A system was conceived, realized and tested for solar cooking purpose. It has a spherical shape reflector as concentrator, mounted on two frames for a better orientation towards the sun. The engineering of the system makes it able to reach theoretical geometrical mean concentration of 720 and a theoretical efficiency of 0.42. Thus, the system is easy to manipulate since only the azimuth angle is tracked. An optional rocking of the reflector also allows the system to be used in equatorial and tropical zones when the sun goes closer to the zenith. Series of tests were conducted around November 20th, in Ouagadougou, Burkina Faso with a latitude angle of . Experiments on oil in a pot allowed it to reach successively a maximum temperature of at 1:00pm the first day and at 1:30pm the second day. Boiled sweet potatoes, fried sweet potatoes, spaghetti and fish dishes were cooked in a reasonable amount of time and ready for lunch. Water tests were also conducted around March 14th following the protocol, and allowing comparison with other systems. In conclusion, experiments were taken without rocking the system and by only tracking the azimuth angle. The water result gives convincing outcomes in comparison with other concentrating cooking systems. Most of all, sub-Saharan users will not have to change their habits: the system, by always concentrating, is less constricting for tracking the sun and less time consuming to manipulate. Finding the focal point and eye safety issues shall be addressed, but overall indicators, including financial one, give more credit for the system to be implemented in sub-Saharan region.

中文翻译：

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在布基纳法索使用球形反射器建造的太阳灶的构思、实现和测试

一个用于太阳能烹饪目的的系统被构思、实现和测试。它有一个球形反射器作为聚光器，安装在两个框架上，以便更好地朝向太阳。该系统的工程设计使其能够达到理论几何平均浓度720和理论效率0.42。因此，该系统易于操作，因为仅跟踪方位角。当太阳接近天顶时，可选的反射器摇摆还允许该系统在赤道和热带地区使用。系列测试于11月20日左右在布基纳法索瓦加杜古进行，纬度角为。对锅中的油进行实验，使其连续在第一天下午1:00和第二天下午1:30达到最高温度。煮红薯、炸红薯、意大利面和鱼菜都在合理的时间内煮熟，准备午餐。还按照协议于 3 月 14 日左右进行了水质测试，并与其他系统进行了比较。总之，实验是在不摇动系统且仅跟踪方位角的情况下进行的。与其他集中烹饪系统相比，水的结果给出了令人信服的结果。最重要的是，撒哈拉以南地区的用户不必改变他们的习惯：该系统通过始终集中精力，跟踪太阳的限制更少，操作所需的时间也更少。应解决寻找焦点和眼睛安全问题，但包括财务指标在内的总体指标对在撒哈拉以南地区实施的系统给予更多信任。