There are more and more types of modern greenhouses. The following small series can roughly sort out the classification and characteristics of greenhouses according to different classification standards.
One: According to the cover materials of greenhouses, greenhouses can be divided into:
1, glass greenhouses. Advantages: long life, good light transmission, easy to regulate the indoor environment; disadvantages: high cost, high transportation costs.
2, PC (polycarbonate) plate greenhouse. Advantages: long life, light transmittance second only to glass greenhouse, indoor climate is easy to control, good insulation effect; disadvantages: high cost.
3, film greenhouse. Characteristics: Compared with the other two types, the film greenhouse has low cost, and it is easier to control the environment within the shed. So now most of China's greenhouses are used plastic film.
Second, greenhouse greenhouses can be divided into:
1. Single arch greenhouse: This greenhouse is mainly used in the southern region of China. Advantages: The winter insulation effect is good, summer shade, good rainproof effect.
2. Single slope sunlight greenhouse: This kind of greenhouse is a form of greenhouse with Chinese characteristics. It uses solar energy as its main source of heat. It does not heat or heat at night, and it is insulated by thermal insulation materials for overwintering production.
3, monomer greenhouse: This greenhouse has a large proportion of surface area, winter heating operation is more difficult; operating space is small, the indoor environment is not easy to control, low land utilization.
4. Multi-storied greenhouses: These greenhouses are large-scale production greenhouses that connect multiple single greenhouses through a gutter. It can fully realize the automatic and intelligent control of greenhouse production, which is the trend of the development of facility agriculture.
Third, according to the use of greenhouses greenhouses can be divided into:
1. Flower growing greenhouse:
The flower growing greenhouse must have the following details due to the particularity of its crops: The changes in the greenhouse environment can be controlled to a high degree. No matter how harsh the external environment is, we can artificially satisfy the factors such as light, humidity, temperature, and air in the flowers. Needs.
2, vegetables growing greenhouse
Use greenhouses to grow vegetables, apply more organic fertilizer, less fertilizer, and avoid chemical contamination of vegetables. Supporting related equipment in the control system can automatically modulate environmental factors in the greenhouse.
3, wooden seedling greenhouse
Using greenhouse saplings can not only shorten the seedling cycle, improve the quality of seedlings, but also increase the yield of wood seedlings and improve the land utilization rate.
4, aquaculture greenhouse
Greenhouse breeding is the use of modern greenhouses to control the characteristics of the aquaculture environment, so as to achieve the environment can also be aquaculture, aquaculture investment, high income purposes.
5. Flower Showroom Greenhouse
Flower Showroom Greenhouse is mainly used for flower exhibitions and trades. It is necessary to ensure the normal growth of flowers, but also to ensure that visitors can naturally appreciate the beautiful posture of flowers. The flower exhibition hall is generally made of high-end materials. This type of greenhouse has a wide interior space, pleasant indoor climate and suitable for viewing.
6, shade
Shade shelters are generally used for seedling storage. The use of artificial shading means to reduce the direct sunlight area, play a cooling role in the shed, but also have enough sunlight to make the seedlings in a normal physiological state.
Rectifier bridge is to seal the rectifier tube in a shell. Points full bridge and half bridge. The full bridge connects the four diodes of the connected Bridge Rectifier circuit together. The half bridge is half of four diode bridge rectifiers, and two half bridges can be used to form a bridge rectifier circuit. One half bridge can also be used to form a full-wave rectifier circuit with a center-tapped transformer. Select a rectifier bridge to consider. Rectifier circuit and operating voltage.
Bridge Rectifier
Bridge Rectifier,Original Bridge Rectifier,Full Bridge Rectifier ,Diodes Bridge Rectifier,Single Phase Rectifier Bridge, Three Phase Bridge Rectifier
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