How do greenhouses cool down in hot weather?
We all know that in the hot world, plants will occur pests and diseases, and growth will be hindered, so if the temperature in the polytunnel greenhouse is too high, what measures should we take to reduce the temperature in the polytunnel greenhouse?
1. Shade and cool down
This is now one of the most commonly used cooling methods in the polytunnel greenhouse, through the sunshade net can block a lot of sunlight, protect crops from sunlight burns, so as to achieve the purpose of normal growth.
2. Wet curtain cooling system
This is one of the most common ways to reduce the temperature of a polytunnel greenhouse. It involves using water to absorb heat from the air, effectively cooling the polytunnel greenhouse environment. In the cooling system, the exhaust fan draws air through a wet pad placed on the side of the greenhouse. As the air passes through the gasket, the water evaporates, cooling the air before it enters the greenhouse.
3. Mechanical ventilation
Mechanical ventilation involves the use of fans to control the air flow in and out of the greenhouse, maintaining a cooler internal environment.
Exhaust fan: The exhaust fan is placed on one side of the greenhouse to expel the hot air, while the cold air is drawn through the vent on the other side.
Circulating fans: These fans help distribute air evenly within the greenhouse, preventing hot spots and ensuring an even temperature.
4. Air conditioning equipment
Air conditioning can also be placed in polytunnel greenhouses and the cooling effect is good, but the cost of air conditioning is very high, so few air conditioning systems are used as greenhouse temperature control systems.
5. Spray the roof with cooling spray
6. Natural ventilation
By opening the ventilation window, the outside air is exchanged with the indoor air, so as to achieve the cooling effect.
