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Concentrator Type Cooker                      This cooker
                                              can produce a
                                              temperature of
                                              over 200 °C




 Parabolic
 Reflecting
 material is
 used to
Concentrate the Rays


                       This is the Focus point, where the
                       rays are concentrated to.
Concentrator Type Cooker
                •The sun changes position
                throughout the day so this type
                of cooker needs to track the
                sunlight.
                •The user needs to be in the sun
                at all times
                •It is good for cooking lots of
                food at the same time, e.g. in a
                hostel
Its box shape is very good
                          at Trapping Heat
This cooker can
produce a
                                    This is the
temperature of
                                    outside
150 °C
                                    reflecting lid. It
                                           Concentrates the rays.

It can also cook                                This is a
food using                                      glass lid
boiling water                                   that Traps the Heat
at100 °C
                                                and
                                              uses the greenhouse effect

                                            It has a black bottom
                                            inside that
                                             Converts light to heat energy

                   It also has reflective
                                            It has insulated sides and
                   internal walls to
                                            bottom to Trap Heat
                   concentrate the rays
•The user must
stand in the sun to
use it.

•The cooker is small
and portable so it is
easy to move to face
the sunlight.

•This type of solar cooker
is good for cooking food
using boiling water.
It has large parabolic dishes for
 use in indoor community
 kitchens.
It tracks the sun’s movement using
bike chains and a clock. It reflects
the concentrated rays onto a fixed
point.
Sometimes the
concentrated
sunlight enters a
nearby kitchen
directly to strike a
cooking pot or
frying surface.

Or sometimes it’s
used to create
steam which is
transported by
pipes to a nearby
kitchen
•Cut food into smaller pieces
                                           •Use minimum amount of water
  This increases the surface               e.g. in rice
  area of the food so that it                   this will decrease the amount
  will cook quicker.                            of time it takes to cook.



               Do not open the cooker
               for stirring as heat will
               escape

                                           The time to cook may be longer
                                           than normal. Dependent on
                                           climate and sun.
Advantages
•Solar cookers do not require fuel
•Solar cookers can be used to boil water that can then be used inside
•Concentrator cookers are useful when there are lots of meals
to be prepared at the same time

Disadvantages
•Most do not work at night
•Concentrator type cookers need to follow the sun
•Some require constant attendance while cooking.
•Most require level land
•Most are too tall for women who like to cook sitting
Energy-Efficient Solar Cookers

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Energy-Efficient Solar Cookers

  • 1. Energy & Environment This PowerPoint presentation is developed and created By:
  • 2. Concentrator Type Cooker This cooker can produce a temperature of over 200 °C Parabolic Reflecting material is used to Concentrate the Rays This is the Focus point, where the rays are concentrated to.
  • 3. Concentrator Type Cooker •The sun changes position throughout the day so this type of cooker needs to track the sunlight. •The user needs to be in the sun at all times •It is good for cooking lots of food at the same time, e.g. in a hostel
  • 4. Its box shape is very good at Trapping Heat This cooker can produce a This is the temperature of outside 150 °C reflecting lid. It Concentrates the rays. It can also cook This is a food using glass lid boiling water that Traps the Heat at100 °C and uses the greenhouse effect It has a black bottom inside that Converts light to heat energy It also has reflective It has insulated sides and internal walls to bottom to Trap Heat concentrate the rays
  • 5. •The user must stand in the sun to use it. •The cooker is small and portable so it is easy to move to face the sunlight. •This type of solar cooker is good for cooking food using boiling water.
  • 6. It has large parabolic dishes for use in indoor community kitchens. It tracks the sun’s movement using bike chains and a clock. It reflects the concentrated rays onto a fixed point.
  • 7. Sometimes the concentrated sunlight enters a nearby kitchen directly to strike a cooking pot or frying surface. Or sometimes it’s used to create steam which is transported by pipes to a nearby kitchen
  • 8. •Cut food into smaller pieces •Use minimum amount of water This increases the surface e.g. in rice area of the food so that it this will decrease the amount will cook quicker. of time it takes to cook. Do not open the cooker for stirring as heat will escape The time to cook may be longer than normal. Dependent on climate and sun.
  • 9. Advantages •Solar cookers do not require fuel •Solar cookers can be used to boil water that can then be used inside •Concentrator cookers are useful when there are lots of meals to be prepared at the same time Disadvantages •Most do not work at night •Concentrator type cookers need to follow the sun •Some require constant attendance while cooking. •Most require level land •Most are too tall for women who like to cook sitting

Hinweis der Redaktion

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  2. Solar Bakery PRINCE India-- - YouTube.mp4http://www.youtube.com/watch?v=KSqF84nOhqU