Is it necessary to install a fan and water curtain ventilation and cooling system in the construction of multi-storey greenhouses?
Is it necessary to install a fan and water curtain ventilation and cooling system in the construction of multi-storey greenhouses?
Fan water curtain (also called water curtain) ventilation and cooling system, its main system accessories for axial flow fan, wet curtain paper, circulating water pump, water supply and return pipe, filter, valve, tee, plug. Because the cooling system of the wet curtain fan is simple, the investment is small, the operating cost is low, and the cooling load capacity is large, it is widely promoted and applied in agricultural greenhouses.
The fan and the wet curtain (also called the water curtain) are respectively installed on the two facades of the greenhouse. When the outdoor hot air is sucked by the fan into the wet curtain paper covered with cooling water, the cooling water is converted from liquid to gaseous water molecules, absorbing a large amount of heat energy in the air so that the air temperature drops rapidly. After mixing with the indoor hot air, the negative pressure fan is discharged to the outside. When the wet curtain fan cooling system is running, the low temperature air after evaporation and cooling will be continuously introduced into the room for cooling.
Even glass greenhouses and even film greenhouses are equipped with natural ventilation Windows on the top and around, but this is natural ventilation, and in the summer, it can only ensure that the air exchange with the outside can not be cooled. The real greenhouse cooling still needs the coordination of water curtain to achieve the purpose of cooling, so the greenhouse in order to ventilate and cool, it must be configured with fan water curtain system.
