HOW TO PROTECT YOUR ORCHARDS,
VEGETABLES AND VINEYARDS AGAINST FROST

In the daytime
The sun heats up the soil and plants, which accumulate heat, which in turn warms up the air.
The amount of thermic energy is all the higher as the soil is humid, bare and unploughed.
Under these conditions, the best conductivity is obtained for the soil to store up heat.

Spring frost at night
In the night-time, freezing is caused by a sharp drop in temperatures, as the heat is reflected from the soil.
The drop goes on throughout the night, thus the air layers around the plants often reach temperatures below 0° Celsius (32° F).

Those cold layers are denser and slowly go down the slopes to reach the lowest parts of the grounds, where they accumulate, and where the most severe damage is to be observed. About 15 metres (50 ft) above the ground, the temperature is that attained during the day, whereas there is a drop at ground level.
Thus there is a difference in temperatures, the warmer being 15 metres above the ground, and the colder being at ground level (that is around the plants).
This is the phenomenon known as temperature inversion (or "thermic roof"), which makes the use of our anti-frost tower both absolutely necessary and efficient.

How it works
The air is sucked from the warmer layers and spread down by the propeller, which allows to be mixed with the colder air at ground level, thus causing a rise in the temperature around the plants.
This rise is all the higher as the temperature inversion is important.