Are you interested in cooking replacing firewood by biogas? Do you have any cattle or other livestock with fresh manure to get daily? Do you have plenty of water to mix? Perhaps you may be interested in this post about calcualate your own biodigester to generate biogas to cook. This post is inspired by an …
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Construction of a biodigester In the previous post (I) I explained the strenghts of a biodigester for a small kitchen. In this post I will try to summarize the steps to construct one, from Jaime Marti PDF, “Biodigestores familiares.” 1 .- Double layer plastic Cut the black tubular polyethylene rolls of desired size, leaving 50 cm extra on both …
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¿Do you know the Strengths to produce Biogas and natural Fertilizer from organic Waste? Based on a excellent PDF of Jaime Martí, I will write some posts about biodigesters. Today I start with a list of Strenghts of low cost biodigesters for cooking: Energy self-production Biogas is mainly metane, much like the butane and propane gas …
Why renewable energies are not suitable for cities? Because cities do not give the optimal conditions for Weather or environmental phenomena that are the basis of renewable energies: spacious, sun and wind in abundance, availability of land or forest resources. Let us examine: Sol (photovoltaic and solar thermal) A solar installation needs a wide space on the roofs, …
Energy is a basic need Access to energy should be universal, as other basic needs: food, education, housing, etc.. But rural areas, far from power line, does not have electricity. Or natural gas pipe does not reach. The rural dweller has to produce its own electrical or thermal energy, very expensive with diesel fuel. Public funds …
In the previous post I explained that in hot weather, cows eat less and produce less milk. The solution is to cool them with fans, sprinklers or evaporative coolers. Photovoltaic system to generate electricity for chillers What happens if you have NO grid electricity on your farm? You can have your cows cool if you …
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Heat stress in cows The optimum room temperature for milk production is between 13 º and 18 º C. Above 25 ° C, the cow is in heat stress, with these consequences: – Decreased food intake (not to further increase its body temperature) - Decreased reproductive rate and milk production. The profitability of YOUR dairy …
