 | Criteria for the Dissemination of Biogas Plants for Agricultural Farm and Household Systems (GTZ, 1993, 25 p.) |
 |  | 7. Data collection |
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7.1. Daily gas demand of a farm household or farm
Cooking
The gas demand can be defined on the basis of energy consumed previously.
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1 kg firewood |
then corresponds to |
0.2 m³ biogas |
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1 kg dried cow dung |
" " " |
0.1 m³ biogas |
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1 kg charcoal |
" " " |
0.5 m³ biogas |
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11 kerosine |
" " " |
2.0 m³ biogas |
The gas demand can also be defined using the daily cooking times. The use of a stove per hour then corresponds to about 0.3 m³ biogas.
Lighting
1 lamp consumes about 0.5 m³ biogas per day (i.e. about 0.13 - 0.18 m³/h)
Cooling
For 100 I refrigeration volume, about 2 m³ biogas per day depending on outside temperatures must be assumed. A larger household refrigerator consumes about 3 m³/day
Heaters
Per heaters for pig or chicken rearing 0.2 - 0.3 m³ biogas per hour has to be assumed.
Motors
Any surplus gas can be used in addition in diesel
motors. For this to be worthwhile, 10 m³ biogas/day should be
available.
To generate 1 kWh electricity with a generator, about 1 m³
biogas is
needed.
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