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  • 18 Apr 09

    motorcycle drive by charcoal solid fuel

    nunkorat
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    motorcycle drive by charcoal solid fuel

  • 19 Apr 09

    It uses the same type of cylinder, but before packing it with sawdust I insert four triangular metal forms, creating four smaller columns of sawdust each with a constant width. I´ve tested it and it seems to burn at a pretty constant temperature. Now I just have to play with the size of the opening and the height of the sawdust column to achieve the particular temperature that I want for baking.

    posted by Jim Wilmes | 7:10 PM
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  • 19 Apr 09

    was just doing a little reading on the drum sawdust stoves often used in wwII and elsewhere. the basic idea is packing sawdust into a drum, with a pipe or taper in the center, which is removed after packing. air is introduced in the bottom, which slowly burns the sawdust cylinder or cone outward, with gases and heat going upward. see here: http://listserv.repp.org/pipermail/gasification_listserv.repp.org/2006-January/003682.html or here with drawing. http://gasifiers.bioenergylists.org/?q=node/16 or here for a very simple one in mother earth news. http://www.motherearthnews.com/Green_Home_Building/1974_November_December/How_To_Build_And_Use_A_Sawdust_Stove or here for the best design i could find http://sleekfreak.ath.cx:81/3wdev/VITAHTML/SUBLEV/EN1/SAWDSTOV.HTM given the directional nature of its combustion, such a design is operating partially as a gasifier. but the air flow control is a bit loose so a mandatory reduction zone is not well maintained. if such a design was modified so that the pipe in the center was narrow and long (somewhat like the mother earth design), as well as made out of high temp stainless steel, air passed from one end or the other would result in a good separation between combustion and reduction zones. and therefore a good gasification process would happen. sawdust would still be packed in like the sawdust stove. shredded paper would work too. packing would have to continue during the burn so that the fuel stayed against the center tube mesh. such is not trivial, but it likely easier than fireballing and other off site machine densification efforts. maybe a loose pack with a constantly turning short auger at the top. new fuel introduced below and packed down enough to keep it reasonably tight against the central mesh tube. yes, many questions here. but it is an interesting design direction to consider towards the always wonderful imagined goal of having a paper shredder on your car, insert trash, and start the engine thusly. this design would reduce many of the paper processing difficu

  • 19 Apr 09

    Abstract;The co-generation system by sawdust gasification has been developed. The gasification reactor is vertical fixed bed type and heat resources for gasification depends on partial oxidization of sawdust by the air sucked through the bottom of the reactor. The produced gas is washed and is converted to electric power at the gas engines and generator. Waste heat energy is recovered as hot water and is converted into hot air which is used for drying lumber. The efficiency of energy recovery is beyond 50% in this co-generation system. The mechanism of reaction in the gasification reactor is not clear, so we measured the characteristics of this system which is represented the product gas, residue and so on. And we investigated the condition of the inside reactor which was stopped after 5 years operation. Consequently a part of the reaction condition in the gasification reactor became clear. (author abst.)

  • 19 Apr 09



    QUICK NOTES
    Mongabay, a leading resource for news and perspectives on environmental and conservation issues related to the tropics, has launched Tropical Conservation Science - a new, open access academic e-journal. It will cover a wide variety of scientific and social studies on tropical ecosystems, their biodiversity and the threats posed to them. Tropical Conservation Science - March 8, 2008.

    At the 148th Meeting of the OPEC Conference, the oil exporting cartel decided to leave its production level unchanged, sending crude prices spiralling to new records (above $104). OPEC "observed that the market is well-supplied, with current commercial oil stocks standing above their five-year average. The Conference further noted, with concern, that the current price environment does not reflect market fundamentals, as crude oil prices are being strongly influenced by the weakness in the US dollar, rising inflation and significant flow of funds into the commodities market." OPEC - March 5, 2008.

