Setting of air outlet in greenhouse

The setting of the air outlet is a more critical part of the construction of the greenhouse, and due to the difference in the structure of the shed, the position of the air outlet is also different when it is set up.

Most of the canals (corridors) of greenhouses are generally set up near the back wall, so there will be two rows of columns on both sides of the canal, and the location of the air outlet is generally near the columns on the south side of the canal. The location of the air outlet is different, and the shed facilities and management methods related to the air outlet are also different.

Some sheds have air outlets on the south side of the columns, just at the top of the vegetables. When the air outlet is opened, the cold wind will blow the vegetables directly, and at the same time, some debris from the shed covering such as straw curtains will fall directly on the vegetables, which will affect the growth of the vegetables.

Therefore, for the air outlet in this position, a windshield film needs to be installed at the bottom of the air outlet to prevent the wind from blowing directly on the vegetables, and on the other hand, to prevent sundries from falling on the vegetables. When it rains, the rainwater changes its flow direction due to the windshield film, which will wash the back wall roots. Therefore, a 1 to 1.5-meter-high film should be installed near the back wall roots to block the rainwater flowing down from the windshield from facing the rear. The scouring of the wall.

Some air outlets are on the north side of the column, directly above the canal. The air outlet at this location is far away from the vegetables, and will not affect the vegetables due to grass curtain debris and precipitation. However, since the air outlet here is close to the back wall, precipitation will affect the back wall. Therefore, for the air outlet at this location, the entire back wall needs to be wrapped with a film to prevent rain washing.

No matter what kind of shed structure, the reasonable setting of the air outlet should be 1.5 to 2 meters from the highest point of the rear roof. Too far or too close is not good. If the air outlet is set far away (more than 2 meters), when the air outlet is opened, there is still a distance near the side of the shed cover, and the pulled up shed film is loose. One is easy to form a water pocket, and the other is in strong wind. You need to put down the shed cover to hold it down. If the distance between the air outlets is relatively short (less than 1.5 meters), most of the space will be occupied after the shed cover is rolled up, and the opening distance of the air outlet will be hindered, which will affect the ventilation of the shed.

Therefore, it is recommended that when setting the position of the air outlet, first determine the position of the shed cover and the space occupied by it, and then reasonably set up other corresponding facilities according to the position of the air outlet.

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Aluminum Fluoride CAS No.7784-18-1

Aluminum Fluoride Basic Information
CAS: 7784-18-1
MF: AlF3
MW: 83.98
EINECS: 232-051-1
Mol File: 7784-18-1.mol

Aluminum Fluoride Structure

Application

[Use 1]
Used as a flux for non-ferrous metals, it can be used to make fluoride from other aluminum.
[Use 2]
Used as an electrolytic bath component in the production of aluminum to lower the melting point and increase the conductivity of the electrolyte.
A suppressant for fermentation when used to produce alcohol.
Used as a flux for outer glaze and enamel enamel of ceramics.
Used in welding fluids in metal welding.
Used to make optical lenses.
It is used as a catalyst for organic synthesis and as a raw material for synthesizing cryolite.

Aluminum Fluoride,Aluminum Fluoride Sds,Aluminum And Fluoride,Aluminum Fluoride Formula

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