Cooking with sun rays

Stoves operated by heat from the sun can change the lives of people in poor countries.

Solar cookers are devices that use heat from sun rays to cook food or boil water. They have many types and operate based on the following principles:

Sunlight convergence: use highly reflective mirrors or metal - like aluminum foil - to bring light and solar radiation into a small area.

Turn light into heat thanks to a black material because black has a heat-absorbing property.

Use metals with good thermal conductivity properties to make food faster.

Keep it warm: Transparent nylon bag, glass plate or some transparent material for sunlight to pass through. When the light turns into heat, the transparent shield will not allow the heat to escape. This is the greenhouse effect to retain heat in the kitchen. The more the air inside is isolated from the outside air, the higher the performance. As a result, the stove still has a high temperature in cold or windy days.

In fact, solar cookers are a contributor to efforts to reduce poverty and protect the environment. They do not consume electricity, gas, wood, coal or any other form of fuel so people will not have to spend money on the kitchen. Each kitchen only costs about 5 USD but can operate up to two years. Solar cookers also help reduce atmospheric emissions and respiratory-related diseases.