Wet pad is economical and effective way to cool down the temperature by evaporation theory

 

Wet pads and fan cooling system:

The system works according to the evaporation theory, the pump sprinkles water to the paper pads and at the same time the hot air outside is pumped in to the pads by the fans; When the water evaporating from the pads, it will cool down the temperature in the greenhouse. It is an economical and effective way to cool down the temperature.