    Kyushu University (Japan) is establishing what it says will be the world’s first graduate program in hydrogen energy technologies. The new master’s program for hydrogen engineering is to be offered at the university’s new Ito campus in Fukuoka Prefecture. Lectures will cover such topics as hydrogen energy and developing the fuel cells needed to convert hydrogen into heat or electricity. Of all the renewable pathways to produce hydrogen, bio-hydrogen based on the gasification of biomass is by far both the most efficient, cost-effective and cleanest. Fuel Cell Works - March 3, 2008.


    An entrepreneur in Ivory Coast has developed a project to establish a network of Miscanthus giganteus farms aimed at producing biomass for use in power generation. In a first phase, the goal is to grow the crop on 200 hectares, after which expansion will start. The project is in an advanced stage, but the entrepreneur still seeks partners and investors. The plantation is to be located in an agro-ecological zone qualif

  • 19 Apr 09

    Improved Biomass Stoves: Coming of the Corporate Biomass Stove - Mass ...
    British Petroleum's Oorja stove is part of BP's Emerging Consumer Market (ECM) ... I Buy Wood Stoves. March 30, 2009 5:02 AM. Post a Comment. Newer Post Older ...
    improvedstoves.blogspot.com/2008/08/coming-of-corporate-biomass-stoves

  • 26 Apr 09

    Biochar is an astonishing idea…

    After demonstrating the multi-uses of his Swirl Stove, Andrew sent us this summary from an article in The Guardian.

    …Burning agricultural wastes in the absence of air leaves a charcoal composed of almost pure carbon, which can then be crushed and dug into the soil. Biochar is extremely stable and the carbon will stay in the soil unchanged for hundreds of years. The original agricultural wastes had captured CO2 from the air through the photosynthesis process; biochar is a low-tech way of sequestering carbon, effectively for ever. As importantly, biochar improves fertility in a wide variety of tropical soils. Beneficial micro-organisms seem to crowd into the pores of the small pieces of crushed charcoal. A network of practical engineers around the tropical world is developing the simple stoves needed to make the charcoal. A few million dollars of support would allow their research to benefit hundreds of millions of small farmers at the same time as extracting large quantities of CO2 from the atmosphere.”

    And… “Nat is still planning to send a Lucia, he says it runs on dried rabbit droppings!”

    lucia-stove

    http://uk.youtube.com/watch?v=Ws9UV5PzFN4

    • lucia-stove
    • Disclosed herein is a process for enhancing anaerobic biohydrogen production, including: adding into a reactor an organic waste containing hydrogen-producing anaerobic bacteria, a first substrate, and a carrier that permits the hydrogen-producing anaerobic bacteria to adhere and grow thereon, so as to form a mixture; acclimating the mixture at a first agitation speed ranging from 5 to 60 rpm, so that the hydrogen-producing anaerobic bacteria adhere to and proliferate on the carrier, followed by the formation of granular biomasses within the acclimated mixture; and feeding a second substrate into the reactor at a second agitation speed ranging from 5 to 60 rpm, so that the content of the granular biomasses is increased while the second substrate is anaerobically fermented by the hydrogen-producing anaerobic bacteria in the granular biomasses to result in the production of hydrogen.
       
         
       
        
         
       
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  • 08 Jul 08

    Mayon Turbo Stove: Introduction
    Fueling the fight against poverty

    The mountains of surplus rice hulls found throughout Southeast Asia and Africa can now be used as a convenient and low cost cooking alternative fuel source in the Mayon Turbo Stove (MTS). Given that rice is the number one food crop in t

    • blinks
            
        A forth-coming collection of links and resources about stoves.  About half the world's population cooks on indoor fires that give off poisonous gases and account for the fourth cause of death of childen under five years old. 
       
       More explanation coming!
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  • 15 Jun 09

    * Enviar arquivo de vídeo
    * Gravar da webcam

    Downdraft Gasifier Part 3 (HELP...!!!)

  • 20 Jul 09

    Cutaway Diagram of the Anila Stove
    Submitted by Tom Miles on 16 November 2008 - 5:29pm
    Last updated November 16, 2008
    Cutaway Diagram of the Anila Stove

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    * 1439 reads
    * Original
    * Thumbnail
    * 400px

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