Views: 0 Author: Site Editor Publish Time: 2024-12-07 Origin: Site
Glass greenhouses are widely used in modern protected agriculture due to their excellent light transmittance and aesthetic appearance. However, the high heat transfer coefficient of glass materials also poses severe temperature reduction challenges for greenhouses in summer. As an economical and efficient physical cooling solution, the "exhaust fan + evaporative cooling pad wall" temperature reduction system has become the preferred configuration for an increasing number of glass greenhouses.
This system consists of an evaporative cooling pad wall, exhaust fans, a water circulation system and a control device. Its working principle is as follows: exhaust fans are installed at one end of the greenhouse to forcibly extract indoor hot air, creating a negative pressure inside the greenhouse; under the action of atmospheric pressure, outdoor air enters the greenhouse through the evaporative cooling pad wall installed at the opposite end. When outdoor hot air flows through the porous surface of the cooling pad that is uniformly wetted by water, water evaporation absorbs a large amount of latent heat, reducing the air temperature by 4 to 10°C. The cooled cold air continuously enters the greenhouse, absorbs indoor heat, and is then discharged through the fans, forming a complete air circulation characterized by "inflow at one end and extraction at the opposite end".
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Heavy Hammer Exhaust Fan: The outer frame is made of hot-dip galvanized steel plate, which is sturdy, durable and has a long service life. It is installed on the side wall of the glass greenhouse and is responsible for outward air extraction and ventilation.
Evaporative Cooling Pad Wall: The outer frame is made of aluminum alloy, and the cooling pad core is of model 7090 with a brown color. It is installed together with the water circulation system on the opposite side of the exhaust fans, and is responsible for air intake, temperature reduction and humidification.
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This system can rapidly reduce the greenhouse temperature by 4 to 10°C, and the cooling range can reach 7 to 15°C under extreme conditions.
Compared with traditional mechanical air conditioning, the investment cost of this system is only 5% to 30% of that of air conditioning, and the operating cost is approximately one-tenth of that of air conditioning. It also has outstanding advantages such as energy conservation, environmental protection and convenient maintenance.
While reducing temperature, the system also has a humidification function, which creates a suitable growth environment for crops and promotes the growth rate of plants. User feedback indicates that "the cooling effect is excellent, the air is humid, and plants grow faster".
For the above reasons, the "exhaust fan + evaporative cooling pad wall" temperature reduction system has become the most economical and effective summer cooling solution for large-scale agricultural production facilities in China.
If you are planning to build or upgrade a greenhouse cooling system, feel free to contact us for customized exhaust fan and evaporative cooling pad wall solutions—we are ready to help you design an efficient and cost-effective cooling system for your project.
