Is there a place for local manufacturing of high quality Rocket Stoves? Or Peter Scott www.burndesignlab.org peter@burndesignlab.org
Thank you! Dr Larry Winiarski
Kenya 2009 How to disseminate 400,000 cookstoves? This seems like an odd place to put this information. it makes it seem that a 3 stone fire is faster and better! I would change this entire page. Instead focus on the negatives of the traditional stove as opposed to the positives of the Jiko Poa.or focus on the positives but used a picture of the jiko Poa not the traditional fire
Focus groups were conducted in Dec 2009 and Feb 2010 6 stoves + open fire
Ethiopia Rocket Stove Project
Ethiopia Rocket Stove Project 12,000 stoves sold Retail: 9 USD Unsubsidized Challenge? Mass production of ceramics!
Feedback from Focus groups in Kenya
Wooden handles Stability -Large pot supports -Wide feet Hinged non detachable shelf One Fixed and one detachable skirt
Cost Performance? Durability? Warranty?
FOB Cost : ~18 USD Cost Retail (subsidized): 29 USD FOB Cost: ~13 USD Cost Retail (subsidized)16 USD Women in Meru report saving ~17 USD per month
Performance?
Carbon Baseline Assessment of the Envirofit G3300 and JikoPoa Improved Cookstoves in Kenya Table A1. Wood use among Envirofit and JikoPoa (1.5g/cc ceramic liner) stove users. Values in parentheses represent one standard deviation. Stove N Units Before After Change Envirofit 96 kg/hh-day 7.05 (4.48) 4.00 (2.13) 3.05 (3.77) kg/std adult-meal 0.20 (0.17) 0.12 (0.10) 0.08 (0.16) JikoPoa 98 kg/hh-day 6.75 (6.65) 3.93 (2.17) 2.82 (5.61) kg/std adult-meal 0.18 (0.15) 0.11 (0.07) 0.07 (0.14) p-values* -- kg/hh-day 0.72 0.84 0.73 kg/std adult-meal 0.51 0.48 0.76
Carbon Baseline Assessment of the Envirofit G3300 and JikoPoa Improved Cookstoves in Kenya Table A2. Charcoal use among Envirofit and JikoPoa stove (1.5g/cc ceramic liner) users. Values in parentheses represent one standard deviation. Stove N Units Before After Change Envirofit 96 kg/hh-day 0.37 (0.60) 0.18 (0.52) 0.18 (0.62) kg/std adult-meal 0.04 (0.07) 0.02 (0.05) 0.02 (0.03) JikoPoa 98 kg/hh-day 0.39 (0.77) 0.18 (0.53) 0.20 (0.91) kg/std adult-meal 0.02 (0.04) 0.00 (0.02) 0.01 (0.02) p-values* -- kg/hh-day 0.84 0.99 0.87 kg/std adult-meal 0.03 0.04 0.14
Haiti CCT results (conducted by Nexant Staff for USAID assessment) Jiko Poa with 1.2 g/cc liner liner Wood Household Stoves: Amount of Fuel Comsumed (wood) (gm) Stove Stove Tec Practi Bleu Envirofit Recho Lokal Jiko Poa Trois Pierre Fuel Type Wood Wood Wood Wood Wood Wood Test #1 1633 1412 1880 1754 1446 3304 Test #2 1493 2342 1779 2219 1810 Test #3 1737 1818 1817 2135 1687 3155 Test #4 AVERAGE Fuel Consumed (gm) 1621 1857 1825 2036 1648 3230 Std Dev 122 466 51 248 185 105 Coef Var 8% 25% 3% 12% 11% 3% Saving % (Three averae Stone) 50% 42% 43% 37% 49% 0% amount of food cooked (gm) 3536 3344 3307 3739 3483 3491
Warranty? 5 year warranty 1 year warranty
Durability???
A place for Local and offshore production Not one solution! e.g. Haiti.
Sales Last 3 months 6500 Jiko Poas sold. Currently monthly production ~2000 stoves Tooling up for ~5000 per month by year's end Target: produce 40,000 stoves in 2011. 400,000 1.5 million by 2020 Jiko Poa currently accounts for 80% of Paradigm sales
Why In-country Factory Production? Benefits No import duties or tariffs Locally manufactured replacement parts Appropriate design Support local entrepreneurs
Why now?
Local Sub Contractors Fine Engineering Limited 5,000 ft 2 factory devoted to JP production Produce own tooling Chujio Ceramics Limited Producing ceramic liners for 20 years 10,000 ft 2 factory Currently produce water filters, charcoal liners and Jiko Poa Liners
Skirt Development
Powder coating
New stove leg design
Shelf development High temp alloy wire (1250 C)
Use. Feedback from users drives design process
Design. Rapid prototype production & testing Use. Feedback from users drives design process
Design. Rapid prototype production & testing Use. Feedback from users drives design process Make. In-country mass production
Design. Rapid prototype production & testing Use. Feedback from users drives design process Make. In-country mass production
Questions? Answers? For more information please contact peter@burndesignlab.org or neil@theparadigmproject.org
100L Chimney Institutional Rocket Stove
New Briquette stove reduces consumption by 30 % as compared to existing congolese model Goma 2010
The RB5 1000 stick Curing tobacco with less wood 6. Hot flue gases enter the outer, larger diameter chimney, thus heating the air and creating a pressure drop that draws ambient air through the barn s air vents (see step 2). The Rocket Barn s unique double chimney system uses waste heat from the furnace to forcibly draw air through the barn. This increased convective flow results in a more efficient cure that also produces higher quality tobacco. Here s how it works 5. Hot flue gases enter the inner, narrow diameter chimney and then exit inside the outer, larger diameter chimney. 4. Hot flue gases pass through flue pipes. Internal gas temperatures drop from a max of 800 C at the furnace outlet to a max of 150 C at the fluepipe outlet. Surface temperatures of the flue pipes range from 0-250 C. 3. Inside the TWY furnace internal temperatures reach over 1100 C. 1. 1000 sticks of tobacco are loaded into the barn and the fire is lit 2. As the outer chimney heats up, ambient air is drawn into the barn through the air vents and over the flue pipes where it is heated. 34
Designed by Peter Scott and Dale Andreatta Rocket Food Dryer
Laboratory Testing Burn Campus 2020
Laboratory Testing Burn Campus 2020