solar cookers international “i’d put my money on the sun and solar energy. what a source of...
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“I’d put my money on the sun and solar energy. What a source of power! I hope we don’t have to wait ‘til oil
and coal run out before we tackle that.” Thomas Edison
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Benefits of Solar Cooking
• Generates no air pollution
• Generates no greenhouse gases
• Produces no smoke• Eliminates fire
dangers Leslie baking cakes in S. California
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More Benefits of Solar Cooking• Moving cooking
outside reduces heat buildup in home~44% of household
energy consumption in U.S. goes to heating/cooling
~5% for cooking
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More Benefits of Solar Cooking
• Cooks foods slowly and thoroughly
• Preserves nutrients • Foods will not burn• Pots are easy to clean; less
clean water is needed• Use for canning
vegetables• Use for dried fruit• Kill insects in dry grains
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Limitations of Solar Cooking
• A clear sky is optimal; cloudy days may require use of other fuel
• Lifestyle adjustments are required– Change in timing of meals and work
– Hot food storage
– Cooking outside
– Possible changes in taste & texture of food
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The basic principles - C.A.R.E.S.
• Collect the light
• Absorb the light
• Retain the heat
• Ease and Efficiency
• Safety
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Shiny reflectors capture extra sunlight
Fuel: SunlightDark surfaces converts sunlight to heat energy
Heat trap retains the heat
HOW THE COOKIT WORKS
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Approximate Cooking Times
• Estimate cooking times 2-3 times longer than conventional cooking methods, depending on:
• Distance from equator/season
• Time of day (shadow rule)
• Clouds/inclement weather
• Wind
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TYPES OF SOLAR COOKERS
Box
Parabolic
Panel
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The CooKit: A Simple but Effective Solar Cooker
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Parabolic Cooker
• Highly focused light and high temperatures• Cooks nearly as fast as a conventional oven• Costly and complicated to make and use – have to
turn frequently to follow the sun• Potentially hazardous
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Solar Cookers International (SCI)
• A non profit humanitarian organization assisting communities to use the power of the sun to cook food and pasteurize water for the benefit of people and environments
• Office in Sacramento• Project Areas:
– Community Projects and Technical Assistance– Information Exchange – Advocacy– Educational Resources
• Developed CooKit and WAPI
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Two Billion People rely on Wood for daily cooking fuel
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FACTS
• 1/3– Part of humanity cooking
over wood fires
• 1/3– Part of humanity without
safe drinking water
• 1 TON– Average amount of wood
saved per year by a solar cooker
• 50%– Lung disease deaths due
to indoor smoke from cooking
• 50,000– Daily deaths of children
from waterborne diseases
• 1.8 TONS– Amount of CO2 reduced
per year with saved wood
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Heating water to 65°C (149°F) in a solar cooker will
pasteurize the water and kill disease causing microbes
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Temperatures which kill disease microbes present in contaminated water
MICROBE KILLED RAPIDLY AT: Worms, Giardia, Entamoeba, Cryptosporidium 131°F (55°C) Escherichia coli, Shigella, cholera, 140°F (60°C) Typhoid, Rotaviruses, Polioviruses Hepatitis A virus 149°F (65°C) WAPI wax melts 149°F (65°C)
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Water Pasteurization Indicator (WAPI)
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Solar cookers for Darfur refugees:Iridimi camp in eastern Chad
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BEST REGIONS FOR SOLAR COOKING
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Solar Cookers International
1919 21st Street #203Sacramento, CA 95811, USA
Tel: [email protected]
SCI: SCI: solarcookers.org
SCInet: SCInet: solarcooking.org