ETHOS 2005 Summer Camp August 21-27, 2005
Dean Still, Aprovecho, August 2005
Dear STOVERS AND ETHOS:
You'll find attached the results from the Stove Competition held at Aprovecho.
HOOD SUMMARY AUG 30 2005 (REVISED)
The results are summarized in four categories:
1.) Time to boil 5 liters of water
2.) Fuel to 'cook' per liter (Bring 5 liters to boil, simmer for 30 minutes)
3.) Carbon Monoxide made per liter of water boiled and simmered for 30 minutes
4.) Particulate Matter made per liter of water boiled and simmered for 30 minutes
1.) There is a large difference in the time it takes for stoves to boil 5 liters of water. The slowest stove took 50 minutes while the fastest took less than ten minutes. Stoves with skirts, where the hot flue gases are forced to scrape against the bottom and sides of the pot, are more successful in this category. For instance, Paul Anderson's T-LUD stove used a skirt in the first test but not in the second. The Institutional Rocket uses a very large pot which gives it an important advantage.
2.) Three stoves used less than 100 grams of wood (kiln dried Douglas fir) per liter to boil 5 liters of water and then simmer the remaining water for 30 minutes. Four stoves were grouped around 150g/l. Again stoves with skirts around the pot used less wood.
3.)Paul Anderson's T-LUD stove was very successful at high power in decreasing emissions, both CO and PM. Five of the stoves made about half the CO compared to other stoves in the competition. The Institutional Rocket stove, similar to stoves being made by GTZ and WFP, made less than one g/L.
4.) Again, at high power the T-LUD was impressive in reducing PM. Ken Goyer's Rocket stove made about 25 mg/L. The second best stove, made by Dale Andreatta, emitted about 75 mg/L.
This was fun and we all learned a lot! As soon as the numbers are ready we will be sending on results from comparing systems that measure emissions.
An hour long video was shot at Stove Camp which will be available when it is finished.
Thanks to Shell Foundation for their support.
Ken's Rocket with Insulated skirt
Orjina's Bangladesh Mud Stove
WFP-310 Rocket with 310 Stainless Steel combustion chamber and skirt
TLUD Top Lit Updraft With Ken's Insulated Skirt No Chimney
Ethiopian (Concrete) Rocket Stove
Institutional Rocket Stove with 310 Stainless Rocket Elbow
Lutfiyah's Improved Orjina Stove
Paul's T-LUD with Chimney No-skirt
Priyagni Wood Stove
Ken's Rocket - (Aprovecho) typical rocket with insulated skirt developed by Ken Goyer
Orjina's Bangladesh Mud Stove - (PCIA) Mud stove submitted for testing and improved at Camp by Lutifyah.
Lutfiyah's Improved Orjina Stove - (Aprovecho Camp)
Dean suggested that we include a rocket combustion chamber while trying to keep the exterior pretty much the same. Thus originated 'Lutfiyah's improved stove' (which should actually be called 'Orjina's improved stove'). In any case, the tests showed positive results in terms of time to boil, fuel used, CO..However we still need to work on the PM emissions. As expected just one trial run is not adequate - we will probably have to tweak and test the design some more. Some of the immediate observations were that the combustion chamber needs to be wider to allow women to use cow dung and briquettes and the mixture of the packing material should be dry. We didn't have enough time to sun dry the stove properly.
Lutifyah's plan is to share her findings with local PCIA partners so that they can start to identify brick makers, raw materials, suitability of design etc.
WFP-310 Rocket - (Aprovecho Camp) World Food Program rocket developed in Aprovecho Camp and tested in Africa (2004). Damon has been experimenting with better metals like 310 stainless steel.
TLUD - (Juntos Stoves) Top lit updraft gasifying stove tested with Ken's insulated skirt and no chimney, developed by Paul Anderson. Paul has eliminated the tuyeres in this design and gone to a simple mixing throat.
Paul's TLUD - (Juntos Stoves) Top lit updraft gasifying stove developed by Paul Anderson tested with chimney and no skirt.
