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Exploring Alternative Ways of Cooking for Developing Countries

Exploring Alternative Ways of Cooking for Developing Countries. A Presentation by Team 4 Nick Spadaccini Rachel Schartner Kris Diedrick Alyssa Fiorenza. What is the purpose?. Recognition of Needs and Requirements

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Exploring Alternative Ways of Cooking for Developing Countries

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  1. Exploring Alternative Ways of Cooking for Developing Countries A Presentation by Team 4 Nick Spadaccini Rachel Schartner Kris Diedrick Alyssa Fiorenza

  2. What is the purpose? Recognition of Needs and Requirements • Most populations of developing countries like Kenya are living at or below the poverty line – unable to afford basic necessities such as an efficient way to cook their food Kenyan women and girls normally use the main part of the day preparing a meal for the family, using traditional wood fires which are becoming obsolete in an age of dwindling resources such as firewood. A proposal of new alternatives is needed to address dwindling resources among other needs: Safety – the solution should be nontoxic and relatively safer than open fires Emissions – a way to decrease emissions should be considered, since burning fuel is costly and dangerous for the environment Cooking time – for developing countries, time is key- a woman should not have to dedicate most of her day to meal preparation Cost – The economy of these countries only allows the solution to be made available to be purchased for about $2

  3. The ceramic Jiko, which uses charcoal, a popular stove used in Kenya Considered Options Option A RachaelOption B AlyssaOption C KrisOption D Nick

  4. Option A A solar cooker with a simple bowl and bag design The cooker would consist of a light weight metal bowl with reflective material on the inside which will direct sunlight and conduct heat. The bowl will be surrounded with a translucent heavy duty plastic bag which will trap sunlight and heat like a greenhouse.

  5. Option B A cooker similar to a portable grill The grill will have several components: A series of metallic panels to direct sunlight; these panels can be compacted into one panel by sliding them to allow for portability A dark metal base in which charcoal can be placed if it is available A raised grate to keep food off of the base to allow for potential fuel use A translucent cover which can be placed onto the panels to trap heat

  6. Option C A cooker similar to a stove utilizing a crank generator The option is box shaped – food will be placed inside and a door can be shut to trap heat which will be generated by an electric or crank generator Heat will be spread throughout heating coils which will be placed within the cavity of the box underneath and surrounding the food. The generator will be powered either by electricity if available, or through manual labor, either by a hand crank (pictured here) or a foot pedal. Battery power can also be utilized, offering multiple methods of power due to availability.

  7. Option D A solar cooker that uses a lens as a heat source. Lens is used to concentrate heat from the sun to one area to heat the food, increasing the heat available. The strong lens can be configured to maximize the heat concentrated. Includes insulated container for food, lens, and door to add food.

  8. Concept Option AnalysisThe Selection Matrix The outcome of the matrix has encouraged us to combine the best aspects of each option. Option A Simplistic design will minimize cost and materials Option B Combines portability, solar power, and potential fuel use Option C Manual generator will supplement solar cooking Option D Intensifies solar power by integrating a lens into the plastic cover

  9. The Final Proposal Our final solution combines solar energy, and manual energy. A reflective metallic bowl with a curved design to trap heat will be placed inside a dark metallic box which will contain a generator and heat coils in a closed cavity of the box. The bowl will be able to be removed for easy portability. The cover will be made of a durable plastic and bent in a way which will mimic a lens. The lens will bend light to a small extent and some rays will be focused onto the food at the bottom of the bowl. The generator can be powered by a hand crank (as pictured) or by a foot pedal.

  10. The Components The bowl will be made out an aluminum alloy, which will be lightweight, inexpensive, and reflective. The curve of the bowl will allow for light and heat to enter and become trapped. The base will be the house of the heat coils and generator. The inside will be sealed off, to avoid heat escape and shaped to cradle the bowl when it is placed inside. It will be made of a dark metal alloy in order to absorb heat from the sun which does not directly hit the inside of the bowl. The cover will be made of plastic, and shaped to mimic a lens to direct light into the bowl with a 2 inch focal point to increase energy.

  11. 5052 Aluminum Alloy and Plastic • 5052 Aluminum • Not heat treatable, but stronger than most alloys • Corrosion resistant • Can be welded • Chemistry Aluminum (Al) 95.7 - 97.7% Chromium (Cr) 0.15 - 0.35% Copper (Cu) 0.1% max Iron (Fe) 0.4% max Magnesium (Mg) 2.2 - 2.8% Manganese (Mn) 0.1% max Silicon (Si) 0.25% max • $.0124 per square inch • $5.22 for box and bowl • Acrylic Plastic • Lightweight, rigid, and weather-resistant thermoplastic • Half the weight of glass and 43% the weight of aluminum • Can be used at temperatures between -30°F up to 160°F • Transparent, 92% light transmitted • $.0148 per square inch • $.09 for lens

  12. Magnifying Lens Increase in Energy---Cost Analysis • area of lens (lid) = (diameter2 × π)/4=50.24 square inches • area of a focal point = 22π /4 = 3.14 square inches • increase in energy = 50.24/3.14 = 16 times more energy with lens’ focal point

  13. A System Diagram Light and heat energy will enter through the top of the bowl and be absorbed by the dark exterior of the base. Heat escape will be hindered by the cover. The currents running through the coils will heat them, supplementing the heat provided by solar energy, thus decreasing the time needed to cook food. The bowl will reflect and trap heat inside, raising the interior temperature of the bowl to cooking standards. A crank generator will provide an electrical current to run through coils of wire, located inside the base. The cooker is sustainable because it is powered by regenerative resources; energy from the sun and magnetic flux.

  14. Parts Diameter 7.9 inches at widest point 8x8x8 inches Aluminum Bowl Acrylic Lid 7.9 inches diameter Aluminum Box with hand crank generator and coils inside

  15. Final Cook Stove

  16. References Pictures http://images3.nocookie.net/solarcooking/images/thmb/b/be/food_versus_charcoal.jpg/ http://zested.files.wordpress.com/209/10/womancooking.jpg/ Other Info: http://www.onlinemetals.com/merchant.cfm?pid=17922&step=4&showunits=inches&id=240&top_cat=60 http://www.robotroom.com/Solar-Soldering.html

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