The cost of the oven is 375 €.

Investigations have been made in order to compare the cost of the oven to the cost of wood the butcher can save.

We considered the case of one butcher who roasts two muttons a day in a traditional oven (see Fig. 8)

The amount of wood he should burn is 5. 48 € per day. In 69 days he will spend the equivalent of a solar oven cost.

More generally the following table compares daily expenses of wood consumption with gas, coal and oil for cooking.

5.

The prototype of solar oven described in this article has been presented to some butchers of the city. They have been very interested by the device. However they find that the cost of the oven is too high and also its capacity is small (only two muttons at the same time for a cooking duration of 3 to 4 hours).

But as mentioned in the introduction, Niger is facing severe desertification, so, solar energy instead of firewood utilization for cooking is worthwhile, in despite of the costs of solar equipment.

As matter of fact, the government has adopted recently a National Plan of Action and Strategy for Renewable Energies. Theses energies (mainly solar) would play during the next decades an important role in National Energy balance.

Further study in that matter, will concern cost reduction, improvement of the performances and the capacity of the solar oven.

SHAPE * MERGEFORMAT