Ethiopian Concrete Rocket Stove - (____________)
Dale's Stove - (Aprovecho Camp) stove developed at camp by Dale Andreatta
Institutional Rocket Stove with 310 Stainless Rocket Elbow - (Aprovecho)
Priyagni ("Beloved Fire") stove - (ARTI) improved wood burning portable cast iron stove developed by the Rural Energy Laboratory of Central Power Research Institute, Bangalore, India
|1. Group Photo|
|2. Introductions Day 1||3. Ken Preparing Fuel|
|4. Nordica and Lutfiyah installing emissions equipment||5. Nordica, David, Chris, Damon at Hood Test|
|6. Pot and Test equipment||7. Outside Smoke Chamber for Instruments|
|8. Instruments in Chamber||9. Ken Feeding Stove with Damon and Steve Monitoring Results|
|10. Larry, Mouhsine and Lutfiyah Discuss Fundamentals||11. Mouhsine and Larry Modifying Honduran (TWP) Ceramic Rocket|
|12. TWP "Ecolenca, Ceramic Rocket, With Insulation||13. Mouhsine, Dean, Nate Catching Up|
|14. ___, Nate and Paul Assembling the TLUD||15. ____, ___ and David|
|16. Steve and Nate||17. Tami Contemplating Results|
|18. The TWP Ceramic Stove with Test pot||19. Clay Creations|
|20. The Data logger||21. Dale Leads Seminar|
|22. David and Lutfiyah testing Ethiopian Concrete Rocket Stove||23. Nate Discusses Safety|
|24. Mouhsine tries On Safety Hood in Test Kitchen||25. Test Kitchen|
|26. Nordica and Dean Discuss Ventilation Test Results||27. Paul Demonstated Tetrapak RHC and CEDESOL Frame|
|28. TLUD Top Lit Updraft Assembly and Fuel Chamber||29. TLUD Mixing Throat|
|30. TLUD Gas Combustion Chamber||31. TLUD Primary Air Control|
|32. Paul With the TLUD||33. Peter Demonstrating the Perfect Gas Laws|
|34. Meeting With Cottage Grove Community||35. Cottage Grove Community Potluck|
|36. CEDESOL Bolivia RHC (Retained Heat Cooker) without top||37. Orjina's Bangladesh Stove Submitted for Development and Test|
|38. Steve Cutting Mold for Improved Orjina Mud Stove||39. Enthusiastic Participants Preparing Clay|
|40. Mouhsine Master Clay Mixer||41. Dean and Steve Packing the Mold|
|42. Dean Applies Surface Coat||43. Dean Making Finishing Touches. Note Grate|
|44. Mike Checking the Gap||45. Lutifyah's Improved Orjina Bangladesh Stove|
|ETHOS Stoves Summer Camp Report 2004, Dean Still ,September 2004|
ETHOS Fall Seminar November 2003
|ETHOS Stove Design and Testing Seminar June 2-6, 2003, Aprovecho Research Center, Oregon
|Paul Anderson||Juntos Gasifier Stoves|
|Dale Andreatta||SEA Limited|
|Tami Bond||Bond Research Group, University of Illinois Urbana Champaign|
|Chris Roden||Bond Research Group, University of Illinois Urbana Champaign|
|Jeremy Foster||Aprovecho Research Center|
|Ken Goyer||Aprovecho Research Center and AID Uganda|
|Steve Gent||Iowa State University|
|Mike Hatfield||Aprovecho Research Center|
|Nordica Hudelson||Aprovecho Research Center|
|Nate Johnson||Iowa State University|
|Damon Ogle||Aprovecho Research Center|
|David Pennise||Center for Enterpreneurship in International Health and Development ,UC Berkeley|
|Jeremy Roth||Aprovecho Research Center|
|Mouhsine Serrar||Sunsmile, Morroco|
|Dean Still||Aprovecho Research Center|
|Larry Winiarski||Aprovecho Research Center|