency of burner is 80%, methane proportion is 0.6, heat of combustion of methane =35 MJ/m³. The density of the dry material in the fluid is approximately 80 kg/m³ Calculate: (i) The volume of biogas digester (ii) The power available from the digester.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

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4. The following data are given for a family single stage biogas digester shown in Figure
Q 4 suitable for the output of ten cows: the retention time is 50 days, temperature 30°C,
dry matter consumed per day = 4kg, biogas yield is 0.48 m³ per kg. The efficiency of
%3D
burner is 80%, methane proportion is 0.6, heat of combustion of methane =35 MJ/m³. The
density of the dry material in the fluid is approximately 80 kg/m³
Calculate:
(i) The volume of biogas digester
(ii)
The power available from the digester
GAS REMOVAL
GAS STORAGE
SCUM LAYER
SUPERNATANT LAYER
SUPERNATANT
OUTLETS
SLUDGE
INLET
ACTIVELY
DIGESTING
SLURRY
DIGESTED
SLUDGE
SLUDGE OUTLET

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