Greenhouse Sun-shading

What is the difference between the inside and outside shading system of intelligent greenhouse in hot summer

Summer is a difficult season for greenhouse greenhouses, because the outdoor temperature is generally above 30 degrees during the day, and the temperature inside the greenhouse will rise to 40 degrees or higher, so the growth of some crops will stagnate. And some eggplant crops in winter warm vegetable shed will choose to pull seedlings to deal with. So for some fruit crops and flowers that need to be planted in the four seasons all year round, then one of the lowest energy consumption methods in the summer intelligent greenhouse is the shading and cooling. Among them, the shading of intelligent greenhouse is divided into external shading system and internal shading system, so what is the difference between the two? What is the working principle and method of electric sunshade system? Guangyuan greenhouse to share with you the science of science.

I. Indoor and outdoor shading system

The external shading system is an electric shading system installed parallel to the ground at the top of the greenhouse. The design distance from the top of the greenhouse is more than 0.5 meters, which can not only block the sun from the outside of the greenhouse, but also the gear rack of the sunshade system will not friction the top of the greenhouse when working. Avoid trouble. The external shading system is composed of the outer shading base, the outer shading column, the outer shading transverse longitudinal beam, the outer shading brace, the outer shading net, the driving edge, the driving card, the lifting wheel and so on.

The biggest advantage of external shading is to block the sunlight directly outside the greenhouse. Because infrared ray is the main source of heat, the cooling effect is obvious. But the disadvantage of external shading is that a separate skeleton is needed outside the greenhouse, so the price is slightly higher. At the same time, the outer shading net should distinguish the type and shading density of the outer shading net, which can be divided into aluminum foil black and white net shading rate of more than 90%, and round silk black net shading rate from 65~85. Choose according to the light intensity of the area and the light demand of the planting crop.

II. Indoor sun-shading system in buildings

The inner shading system is a sunshade system parallel to the ground mounted on the inner beam of the greenhouse. Its system accessories are the same as the external shading system. There are mainly sunshade net, driving edge, driving card, hanging wheel, curtain line, online shopping and other small accessories.

The difference between the inner shading net and the outer shading net is that the inner shading net filters and reflects the light entering the greenhouse, partly reflects into the shed, and partly enters the shed in the form of scattered light. Therefore, internal shading also plays a certain cooling role, but most of them are scattered light so that the crops in the shed are not directly exposed, seedlings, buds are not burned.

III. Choice of shade for two types of greenhouses

The difference between the two sunshade nets has been very clear, as for the choice depends on the specific use of our greenhouse. Some of our home-made glass greenhouses with nursery and flower planting will choose to add external shading system, which is the most effective way to cool down. However, we will also find that some Dutch glass greenhouses imported in China have no external shading system. This is mainly the main internal planting of vegetables. In summer, it is very part of the seedling pulling period, and the shed is no longer planted and used. Secondly, adding external shading will affect the cleaning of top cleaning machine. Therefore, the selection of greenhouse supporting system is based on the overall design scheme, so professional greenhouse design and construction still needs professional design companies to do.

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