Solar cooking for everyone
In the making of the Voukana Solar Cooker, I was using the same team that made the Deep Double Funnel Cooker in 2009. They started out with paper models and already after second try; the result seemed to be quite satisfactory. The only thing I still am waiting for is some good reflection materials that have some durability in tropical climate. Her smaller brother, the patented Kolamba Solar Cooker is meant for a family of two – six people, but the Voukana Solar Cooker can cook for up to 20 people.
The Voukana Solar Cooker is an efficient cooker, even compared to wood-stove and coal stoves. We are often used to wait for hours to have our solar cooked meal. This is fine when everything is well planned and cooking can start in the morning. But often african woman does not have food in the fridge, and have to go to the market to buy food each day.
Finding and cutting wood can also be time-consuming in many places. That means preparation can often not start before noon. With the Voukana Solar Cooker this is not a problem.
The african girl on the picture, Sara, has boiling water within 8 minutes, without even starting to search for wood or coal. Before her African sister has even started to cook, she is almost finished with her meal, thanks to instant solar heat and no time spent finding wood or arranging the fire place.
If cooking in a big pot for a community of ten people or more, it may still take hours to prepare the food, but the food can be left unattended.
I tried to sterilize water in a normal 10l PET bottle and did not have to wait long before the thermometer showed 75 C.
As you can see from the picture, there are no other moving parts (other than the casserole), it only has to be adjusted azimuth with the sun to be effective. Max effect is calculated to be1200 W directly on the cooking pot.
The size of the Voukana Solar Cooker is not meant for mobile transport, at least not yet. It is meant to be installed outside in specific place and is intended for families in villages with plenty of space. The model can for now only be produced locally, thus also giving work-places and important capacity to the local community. It is made from 6m2 of metal plates and its weight is about 10 kg.
See also the video, where we have been using a preassure cooker with Voukana Solar Cooker !