When regular ventilation is not able to keep the greenhouse temperature at the desired level, additional cooling is needed. So farmers can use ventilation fans and evaporative cooling as an economic and easy way to remove the large amount of heat from the greenhouses.
After installing the ventilation and cooling system for the greenhouse, it will help exhaust the heat out of the house and more fresh and cool air will be introduced to the plants. What is more, the greenhouse ventilation will further control the humidity inside.
Axial exhaust fans are widely used for greenhouse ventilation.