From 6.5 hp electric biogas architect in Cairo, Egypt

!: From 6.5 hp electric biogas architect in Cairo, Egypt

Last year we ran an electric generator on biogas in the Zabaleen community of Cairo Egypt, but we quickly broke the pull-start mechanism of the engine. This time, on Oct. 7 2010, we removed the starter and used an electric drill with a 21mm socket wrench (using a screw bolt and three nuts to affix it to the drill; a 19mm socket wrench would have also worked) to start the engine. We found that the choke should be set about half way. We also learned that the regulator which comes with the US Carburetion tri-fuel kit is not necessary for low pressure biogas; only the venturi bushing that comes with the kit (which can be installed between the carburetor and the air filter in 15 minutes). A simple valve partially opened (not fully open) provides the right amount of biogas. We put steel wool inside the barrel of the valve in order to protect the engine from the H2S in the gas (which would form sulfuric acid and corrode the engine). The hope is that the steel wool (which Hanna calls "iron dust" in the video) will consume the acid; it may be necessary to put more steel wool in to get a better effect. We will see. Initial observations are that 1 cubic meter of biogas in an ARTI style system, when pressurized with three planters (10 liter buckets of dirt) should give about 45 minutes of electricity which can be used to charge batteries and thus can add to solar and wind powered battery banks, making urban kitchen waste fed biogas a viable alternative energy supplement.

From 6.5 hp electric biogas architect in Cairo, Egypt

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