Ventilation window of chicken shed

Adult chicken growth and egg laying process, scientific ventilation is an indispensable part, the most suitable temperature inside the chicken coop is 18-25 °C, between 13-28 °C can also reach a good production level, the temperature difference between day and night in the house is best controlled within 5 °C, the maximum does not exceed 8 °C, the temperature of the horizontal point in the house is controlled within 2 °C, and the vertical temperature difference does not exceed 1 °C. The temperature inside the chicken coop should be adjusted according to the change of the outside temperature to keep the temperature in a reasonable range. Then in addition to the use of water curtains, fan cooling and ventilation equipment, there are also side ventilation windows are also an indispensable part of the interior of the chicken coop. Today, I will learn more about the side ventilation windows for you.First, in the process of chicken coop ventilation, what periods do you need to use ventilation windows?1. Use mixed ventilation method: exhaust fan at the end of the exhaust, close the air intake at the front end and the wet curtain position of the side wall, so that the air enters the chicken coop from the ventilation window above the side wall. In this way, fresh air can not only enter the chicken coop, but also avoid cold air blowing directly into the chicken coop. Especially in spring and autumn, make the chicken coop evenly mixed to achieve a uniform temperature of the chicken coop.2. Use horizontal ventilation mode: install the exhaust fan on the side wall, only open the air intake of the horizontal fan to the side wall during horizontal ventilation, and close the air intake on the same side of the horizontal fan. Horizontal ventilation is to ensure air quality without causing the ambient temperature inside the coop to vary too much, as the chickens basically do not feel the wind when ventilating horizontally. Generally used during the cold season and brooding period.Second, what are the specifications of ventilation windows In most cases, it is best to make the air intake gap almost reach the full length of the chicken coop to get enough ventilation, so in practice, it is best to make the air inlet as slender as possible. There are various sizes, generally: width 560mm, height 270mm; Width 600mm, height 320mm, or width 700mm, height 300mm and other specifications.Third, the material of the ventilation windowGenerally, engineering plastics are used for injection molding, which has high durability and strong aging resistance. It is best to equip the outer entrance with a bird net.Fourth, how to configure the number of ventilation windowsMany companies configure ventilation windows, not according to the number of chickens, but according to the length of the coop, 3 or 4 meters. This unfounded empirical design will introduce a lot of uncertainty into the ventilation during the feeding process, making the temperature control system unable to achieve the desired results.Generally speaking, the most suitable negative pressure is 16.3pa, and the most suitable side wall inlet wind speed is 4.7m/s.Calculation principle of the number of side wall air inlets and dampers:As long as the intake volume of mixed ventilation is calculated, if the intake volume of the sidewall damper can meet the exhaust requirements of hybrid ventilation, the number of dampers at this time can definitely meet the minimum ventilation requirements. Air exchange rate = total coop volume / exhaust volume Minimum ventilation – 15 minutes Transitional ventilation: 5-8 minutes Maximum ventilation 1 min , 0.015 (cubic meters/kg/min) per kilogram of body weight per chicken.Example: The chicken coop is 100 meters long, 12 meters wide, the wall height is 3.8 meters, the ridge height is 1.5 meters, and the volume of the chicken coop is 5460 cubic meters