Greenhouses are built up in fields for growing vegetables and flowers. At first, before greenhouses were popularized, people might just use plastic film to cover the planted vegetables in the cold winter to ensure that they could eat fresh vegetables. Later, people were inspired to thicken the plastic film and build it up with posts, which is the prototype of simple greenhouse. Due to the different climate and applications in different places, the specifications of greenhouse sheds are also different. There are many types of greenhouses, and the following are a few types of greenhouses commonly used today, and their advantages and disadvantages.
Arched greenhouse is an economic greenhouse with small amount of structural steel and good heat preservation performance. The manufacturing cost is relatively low, and it is an economic greenhouse, which is suitable for most areas in China. Most of the northern regions use double film greenhouse, while the southern regions use single film greenhouse.
It can get big light in the visible light 0.4-0.7 micron range, and after the layer film is inflated, it can form a thick air bag, which can effectively prevent heat loss and stop the invasion of cold air. After adopting double layer inflatable film, it can greatly improve the heat preservation performance of greenhouse and save the running cost.
The top of the covering material is covered by polyethylene non-drip longevity film, the outer layer is anti-UV and the inner layer is anti-dew collection; the surrounding can be covered by polyethylene non-drip longevity film or polycarbonate hollow board according to users' needs.
Glass greenhouse has modern and novel appearance, stable structure, smooth vision, strong light transmission rate, up to 90% or more, and strong resistance to wind and snow. Covering materials for domestic single-layer float glass or double-layer hollow glass long service life, uniform light, relatively high intensity, with extremely strong anti-corrosion, flame retardant. more than 90% of light transmission, and does not decline with time and other advantages.
Double-layer insulating glass cover is stronger than single-layer glass cover in terms of anti-collective dew, good heat preservation (where single-layer glass cover greenhouse light transmittance﹥90%, double-layer insulating glass cover light transmittance﹥80%), and the greenhouse is connected with special aluminum profiles at the top and all around. Compared with other greenhouses, it has beautiful appearance, stable structure, smooth vision, strong light transmission rate, strong wind and snow resistance, and good display effect.
Compared with other covering materials, polycarbonate board (PC board) has many advantages such as good lighting, warmth, lightness, high strength, anti-condensation, impact resistance, PC board material only melts but not expands, good flame retardancy at very high temperature, economic and durable, no fracture or breakage during installation and use, strong adaptability and safety, etc.
The sunny side of the board has anti-UV coating, and the inner side has anti-UV coating. The sunny side of the board has anti-UV coating, and the inner side has anti-dew collection function, and the anti-aging performance reaches 10 years. Therefore, the greenhouse covered by it has long service life, modern appearance, stable structure, beautiful and generous form, smooth vision, good heat preservation effect, and can save heating energy in winter.
The above content is the greenhouse types and characteristics, I hope it will be helpful to you.
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Post time: Feb-22-2023
