Biomass Stove Design

Effective cooking stoves share some key design principles. Here we hope to share those with you. Let us know if you find areas we have missed.

Use the design menu to narrow the list of stories to the topic specific to your interest and application.

Principles

  • Cookstove Matrix

    Paul Anderson, March, 2009 How many of each major type of cookstoves exist in the developing societies(functioning in 2009)? The attached "draft" Matrix gives you my guesses. Perhaps YOU have additional input. Maybe we should change the Matrix. More columns, more lines. Or do you agree with what content? What I am attempting is to get us all reasonably "on the same page", literally on the same single page. Please look carefully at the two Notes at the bottom. In the general rank ordering, any stove type (or specific stoves within a type) might be shifted one or two columns to the left or right. But the question is, are the notes and orderings reasonably correct? There is no right or wrong, best or worst. By sheer numbers of units, the 3-stove fire is "best." It literally is "the competition to beat" for all of the other stoves. The file is an active MS Word document ( .doc), so you can change it as you please, but please indicate that you have altered it. (I desire neither the glory nor the blame for what you contribute.) It is a very small file and might be distributed with this message.

  • Stove Safety Panel at ETHOS - Viewpoints from corporations, standards institutes, and small developers

    Hello stoves community,

    At ETHOS 2009 we held a panel on stove safety, bringing in viewpoints from corporate standards development, national standards certification, and small to medium scale developers. The team led by Nathan Johnson (Iowa State University) included Crispin Pemberton-Pigott (New Dawn Engineering), Casper Thijssen (Philips), and Karabi Dutta.

    The panel gave a comparative analysis of how different stove industries (multinational corporations, medium-scale companies, NGOs, small developers, etc.) addressed fundamental stove safety questions. These topics included:

    a) applicability of standards and regulation;
    b) incentives and benefits
    c) facilities and equipment availability
    d) cost vs. benefit
    e) resulting action

    We determined that each type of industry has a different perspective that influences their path or actions towards a safer stove. And that all sub-industries may not produce safer stoves given the same incentive mechanisms or policies. As such more than one path to safety may be needed to reach the greatest amount of end-users (and producers). The panel ended the discussion with an overview present work in stove safety with recommendations for next steps.

    Please view the attached file for more details. I will be leading a group in 2009 to work on the following: assemble database of injury data, b) analyze incentive mechanisms, cost/ benefit, c) development of lab testing procedures for different stove categories, d) publication of findings/ results, and e) look for partnerships with international agencies to support safer stove design and production.

    Please contact me if you have any questions. There will be more updates to follow. Best,
    Nathan Johnson
    atlas@iastate.edu
    PhD Candidate, Mechanical Engineering, International Development
    Iowa State University

  • Natural Draft Biomass Gasifier Stove

    Design and Development of a Natural Draft Biomass Gasifier
    R. Krishna Kumar February 28, 2009

    Naturl Draft Gasifier - KumarNatural Draft Gasifier - Kumar

    N D G - BASICS & PRINCIPLES

    • Operates under the principlle of “ Chimney Effectt ”
    • Natural draft caused by density difference

    UNIQUE FEATURES COMPARED TO CONVENTIONAL SYSTEMS

    • No blower is required for the operation
    • Automatically takes the required quantity of air for Gasification
    • Convey the Producer Gas formed by Gasification - Naturally
    • Reduced fuel consumption compared to traditional chulas

    More detail, schematic pictures and testing information are in the attached pdfs and in the 2004 discussion:
    http://www.repp.org/discussiongroups/resources/stoves/kumar/ndg.htm

  • USING BIOMASS IN KEROSENE STOVE

    This is an experiment using biomass in the KEROSENE WICK STOVE. http://e-kerbiostoveexp.blogspot.com/ (for more photographs) The stove was lit at the top using a little amount of biomass soaked in kerosene. The fine holes of 1 to 2 mm located all along the inner and outer frame are useful in achieving very good bluish flames. The flames continued for 30 to 45 minutes duration. Only at the end the performance was bad, the option was that, a lid was used to shut down safely. The fire was very high (Reasons I am not sure). If one does not have enough kerosene, and in emergency one can use the kerosene stoves too with fine wood shavings as fuel. The end product is very good biochar. I am thankful to TOM REED for explaining the functioning of a Kerosene stove, which was the motivation for doing this experiment. http://listserv.repp.org/pipermail/stoves_listserv.repp.org/2009-January...
    Also see http://e-woodgasstovemodified.blogspot.com/

  • Design

    Biomass Cookstove Design

    Design Principles and Types of Stoves and Food Warmers

    Design Principles

  • Ten Design Principles for Wood Burning Stoves

    Ten Stove Design Principles, Larry Winiarski, Dean Still, Aprovecho, August 2005

  • Design Principles for Wood Burning Cook Stoves

    Design Principles for Wood Burning Cook Stoves, Aprovecho Research Center, Partnership for Clean Indoor Air, Shell Foundation, June 2005 (1MB pdf)

  • Stoves A to Z

    Stoves by Name With Links

        Key:<em>Common name</em> - Organization/Reference - Countries - Fuels<br>
    
    
               <em>3 Stone</em> (3 pierre am&eacute;lior&eacute;)
    
  • Design Principles for Retained Heat Cookers

    Design Principles for Retained Heat Cookers
    Dean Still, Aprovecho Research Institute, March 2005

    Guesses at Design Principles for a Retained Heat Cooker

    1.) Air exchanges are more important than insulation

  • Diez Principios de Diseno para Estufas de Lena

    Diez Principios de Diseño para Estufas de Leña, Translated by Jim Wilmes, Una familia February 2006

  • Ten Design Principles for Wood Burning Stoves

    Ten Design Principles for Wood Burning Stoves (pdf), Larry Winiarski, Dean Still, Aprovecho, August 2005 (Other Translations Welcome!)

