How to make winter or start ski season earlier - pictures # 2
Snow is produced mainly by spraying cold water, with air blowing to transport away the emerging energy from the water, when it is freezing. Here snow guns are used.
In Östersund there are two manufacturers of this kind of equipment.
A new model is tested.
One litre of water makes around 2 litres of snow. The demand for water is high. And it has to be of high pressure. This pump delivers the water.
This snow guns is mounted on a tower. When this picture was taken at a test drive, it was not cold enough in the air and the water was to warm. Only a little snow was made, and it melted fast when reaching ground.

This is a cooling tower. Water is dripping from the top, while cool air is blowing past. The water temperature can be diminished by a few C grades, when air is cold. In the autumn air is often colder than the water.
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