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Kenya Design Project

Mike Belfiglio, Steve Toth, Beverly Wilkes EDSGN 100.001 Team 8. Kenya Design Project. Topic. Slide Number. What do we need to create? What does the customer need? What the design should do Concept Generation Concepts Selection of Concepts Improved Jiko Cost Analysis

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Kenya Design Project

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  1. Mike Belfiglio, Steve Toth, Beverly Wilkes EDSGN 100.001 Team 8 Kenya Design Project

  2. Topic Slide Number • What do we need to create? • What does the customer need? • What the design should do • Concept Generation • Concepts • Selection of Concepts • Improved Jiko • Cost Analysis • Summing Things up • 3 • 4 • 5 • 6 • 7-10 • 11-12 • 13-14 • 15 • 16 Table of Contents

  3. A stove capable of reducing emissions, fuel use, and cooking time, while remaining cheap enough for the poor of Sub-Saharan Africa and other poor citizens of developing nations to afford. What do we need to create?

  4. The customer needs a stove that is • Affordable • under 370 Kenyan Shillings ($5) • Small • Durable • Will last at least 2 years before replaced • Cooks faster than current methods • Three stone fire What does the customer need?

  5. Our stove should Cook in 50% less time than traditional cooking methods Produce 50% less pollutants than traditional cooking methods Consume 50% less fuel than traditional cooking methods Cost under 370 Kenyan Shillings ($5) Be able to last for 4 years of daily use. The design should…

  6. Solar Cooker Gasifier Stove Jiko-type Stove Propane Cooker Small Electric Stove Concept Generation

  7. Made of Ceramic or Steel Uses Biomass Fuel Creates Very High Cooking Temperatures with a charcoal byproduct Multiple Pieces, Complicated Assembly Longer Production Time Higher Cost GASIFIER Stove

  8. Solar cooker • Easy to manufacture • Low cost • No pollutants • Material Costs would be high for a quality cooker • Only efficient with sunlight • Most likely a long cooking time

  9. PROPANE Stove • Very high cooking temp. with efficient combustion • Easy to light and cook on • Greatly reduces cooking time • Propane is harder to get than other materials • Would be more expensive and complex • Would not be easy to produce and distribute to those in the rural areas

  10. SMALL Electric Stove • No emissions • No fuel use (excluding electricity) • No fuel gathering • Quick cooking time • Unaffordable • Barely anyone would have electricity • Considered a luxury • Only urban areas could use this cooker

  11. Concept Selection Weighted Design Matrix

  12. Weighted matrix Analysis

  13. Low cost, relatively low cooking time, low fuel usage, and has a wide range fuel types. • It’s in high demand and the people would have an easy time adjusting to a new design of a stove they have used, rather than learning how to use a totally new cooker. • Easy assembly compared to gas/electric/solar cookers • Simple design will ensure customers will not hesitate when buying • The new jiko would have thinner walls in non-heat affected areas. • Thinner walls would Limit the amount of steel in the design • It would be lighter and more portable • Less pricy due to minimal steel used • A high quality clay/ceramic insert would contain heat better than clay found in nature. Increasing the cooking temperature, therefore decreasing cooking time. • Closing “ash door” on old jikos would be eliminated. Ashes don’t seem to be that large of a hazard considering they drop below the jiko and away from the cooking food. Eliminating the door would allow less steel to be used and less parts to be added to the design; making production time and cost decrease Improved Jiko Stove

  14. Improved jiko Stove

  15. Material Costs • Steel 112.13 ksh • Clay 186.88 ksh • Labor Costs • Fabrication 30 ksh • Assembly 30 ksh Total:359.01 ksh$4.78 dollars Cost Analysis

  16. We chose to go with an improved design of the jiko for a number of reasons. • It is already widely used by citizens and culturally accepted. • Cheaper and more efficient. • Citizens lack the resources to be able to use gas and electric stoves. • Very advanced stoves are costly and difficult to assemble/produce. • Take into account that these stoves are meant for poor/marginalized citizens in developing countries. • Major changes: Thinner steel walls in non-heat affected areas, high quality clay/ceramic insert, The elimination of useless metal support and difficult moving parts. Overall, the positives of redesigning the Jiko-type stove outweighed the negatives of making a complicated stove. The Jiko has all of the qualities to be a perfect “third-world stove”, and will careful manipulation can be made more efficient and obtainable for those in developing nations. Summing things up…

  17. Shell http://www.engr.psu.edu/ed/design_projects/fa09 http://www.envirofit.org/?q=our-products/clean-cookstoves http://en.wikipedia.org/wiki/Kenya http://www.edp.psu.edu/design_projects/edsgn100/fa09/materials.html#materials http://kammen.berkeley.edu//cookstoves.html http://www.bioenergylists.org/stoves?page=5 http://ces.iisc.ernet.in/energy/paper/tech101/jikostove.html http://www.solarcookers.org/basics/how.html Acknowledgments and References

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