The cover is stored down so that the tuyere cannot be pulled to the maximum
At present, most of the coverings in the sheds have been stored, but many of the coverings are stored on the lower side, which affects the air outlet opening. For this situation, it is advisable to move the covering upwards until it is ensured that the covering does not fall to the back wall. Under the condition that a rain film is installed in the shed, the tuyere will be rolled up and tightened tightly after it is pulled up to avoid the formation of a water pocket.
Shading net laying tightly affects ventilation
The air forms convection in the shed, and the hot air is discharged from the top air outlet to bring cold air from the front face (arch canopies are on both sides). When some vegetable growers cover the shade net on the shed, the pest control effect is achieved by the way and often occurs. Covering the entire shed, the shed’s ability to partially heat the air is lost, and the shade net also affects the circulation of air. As a result, the ventilating effect of the booth is reduced. Therefore, it should be noted that when covering the shade net, the vent should not be covered so as to prevent the hot air inside the shed from being discharged and affect the cooling effect.
The ceiling of the booth is not hot enough to be blocked
In a small sloped shed, the hot air in the shed cannot be discharged through the top wind well, so that even the top cooling outlet has a limited ability to cool down again. That is to say, in the same weather conditions, a high-height, large-arched greenhouse can be cooled down by just putting a 40-cm outlet on the top. In a greenhouse with a small degree of arch, even if the air outlet is increased to 60 centimeters wide, the temperature may not be reduced to the same level.
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