Do solar cookers work at high altitudes?
Yes. In fact you can cook faster at higher altitudes. Solar radiation is typically much higher at higher altitudes, due to thinner atmosphere, fewer particles (both air pollution and moisture particles) in the air that will impede, reflect, absorb and scatter sunlight. Water vapor absorbs energy and at higher altitudes humidity is usually lower. Therefore at higher altitude the food is heated up more quickly, so you gain time there. Depending on what type of food you cook (amount of moisture) or what type of pot you use, may result in a "steady state" lower temperature due to water evaporating. However the energy to the pot is higher.
Where can I buy a solar cooker?
Solar cookers may be purchased from companies in at least thirteen countries on five continents.
I'm planning to do a science project on solar cooking. What should I study?
If you're planning a science project, Solar Cooker International wants you to know that your research can help extend the world's knowledge of solar cooking and be of great help to people around the world. You should be aware that it's easy to build a high-performance solar cooker if you have access to modern materials. However, the more than a billion poor people in the world, who could really benefit from having a solar cooker, don't have access to such materials. This means that your research will be most useful if it concentrates on the simplification of cooker design or on the use of low-tech, local materials. For more information, see Topics needing research.
How are the solar ovens received in developing countries?
Please see Solar cooking in developing countries.
Can you cook for large groups with solar cookers?
Of course! It may just take a wee bit longer than a conventional oven or anyother electric cooking appliance, but if you don't have the time, just have others make their own and have a large cookout. Please see Cooking for large groups.
What are the challenges faced in getting people to change the way they cook?
Myriad. However, I don't think of the work of Solar Cookers International as "getting people to change the way they cook." Our role, more appropriately, is to help build the consciousness and the practical systems to make solar cooking known, available and affordable widely throughout the world where climates are appropriate and, especially, where people are feeling a need for relief from current problems in cooking. When people are equipped with knowledge and opportunity, they can decide for themselves whether they want to solar cook.
That is not to say that we do not make efforts to explain the advantages, demonstrate the advantages and encourage people to practice, improve and make the most of their solar cookers.
That said, there are many challenges.
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