Financed by a BMZ project (German Ministry for Technical and Economic Co-operation), five solar community bakeries were built in villages in the Argentinean portion of the Altiplano basin. The aim was to replace the use of tola bushes as the heat source in traditional ovens. Each family bakes its bread one time per week in its own adobe oven, using in average 30 kg of tola. Due to the extreme arid climatic conditions and growing population, the impact of firewood collection is becoming more visible. To protect the sparse vegetation, a community solar bakery oven was developed, using a fixed focus Scheffler reflector with 8 m² reflector area. The oven has a volume of about 200 liters. With an input power of about 3 kW it reaches temperatures of up to 350 °C. Alternatively the oven can be moved aside on rails and permits its use as a cooking plate.
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