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First, the gasification process will be explained in this paper: it is called pyrolysis and stems from the Greek words pyr (fire) and lysis (solution). The dry biomass releases wood gas under the influence of heat and absence of air. At the end of the process, charcoal remains for further applications. In contrast to carbonization in a kiln or carbonizer, the wood gas (smoke) is used for cooking purposes, emitting very low carbon monoxide (CO) and particulate matter (PM) exhaust gases. This distinguishes the great advantage of gasifiers. They can replace dirty combustion methods like 3-stone fires or charcoal stoves. Gasifier fumes are almost harmless (under ideal conditions and when the device is operated correctly!), allowing indoor cooking. Gasifiers save fuel. Example: to bring 5 liter

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  • Gasifier
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  • First, the gasification process will be explained in this paper: it is called pyrolysis and stems from the Greek words pyr (fire) and lysis (solution). The dry biomass releases wood gas under the influence of heat and absence of air. At the end of the process, charcoal remains for further applications. In contrast to carbonization in a kiln or carbonizer, the wood gas (smoke) is used for cooking purposes, emitting very low carbon monoxide (CO) and particulate matter (PM) exhaust gases. This distinguishes the great advantage of gasifiers. They can replace dirty combustion methods like 3-stone fires or charcoal stoves. Gasifier fumes are almost harmless (under ideal conditions and when the device is operated correctly!), allowing indoor cooking. Gasifiers save fuel. Example: to bring 5 liter
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abstract
  • First, the gasification process will be explained in this paper: it is called pyrolysis and stems from the Greek words pyr (fire) and lysis (solution). The dry biomass releases wood gas under the influence of heat and absence of air. At the end of the process, charcoal remains for further applications. In contrast to carbonization in a kiln or carbonizer, the wood gas (smoke) is used for cooking purposes, emitting very low carbon monoxide (CO) and particulate matter (PM) exhaust gases. This distinguishes the great advantage of gasifiers. They can replace dirty combustion methods like 3-stone fires or charcoal stoves. Gasifier fumes are almost harmless (under ideal conditions and when the device is operated correctly!), allowing indoor cooking. Gasifiers save fuel. Example: to bring 5 liters of water to a boil, >1.3 kg of wood needs to be burned to ashes in a 3-stone fire. By utilization of a gasifier, just 0.45 kg of dry biomass do the same job - with 53% less fuel. As a bonus, the gasifier leaves 90 grams of charcoal, which is called "biochar" to indicate the production difference. A basic model of a gasifier, like the one described in this paper, has a thermal transfer efficiency of 50% to 55%. The sketches explain the gasifier. First the entire device is displayed, below you will see the reactor (inner cylinder) and then the outer shell construction.
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