The diagram illustrates the process of cooking food using a solar box oven.
Overall, it can be seen that the oven makes use of simple materials, such as boxes, insulation, and reflective surfaces, in order to convert sunlight into heat and cook food at a relatively high temperature.
To begin with, two boxes are used in the construction of the oven, with one placed inside the other. The inner box is intended to hold the food, for instance a plate of vegetables. The space between the two boxes is then filled with insulating materials such as newspaper, grass, or sawdust, which help to retain heat.
After the insulation is set, the food is placed inside a cooking pot, covered with a glass lid, and positioned in the inner box. The oven is then exposed to direct sunlight. To maximize the absorption of solar energy, the top surface of the box is lined with foil, which reflects the sun’s rays into the pot. As a result, the temperature inside can reach as high as 82°C, which is sufficient to cook a meal.
In summary, the solar box oven relies on insulation, reflection, and solar energy to create and trap heat, allowing food to be cooked without the use of conventional fuel.