This practice entails keeping the fruit-farm cooled through water sprinkling techniques. It is based on three application systems:
- convective cooling: obtained through the application of miniscule drops of water in the fruit-farm (mist), known as a “fogging system”; since the droplets are subject to both solar radiation and air temperatures, they take the heat from the atmosphere, turning into a gaseous state, and lowering the temperature;
- hydro cooling: obtained by applying water directly to the plants using over-tree irrigation; there is no transfer of state, but the water, in the liquid state, is in constant contact with the plants and in any case capable of removing heat, raising its own temperature before falling to the ground;
- evaporative cooling: obtained by applying water to the plants; unlike the previous system, the water takes sensitive heat from the plant to then change from the liquid state to the gaseous state (latent heat).
Fruit-farm cooling by applying water exploits a combination of these three processes, and one is usually dominant in accordance with the systems used.
