Aluminum Foil Shading Screen Feature and Applications

The most important functions of aluminum foil shading nets are threefold: the winter heat preservation effect inside the greenhouse and the heat-resistance cooling in summer, as well as defogging and humidity adjustment.

1. Winter insulation of the greenhouse
The heat of the greenhouse in winter is absorbed and preserved by the soil, structures, crops, etc. inside the greenhouse after being irradiated by the sun’s rays during the day. The absorbed heat is released into the greenhouse at night to maintain the temperature inside the greenhouse. The heat thus formed is mostly radiated outward through the greenhouse covering materials (plastic, glass), but the aluminum foil shading net effectively prevents the heat from radiating and plays a role of heat preservation. Aluminum prevents the heat inside the greenhouse at night and reflects it back into the greenhouse. Heat exists at night in the form of the red outer line that is invisible to the naked eye, and aluminum is the best material on the earth that reflects the red outer line.
2. Heat resistance and cooling in summer
In the greenhouse during the daytime in summer, the heat projected from the outside to the sun’s rays raises the temperature to the extent that it prevents the growth of crops. At this time, cooling methods such as ventilation are limited, and such a curtain should be actively used to reflect sunlight and prevent projection, so as to reduce the temperature inside the greenhouse. The aluminum plate of the aluminum foil shading net can reflect more than 90% of the sun’s rays, fundamentally preventing most of the reflected heat from entering the greenhouse.
3. Demisting and temperature adjustment
The temperature inside the greenhouse is usually very high because of the necessary temperature balance, nutrient, and water supply for crops. Such high humidity has caused the occurrence of various fungi and pests. Especially in winter because of heat preservation, except for ventilation and ventilation, it is usually in a sealed state, so the humidity will be higher, and the temperature difference between inside and outside before sunrise will produce a lot of fog. The aluminum foil sunshade net is a structure formed by an aluminum plate and a large amount of polyester fiber to absorb a large amount of fog. The basic humidity adjustment is done through the fibers of the aluminum gap.