The maximum temperature inside the pressure cooker is around 125° C, which corresponds to a pressure of 1.3 kg/cm2. The maximum thermal power available is about

2.3 kWTH with the system global efficiency of 60%. The thermal storage system based

FIG. 9 Front view of 360 mirrors and the oil storage container

STERILIZATION

As mentioned, the oven may be used for sterilization of medical instrumental because it is possible to make the 8 liter commercial pressure cooker reach more than 120°. FIG. 10 and 11 shows this. The sterilization cycle consists on 30 minutes at 120° C applied and then 15 minutes for dehydration followed by 15 minutes of cooling for the objects.

COOKING MEALS

This system may cook the Mexican rural people diet basis which consist on beans, corn and coffee; it means, due the high energy needs for cooking such meal, that its practically possible to cook anything that fits inside the commercial pressure cooker, FIG. 12 shows the fact. The capacity of the pressure cooker provides enough amount of meal for 8 adults a day. Unfortunately, it is still required to cook under sunlight when fried meals are desired.

At this time, it has been started a program whose purpose is to determine cooking times for several kind of typical Mexican food for different regions in the country, this will allow to have a list of recipes with its own solar cooking times.