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15 Oct 08
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22 Mar 07
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Also, the production of industrial cooking oils is primarily monocultural and inherently devastating to enormous areas of the planet. Biologically, production of oils requires a more complex and less efficient energy pathway than plant production of cellulose and ligneous material.
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Pain calculates the economics of a theoretical 1000 hectare unit managed according to his methods and estimates that process energy required is 12% of energy yield, while counting in all inputs, ores, metallurgy, wood, implements, and so on, 26%; that equipment can be paid for in five years and the financing, including interest, retired within 10. All the while 16 people will be employed at good wages.
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The results are impressive. From a hectare of fire-prone and unproductive forest, 50 tons of agricultural fertilizer can be derived along with the energy equivalent in fluid form, of 4000 liters of high-grade petrol.
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The plastic coil conducted water around the gas tank while serving as a heat exchanger. By regulating the flow of water, the temperature of the gas reactor could be regulated to optimize gas production, which in this example was about 1300 liters per day
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Five kilograms of finely shredded brushwood compost yield about 1 cubic meter of methane—about 5,500 kcaI—equivalent to about half a liter of high-grade petrol in energy content
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Referring to the work of Ducellier, Isman, John Fry, Sauze, and others
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Pain reports that he heated his five—room house of 1000 square feet (100 m2) and provided hot water (at a rate of 4 liters! minute) for its occupants from a 50 ton pile for six months, but that a 12 ton pile maintained that output for a full 18 months.
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A large heap (75 cubic meters, about 50 tons) of this material could be obtained from a hectare of careful forest thinnings (35-40 tons).
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The brushwood shavings must then be saturated with water. A cubic meter of woody material will absorb up to 700 liters of water over three days if continuously moistened.
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One of these, a tractor-driven model, was awarded fourth prize in the 1978 Grenoble Agricultural Fair.
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He reports that machinery that shaves rather than chips the branches and limbs is preferred.
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Methane—natural gas—is an industrial fuel. It can provide combustion energy for cooking and space heating, but it can also run motors. Convenience in transport and for vehicle use dictates compressing the gas, but this too is possible with methane-generated electricity and simple compressors. The nimble French inventor set out to link all these processes by the necessary technical elements.
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Jean
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