Download - TChar Stoves
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Cut down the tree, dig out the roots
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Traditional charcoal production
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From a distance
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What is a TChar?
• A TLUD microgasifier top “TTop” and charcoal stove or quench base bottom “TBottom”
• The TTop lifts off to drop the char into the TBottom
• The char can be used to continue cooking in a charcoal stove or quenched in a quench base for later use as cooking charcoal or biochar
![Page 6: TChar Stoves](https://reader033.vdocuments.us/reader033/viewer/2022061618/55cf9459550346f57ba1672d/html5/thumbnails/6.jpg)
Why a TChar?
• In cultures that use charcoal as a cooking fuel it may be difficult to convince them to bury it
• Allowing the char to burn to ash in a TLUD is inefficient and significantly shortens the life of the TLUD
• Most TLUD’s require lifting and dumping to get the char out – this can be awkward and dangerous
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Early prototypes - East Africa
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Reconceptualization- KentuckyLoose fit, lift to drop charcoal
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Add base ring for stability
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Add outer cylinder for stability, safety, and preheating secondary air
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Drop in concentrator ring with j-bolt
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Add upper ring for stability and secondary air channeling
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First prototype - KentuckyTChar on charcoal jiko
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Fire!
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We have lift off!
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Hot charcoal for continued cooking
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Some alternative features
• Central secondary air inlets• Drop bottom• Quench base
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Central secondary air inlets
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Will it reduce black carbon?
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Drop bottom and quench base
• True butterfly “valve”• Integral primary air inlets• “air tight”/ water tight container
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Integral primary air
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True butterfly valve
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Pull rod to “open” valve
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“Complete” stove Less pot support and skirtLess primary air plugs
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FUELS
• Dry • Chunky• No other uses
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Spanish lime seed grenn kenep (mamoncillo Sp.) Melicoccus bijugatus
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semans zaman Tropical almond seed Terminalia catappa
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Bamboo chunks ti moso bambu yo
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Coconut shell gous kokoye
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Peanut shells gous pistach yo
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Other possible fuels
• Citrus peels• Coffee hulls• Wood shavings• Corn cob chunks (but often fed to pigs)• Grass bundles• 1” dia micro briquettes: paper waste, grass,
tree leaves/twigs but require shredding, forming, and drying
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Challenging fuelEuphorbia lactea – thorny hedge plant with milky latex -kandelab
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General design considerations
• Beyond a conventional TLUD:– Sized to fit depth of charcoal stove (adjustable?)– Sized to not exceed volume of base– Stable on base– Easily and safely removed for dropping char
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For more information
• www.drtlud.com• TChar Technology Part A: Introduction• TChar Technology Part B: Construction• More coming soon
• Special thanks to Paul Anderson “Dr. TLUD” and Christa Roth