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Structural features of a multi-span glass greenhouse


Multi-span glass greenhouse for agriculture crops is a Venlo type of greenhouse covered by the glass as lighting materials. Multi-span glass greenhouse for agriculture crops has the longest life, which is suitable for use in a variety of areas, and all kinds of climate conditions. In the greenhouse industry, according to the size of the span and width, it is divided into many construction types, and with different using ways, it is divided into vegetable glass greenhouse, glass ecological greenhouse, seedling glass greenhouse, sightseeing glass greenhouse, and so on.

The multi-span glass greenhouse is simple and practical equipment for cultivation or breeding, it is easy to construct, convenient to use. A tunnel greenhouse is widely used in the cultivation of vegetables, fruits, and flowers. Tunnel greenhouse can provide the conditions of suitable illumination, moisture, and temperature, raising the output and resisting the natural disasters. It can bring forward or backward the provision, remitting the contradictions of provision and demand.

Structural features of a multi-span glass greenhouse

Light transmittance is the first choice for multi-span greenhouses. A multi-span glass greenhouse for agriculture crops is daylighting buildings. Therefore, light transmittance is the basic indicator of indoor light transmittance for temperature evaluation indicators. Light transmittance refers to the amount of light outside the greenhouse and the amount of light…score ratio. The greenhouse affects the transmittance and transparent covering material of the shading skeleton greenhouse, and the transmittance of the greenhouse also changes with the angle of solar radiation in different seasons. The light transmittance of the greenhouse is a direct factor that affects the growth of crops and the selection of crop varieties.

General multi-span plastic greenhouse for 50-60 years, the light transmittance of glass greenhouse is 60%-70%, and the light transmittance of the solar greenhouse is above 70%. Secondly, durability, greenhouse construction should consider its durability. Greenhouse materials Aging resistance affects the durability of the greenhouse. It can affect the capacity of the carrier structure as a factor of the greenhouse.

In addition to strength, it also shows that the transmittance of the material decreases with time, which is a decisive factor affecting the service life of transparent materials. The service life of an ordinary steel structure greenhouse is about 15 years.

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