1. Designing a Solar Cooker
Physics Project
Designing a Solar Cooker
Group members:
Annabelle Lam (16)
Winnie Lam (17)
Fiona Lam (18)
Yvonne Lee (19)
Carrie Leung (20)

2. Introduction .. Objectives:
build our own solar cooker and use it to cook sausages / fish balls.
Background information:
---make use of the solar energy to cook food.
---to make the solar box collect as much as solar energy.
---keep the temperature inside high by reducing the energy loss to surroundings.

3. Materials and tools .. ---Cardboard box ---Aluminium foil
---Black poster colour for filling the colour of the box
---Plastic sheets
---Glue/Sticky tape
---Cutter
---Scissors
---Thick cardboard
---Can

4. Diagrams .. Side view: 4 pieces of aluminium foil (with dull surface)
Top view: Cardboard (black in colour)
2 pieces of plastic sheet
A piece of aluminium foil for reflection

5. Outside of the cooker : Reasons for Choosing the Above Materials
In Our Design
Outside of the cooker :
---Black in colour →good absorber of radiation
　and heat → more heat can be absorbed
---Transparent plastic sheets → allow heat to
　penetrate → prevent heat from escaping
---Most are aluminium foil → conductor → conduct as much heat
---Cardboard (wrapped by aluminium foil) → support the set-up
---HOUSE in shape → special design for trapping heat inside

6. Inner part of the cooker:
Continue ..
Inner part of the cooker:
Wrapped by aluminium foil (silver and shiny surface)
---reflect heat in the cooker → prevent heat from escaping
Metal can to place the food
---Trap more heat to cook the food
  ---Conductor → conduct as much heat to the food
Bottom part of the cooker:
Aluminium foil
Inner surface: shiny and silver → ensure the circulation of heat
→ locking heat inside
Outer surface:
painted black → good absorber of radiation and heat → more heat can be absorbed

7. End