{"id":1311,"date":"2023-02-23T17:00:14","date_gmt":"2023-02-23T16:00:14","guid":{"rendered":"https:\/\/www.aidwindmachine.com\/gelate\/"},"modified":"2023-06-27T17:26:52","modified_gmt":"2023-06-27T15:26:52","slug":"frosts","status":"publish","type":"page","link":"https:\/\/www.aidwindmachine.com\/en\/frosts\/","title":{"rendered":"Frosts"},"content":{"rendered":"

A phenomenon that causes millions of euros of damage every year.
\nProtect your fields and your hard work.<\/h2><\/div><\/div><\/div>

What are \u2018frosts\u2019\u200b<\/h4><\/div>

Frosts are cold weather conditions that occur when the temperature drops below zero. Despite their relatively short life span, they can also cause permanent damage to the organic material. Studies affirm that frosts represent the main cause of loss of income for farms (Snyder, 2005).<\/p>\n<\/div><\/div><\/div>

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The damage they cause\u200b<\/h4><\/div>

In sensitive perennial crops such as vines, fruit trees, kiwis, pistachios and horticultural crops, the fruits suffer irreversible injuries, with damage varying according to the temperature and duration of frost. The most harmful ones occur in spring but climate change is widening this window of time.<\/p>\n<\/div><\/div><\/div>

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Loss of production up to 100%\u200b<\/h4><\/div>

We encounter increasingly precocious blossoming, already in March or even in February, thus having to face frequent thermal changes and rapid drops in temperature below zero. The damage of frosts to blooms can be devastating: the loss can reach up to 100% of the production.<\/p>\n<\/div><\/div><\/div>

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How do the anti-frost wind machines work<\/h2><\/div><\/div><\/div>
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Causes<\/h4><\/div>

The main phenomena that generate frosts are advection, evaporation and irradiation. In frosts due to irradiation, the sun heats the soil and the plants, which then become warmer than air. At night, the accumulated heat rises and remains trapped in a layer of air at 15-18 meters from the ground, forming \u2018the inversion layer\u2019 and a rapid drop in temperature.<\/p>\n<\/div><\/div><\/div>

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Solution<\/h4><\/div>

AID anti-frost wind machines draw the warmer air present in inversion layer and mix it with the colder air surrounding the plants and soil, thus producing a heat transfer by forced convection from top to bottom and resulting in an increase in temperature of the underlying area – and therefore of the leaves, fruits and flowers – estimated around 50-60% of the inversion layers.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

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The protected surface<\/h5><\/div>

It is not circular but ovoid, depending on the direction and intensity of the night breeze and the slope of the ground.<\/p>\n<\/div><\/div><\/div>

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Possible variations<\/h5><\/div>

The protected surface may vary depending on the breeze that often varies in direction, even during the same frost.<\/p>\n<\/div><\/div><\/div>

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Measures of protection<\/h5><\/div>

The protected ovoid surface is about 2\/3 along the direction of the breeze and 1\/3 against the breeze, depending also on the slope of the ground.<\/p>\n<\/div><\/div><\/div>

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The efficiency of the machine<\/h5><\/div>

The effect is felt from 20 to 100 m. (in some cases up to 200 m.) gradually reducing until it is cancelled, depending on the efficiency of the propeller and the power of the engine.<\/p>\n<\/div><\/div><\/div>

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The wind produced<\/h5><\/div>

The machine is able to produce a wind force with a higher speed than that of the breeze (about 9 m\/s), thus obtaining maximum protection.<\/p>\n<\/div><\/div><\/div>

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Multiple Installations<\/h5><\/div>

When you install multiple machines, the spacing of their range of action will ensure a uniform protection.<\/p>\n<\/div><\/div><\/div>

<\/div><\/div><\/div><\/div><\/div><\/div>\n<\/div>
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