A solar cooker is a device which is used to cook food by utilizing the heat energy radiated by the sun. It utilizes the principle of reflection, concentration, absorption and greenhouse effect to convert sunlight to heat energy. Most common, inexpensive and easier to build A solar cooker consists of an insulated metal box or wooden box which is painted all black from inside.

1. SOLAR COOKER
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2. WHAT IS A SOLAR COOKER
 A solar cooker is a device which is used to cook food by
utilizing the heat energy radiated by the sun.
 It utilizes the principle of reflection, concentration,
absorption and greenhouse effect to convert sunlight to heat
energy.
 Most common, inexpensive and easier to build.

3.  A solar cooker consists of an insulated metal box or
wooden box which is painted all black from inside.
 There is a thick glass sheet cover over the box and a
plane mirror reflector is also attached to the box.
 The food to be cooked is put in metal containers
which are painted black from outside.
 These metal containers are then placed inside the
solar cooker box and covered with the glass sheet.
CONSTRUCTION OF SOLAR COOKER

4. STAGE 01
It is placed in sunlight and reflector is adjusted
in such a way that the strong beam of sunlight
enters the box through glass sheet.
STAGE 02
•Once the sun’s heat rays enter the box the
blackened metal surface in the wooden box absorb
the intra-red radiations from the sunlight.
STAGE 03
The more and more heat gets trapped in the
box which let to rise the temperature to 100°C.
This heat cooks the food.
WORKING OF SOLAR COOKER

5.  It do not use fuel and save
precious fuel like coal, kerosene
and LPG.
 It does not produce smoke due
to which it is pollution-free.
 In a solar cooker, food is cooked
at a comparatively lower
temperature.
 Solar cooker is freely available.
 We cannot use it at night, during the
rainy season and during foggy
winters.
 It is time-consuming as compared
to normal cookers.
 The direction of solar cooker has to
be changed from time to time to
keep it facing the sun.
 It cannot be used for baking.
ADVANTAGES DISADVANTAGES

6. APPLICATION
 It is used all around the world for purification of water
and pasteurization on a larger scale.
 In solar cooker water is heated for domestic purposes like
bathing, washing clothes or doing dishes.
 It is use for roasting of consumption items such as coffee
beans, peanuts, popcorn.
 Grain Sterilization can be accomplished in a solar cooker
to kill weevil and other bugs that may have infested the
grain.

7. THANK YOU