  • 12 Rules for Rocket Stove Combustion in Mandarin

    12 Rules for Rocket Stove Combustion in Mandarin Mandarin Chinese Bryan Willson, January 2006

Calculation

Drawings

  • Rocketstove.org is Online

     

    Dear friends,  

    www.rocketstove.org  is finally online! And our friend John page from Aprovecho has agreed, at least in the short term, to be the new web administrator.   

    Our goal is to make this a practical site. For example the key content that I have right now is the Institutional Rocket stove  design tool that will allow users to  generate a custom set of institutional stove plans (brick and metal)  just by inputting pot size and a few other  key inputs .Ideally this would be the site that users would  turn to for specific plans on how to construct  rocket stoves , bread ovens, dryers kilns etc. If you have content that features step by step stove plans please register and then post them to the site.  (note e: g it might take a day or 2  to approve your registration  as I have to manually  accept each registration ) .  Registered users will eventually be able to  produce their own home page if desired , or just add contact info. Foremost I would appreciate it if we could link your webpage to ours and vice versa.

    The second goal of the site is to link people in the stove community by interest and region . For example someone could turn to the site and be linked to stove producers, purchasers and/or researchers in  China, Guatemala,  or Uganda. As the site grows into phase two we will add more functionality (ordering stoves online, visitors donating to specific projects, etc)   but initially I would love to collect as many links and content as possible in the next few weeks for the launching of the site . 

    At present this is a volunteer effort , and John and I would appreciate any form of support (financial or otherwise) from the stove community to get this web page up and running. The webpage was only made public last week so we are still very much in our infancy so we appreciate your patience as we smooth out the wrinkles. 

    Also, Please feel free to forward this e-mail to anyone you think might be interested. 

    Peace 

    Peter Scott
    Biomass Energy Consultant
    cel (USA) : 541 232 7955
    skype:rocketmanpeter
    cel(Malawi): 265 856 9155
    USA address
    78590 Echo Hollow Lane
    Cottage Grove,OR
    97424
    USA

     

  • Rocketstove.org is Online

     

    Dear friends,  

    www.rocketstove.org  is finally online! And our friend John page from Aprovecho has agreed, at least in the short term, to be the new web administrator.   

    Our goal is to make this a practical site. For example the key content that I have right now is the Institutional Rocket stove  design tool that will allow users to  generate a custom set of institutional stove plans (brick and metal)  just by inputting pot size and a few other  key inputs .Ideally this would be the site that users would  turn to for specific plans on how to construct  rocket stoves , bread ovens, dryers kilns etc. If you have content that features step by step stove plans please register and then post them to the site.  (note e: g it might take a day or 2  to approve your registration  as I have to manually  accept each registration ) .  Registered users will eventually be able to  produce their own home page if desired , or just add contact info. Foremost I would appreciate it if we could link your webpage to ours and vice versa.

    The second goal of the site is to link people in the stove community by interest and region . For example someone could turn to the site and be linked to stove producers, purchasers and/or researchers in  China, Guatemala,  or Uganda. As the site grows into phase two we will add more functionality (ordering stoves online, visitors donating to specific projects, etc)   but initially I would love to collect as many links and content as possible in the next few weeks for the launching of the site . 

    At present this is a volunteer effort , and John and I would appreciate any form of support (financial or otherwise) from the stove community to get this web page up and running. The webpage was only made public last week so we are still very much in our infancy so we appreciate your patience as we smooth out the wrinkles. 

    Also, Please feel free to forward this e-mail to anyone you think might be interested. 

    Peace 

    Peter Scott
    Biomass Energy Consultant
    cel (USA) : 541 232 7955
    skype:rocketmanpeter
    cel(Malawi): 265 856 9155
    USA address
    78590 Echo Hollow Lane
    Cottage Grove,OR
    97424
    USA

     

Plans

  • Natural Draft Biomass Gasifier Stove

    Design and Development of a Natural Draft Biomass Gasifier
    R. Krishna Kumar February 28, 2009

    Naturl Draft Gasifier - KumarNatural Draft Gasifier - Kumar

    N D G - BASICS & PRINCIPLES

    • Operates under the principlle of “ Chimney Effectt ”
    • Natural draft caused by density difference

    UNIQUE FEATURES COMPARED TO CONVENTIONAL SYSTEMS

    • No blower is required for the operation
    • Automatically takes the required quantity of air for Gasification
    • Convey the Producer Gas formed by Gasification - Naturally
    • Reduced fuel consumption compared to traditional chulas

    More detail, schematic pictures and testing information are in the attached pdfs and in the 2004 discussion:
    http://www.repp.org/discussiongroups/resources/stoves/kumar/ndg.htm