Persians and the oldest Refrigerators of mankind

Persians and the oldest Refrigerators of mankind

In the year of 400 BC, Persian engineers had mastered the technique of keeping ice in the summer in the desert. In the winter, the Persians brought ice from the nearby mountains.

The ice was stored in wells created in the middle of the desert. These ice wells, known as yakhchal, are some of the oldest refrigerators of humanity.

The snuff was also used to keep cold food without altering during hot meals. These structures look like large circular domes made of clay bricks. Some of them reached the height of 18 meters.

Underneath the house is a large underground space with a storage area. The underground area had a volume of about 500 cubic meters.

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The dome was connected to a "qanat", that is, a ventilation system that had the ability to lower the temperature to the freezing point during the summer.

In some cases, the walls of the dome were two meters thick. Moreover, they were made of a special mortar, sand, clay, egg whites, lime, goat hair and ash, all mixed in the right proportions.

The walls were resistant to the heat transfer. Thus, the interior remained cold. Also, the walls were impenetrable, which meant that ice and food could be safely stored.

Still, what happened when the ice began to melt? For such circumstances, the structure was provided with a trench, so that the water resulting from ice melting was captured and frozen again during cold deserts in the desert.

The whole structure was well thought out, despite the fact that it belonged to Antiquity.

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