Air Vents

Air vents are of crucial importance in creating the required air flow pattern in the poultry house. The amount of air expelled through the fans must be fully compatible with the size of the air entry opening and the air flow direction.
In order to control the entry of air at various stages, we use different devices that fully meet the needs of each stage.
In growing stages requiring little fresh air, and when the temperature inside the house must be maintained, air is allowed to enter through vents. The vents are properly spaced near the ceiling along the longitudinal walls, and the size of the opening is controlled automatically by adjusting the shutter to the correct degree. Air entering the house is directed parallel to the ceiling incline at the proper speed, so that the fresh air first mixes with the warm air at the upper levels of the house, and only then is directed downward to the poultry living area.
For blackout houses we supply special shutters with light traps which ensure that fresh air enters the house, while totally preventing any light from coming in.
For special applications, when a greater supply of air is needed close to the ceiling, a continuous inlet baffle is installed, which operates similar to the vents.
In "tunnel ventilation" poultry houses, the air openings at the end of the house are controlled with "Rollseal" curtains. These are special, internationally patented curtains that ensure total insulation when closed but provide for the controlled opening of an appropriate area when fans are running and the house is underpressurized. Agrotop specialists calculate the size of a full open air vent which may be adjusted, according to the number of fans operating at any given time, using the negative-pressure control system. A special air deflection shutter is installed in the house wall to deflect air upwards, so as to prevent discomfort for the birds living close to the air opening.
In some houses insulated shutters are installed along the entire length of the house, making it possible to open the wall mechanically for natural ventilation. Other houses have insulated curtains that, when open, also allow natural