Unlike the parabolic cooker, this cooker can be left unattended and the food will not get burned.
This film shows the hot steam from the preassure cooker which is well above 120° C. This high temperature and steam preassure shortens cooking time with 50%, giving solar cooking a new flavor. By steam cooking, you can cook all kinds of vegetables or meat without loosing important vitamins and flavor to the water.
The Voukana Solar Cooker cooks from 0800 in the morning to 1600 in the afternoon in the equatorial zone. The idea is that the cooker is inclined 30 degrees from the zenith and it captures the sunlight from 30 degrees above the horizon to the zenith. This means it is operational within a 120 degree sector when adjusted azimuth during the day, and the only moving part on it is the pot.
The technically area of this cooker is about 1,3 square meters, and optimal effect on a 22cm wide and 14 cm high cooking pot is geometrically calculated to be 1200W at optimal sun angle of 60 degrees.