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Homemade biogas digester for cheap renewable off grid electricity with my DIY Stirling engine CHP

My engines 4:34

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Hi all,first a warning:


CAUTION! Don't do this at home unless you are very careful and really know what you are doing. Gaseous fuels are DANGEROUS.



Till now I powered my Stirling engines with liquid gas but I always wanted to produce my own renewable, environmentally friendly and cheap fuel.



Here I present you my way of making biogas which works much better than I expected.



As always I would be very grateful for any comments and suggestions.



Greetings
Ralf
Many thanks for the background music:



Past Sadness by Kevin MacLeod
Link: https://incompetech.filmmusic.io/song/5024-past-sadness

License: http://creativecommons.org/licenses/by/4.0/

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