How to make a solar cooker
Transcript of How to make a solar cooker
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HOW TO MAKE A SOLAR COOKER?
Comenius team
Shpogy Secondary school
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SOLAR COOKERA solar cooker uses the energy of the Sun to cook food. An essential part of the cooker is a reflector- a shiny surface that reflects and concentrates the Sun’s energy. They usually have parabolic shape, the size may differ.
VERY BIG RATHER SMALL
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DIFFERENT TYPES OF SOLAR COOKER
• Three broad categories:• box cookers;• panel cookers;• reflector cookers.
the box cooker first built by Horace de Saussure in 1767; Reach temperature 90–150 °C
focus light on a cooking container reach temperatures of 315 °C and above
these are in use in Refugee camps around the world
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LATVIAN SOLAR COOKER• To make a solar cooker we need a shiny surface to reflect
and concentrate the Sun’s energy
• We took a bowl:
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LATVIAN SOLAR COOKER• We have few sunny days in winter. And the days are
pretty short that is the reason why we could not make a real solar cooker by using solar power.
• As an alternative, we took a lamp:
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LATVIAN SOLAR COOKEROur first experiment, we did not cook food, but we tried to
melt a candle
In 40 minutes (after a lesson) we saw that the candle had
melted
BEFORE:
AFTER:
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LATVIAN SOLAR COOKER• The we wanted to try to melt something edible
CHOCOLATE:
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LATVIAN SOLAR COOKER• It was like:
«Has the chocolate melted?
Can we use it for decorating
the cake?»
• The aim was to have fun
and learn something new!
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LATVIAN SOLAR COOKER
Science teachers
Mr.Švarcs and
Mr. Suveizda advised us to use a convex mirror to collect the light.
• Convex mirror
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LATVIAN SOLAR COOKER
• As it was not a sunny day, we used a lamp, AGAIN
And we tried to find focus. We found it but it would take a lot of time to wait until the paper starts burning
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LATVIAN SOLAR COOKER• Science teachers were mocking at us: «When your
cooker is ready, invite us to a barbecue party»
THIS : INSTEAD OF THIS:
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LATVIAN SOLAR COOKER• In spring we will make a solar cooker by using solar
energy and not a lamp.
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COMENIUS TEAM. The part of the team
Karīna,Laura and Jānis who are now in DramaAnd teachers Eva and Guna you probably remember