Saturday, April 18, 2009

Zeer Pot Refrigerator

The dry heat of Africa makes it difficult for farmers to grow vegetables. Even more difficult, however, is the task of keeping those vegetables from rotting in the sun. The zeer pot refrigerator is a simple, inexpensive solution to this problem. It consists of an earthenware pot fit into a larger pot, with a layer of wet sand between the two. As moisture from the sand evaporates, it cools the inner pot, keeping up to 12kg of produce fresh for three weeks. For poor families in Sudan, this is the only available preservation method for their food. The ingenious clay refrigerator is the difference between starvation and having enough food to eat.
Source: Practical Action