Do you know the six point cooling knowledge for glass greenhouses? Follow the editor below to learn more.

1、 Wet curtain cooling

Wet curtain cooling is the process of soaking high-temperature external air through a wet curtain, humidifying and cooling it to form cold air, and then releasing it outdoors after absorbing waste heat through a control room. It mainly uses the evaporation of water to lower the temperature, as the evaporation of water requires the absorption of heat, which can take away some of the heat in the greenhouse. At the same time, start the fan to extract the hot air flow from the glass greenhouse to reduce the temperature.

2、 Natural ventilation

The method of using natural channels has three advantages: firstly, it eliminates the waste heat inside the greenhouse and reduces the temperature; The second is to eliminate excess moisture inside the greenhouse and reduce humidity; Thirdly, adjust the content of indoor air components and increase the carbon dioxide content in the air to enhance photosynthesis.

3、 External shading system

That is to say, excess sunlight is blocked in the greenhouse, forming a shadow to protect the crops inside and maintain a suitable temperature in the greenhouse. This can effectively block direct sunlight from reaching crops without affecting natural ventilation in the greenhouse. The cooling effect is better than that of internal shading, but the external shading material is required to be firm and durable, with small flexibility and anti-aging.

4、 Micro fog system

The main purpose is to spray water into the greenhouse in the form of mist particles, which quickly evaporate and remove heat from the air, and then discharge the humid air outside the greenhouse to achieve rapid cooling. At the same time, installing induced draft fans on the side of the glass greenhouse for forced ventilation and cooling can achieve the effect of temperature curtain cooling, with relatively uniform temperature and longer service life than temperature curtains.

5、 Spray white on the roof

The white reflective effect is very good. A white coating is formed on the surface of the glass greenhouse, which can reflect sunlight well, prevent a large amount of heat energy from entering the glass greenhouse, and convert the sunlight entering the greenhouse into scattered light beneficial to crops, which is very beneficial for crop growth.

6、 Groundwater circulation

By circulating underground cold water through ground coolers and adding induced draft fans, the temperature can be lowered at night without increasing the air humidity in the glass greenhouse. It can also utilize groundwater resources and increase lifting units, which can not only cool down and heat up, but also protect the environment and save energy, but the current cost is too high.

Click count: 1343 Update time: March 11, 2023

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