Seven advantages of Venlo multi-span glass greenhouse

When it comes to the Venlo-type greenhouse, everyone is familiar with the structure of this type of greenhouse.

Today, I will explain the functional characteristics of the Venlo-type greenhouse, that is, the advantages of the Venlo-type greenhouse. Among them, the first thing to tell you is that the covering material of Venlo greenhouse is divided into glass or sunshine board.

1. High transmittance and uniform illumination

Due to the characteristics of the load-bearing structure, the Venlo-type greenhouse roof adopts glass with high light transmittance as the lighting material, and uses special aluminum profiles as the roof beam, which greatly reduces the section size of the roof beam, and eliminates the need for roof strips and connections. It reduces the shading of the entire roof system and greatly improves the light transmittance of the entire greenhouse. Due to the weak light in some parts of Europe, this feature is well adapted to the characteristics of less light in winter in Europe, and has become an important factor for its large-scale promotion and use. In addition, due to the use of the same structure of the small surface, the distribution of light in the greenhouse is also more uniform, creating conditions for uniform light of crops, especially suitable for greenhouse seedlings and flower production that requires high light consistency.

2. The greenhouse is well sealed

Venlo-type greenhouses use special aluminum alloys and matching rubber strips and injection molded parts as glass inlay components, which greatly improves the airtightness of the greenhouse. On the one hand, the good airtightness ensures that the heat loss caused by convection in the greenhouse is greatly reduced, and on the other hand, it provides conditions for good roof drainage. Therefore, Venlo-type greenhouses often combine the gutter with a small section and the roof on both sides of the gutter to form the roof drainage channel of the greenhouse, which greatly improves the roof drainage efficiency.

3. Large ventilation area

Compared with other types of greenhouses with the same span, the Venlo-type greenhouse roof has a higher proportion of the projection on the ground, and can have 2-4 pairs of roofs in each span, that is, 2-4 ridges and gutters. Therefore, the same ventilation rate as other greenhouses with the same span can be achieved when the interval window opening method is adopted, and the ventilation rate is doubled when the continuous window opening method is adopted. Generally, the ventilation area of Venlo-type greenhouse can reach about 30% of the greenhouse floor area.

6. Components are versatile

Due to the consistency of Venlo-type greenhouse roof units and the similarity of node structure, it provides the greatest possibility for the standardization of components, thereby reducing the large variation and large number of components caused by different greenhouse spans. Production costs and management costs also provide greater convenience for product after-sales service and maintenance.

7. The height of the greenhouse is low and the load capacity is strong

Due to the reduction of the height of the roof, the overall height of the greenhouse is correspondingly reduced without affecting the height of the indoor space of the greenhouse. Since the wind load of the main structure of the greenhouse is directly related to the height of the greenhouse, reducing the height of the greenhouse is actually equivalent to reducing the wind load that the greenhouse bears, that is, under the same conditions, the ability of the Venlo type greenhouse to bear the wind load is improved.