This request was made by the president of the association DARNGH, Ali OUAUZIZ. This association aims at developing economically and socially the rural and poor areas of the region from Marrakesh to Morocco. The solar oven had to keep its first function, worth knowing to cook, but was to be able to be transformed into solar airdryer thanks to detachable parts.
What is the principle of the solar dryer?
The solar dryer allows ,as its name indicates, to dry food and keep it in a " natural " and " healthy " way. The drying is made by a heat not exceeding 60°C otherwise food cooks. However, every food possesses different time of drying according to the quantity of water which it contains. For example, a fig will be dry in less time than a tomato which contains a lot of water. The solar hairdryer possesses numerous advantages due to its construction and its use: It is easy to build ; it requires simple and little expensive materials (wood, laminated) ; it is economic and autonomous because it requires only the presence of the sun ; it is simple of uflisafon ;it is adaptable to the oven ;it is neither cumbersome, nor heavy
The stages of the construction:
We thought first of all about plans which allowed the adaptation of the hairdryer to a solar oven. Helped then by a volunteer close to the foundation Dar Bellarj in Morocco, further to the discussions with the volunteers of the association Bolivia Inti and our companions, we completed these plans which allowed us to arrive at the final idea rather quickly. For that, we had to make modifications on the solar oven. Indeed, it was necessary that of the air can circulate, that's why we created openings on the top and the bottomof the oven with an adaptable system established by a wire netting.
It was then necessary to begin the construction and to find materials. We chose some wood and the plywood for the manufacturing of the structure of the dryer. We built the box with several railings inside where we can put food as well as a door to open if needed and to have access to food.
It was also necessary to plan an air outlet at the top of the structure. For it we left an opening protected by a fine and adjustable wire netting to regulate the air outlet according to the needs.