Cooking meals with the sun for fuel
[ 2006-08-21 10:33 ]
I'm Gwen Outen with the VOA Special English Development Report.
Millions of people around the world cook their food over a smoky fire every
day. It is often difficult to find wood for the fire. People who do not have
wood must spend large amounts of money on cooking fuel. However, there is a much
easier way to cook food using energy from the sun.
Solar cookers, or ovens, have
been used for centuries. A Swiss scientist made the first solar oven in
seventeen sixty-seven. Today, people are using solar cookers in many countries
around the world. People use solar ovens to cook food and to heat drinking water
to kill bacteria and other harmful organisms.
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| Panel cooker | There are
three kinds of solar ovens. The first is a box cooker. It is
designed with a special wall that shines or reflects sunlight into the box. Heat
gets trapped under a piece of glass or plastic covering the top of the cooker. A
box oven is effective for slow cooking of large amounts of food.
The second kind of solar oven is a panel cooker. It includes
several flat walls, or panels, that directly reflect the sun's light onto the
food. The food is inside a separate container of plastic or glass that traps
heat energy. People can build panel cookers quickly and with very few supplies.
They do not cost much. In Kenya, for example, panel cookers are being manufactur
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| Box cooker | ed for just two
dollars.
The third kind of solar oven is a parabolic
cooker. It has rounded walls that aim sunlight directly into the
bottom of the oven. Food cooks quickly in parabolic ovens. However, these
cookers are hard to make. They must be re-
aimed often to follow the sun.
Parabolic cookers can also cause burns and eye injuries if they are not used
correctly.
You can make solar ovens from boxes or heavy paper. They will not catch fire.
Paper burns at two hundred thirty-two degrees Celsius. A solar cooker never gets
that hot. Solar ovens cook food at low temperatures over long periods of time.
This permits people to leave food to cook while they do other things.
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| Parabolic cooker | To learn
more about solar cooking, you can write to Solar Cookers International. The
address is nineteen nineteen Twenty-First Street, Sacramento, California,
nine-five-eight-one-four, USA. Or you can visit the group's Internet Web site.
The address is w-w-w-dot-s-o-l-a-r-c-o-o-k-i-n-g-dot-o-r-g.
(www.solarcooking.org).
VOA Special English Development Report was written by Jill Moss. I'm Gwen
Outen.
cooker : one that
cooks（炊具）
parabolic: of or having the form of a parabola
or paraboloid（拋物線或拋物面的）
（來(lái)源：VOA
英語(yǔ)點(diǎn)津姍姍編輯）
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