Positive and Negative Pressure Ventilation in Chicken Houses

The principle of Livestock Farming House ventilation is that under any circumstances, a certain range of airflow speed should be maintained in the house to make the air environment in the place consistent and to ensure uniform ventilation in the home. If the gas flow rate is too slow, it cannot play a good role in ventilation. If the gas flow rate is too fast, the temperature and humidity of the chicken house will change too much and cause chicken stress.

Here is the content list:

• l Two ways of negative pressure ventilation in chicken houses

• l Positive pressure ventilation in chicken houses

Two ways of negative pressure ventilation in chicken houses

According to the difference between the position of the fan and the flow direction of the wind inside the house, negative pressure ventilation can be subdivided into longitudinal ventilation and transverse ventilation.

Longitudinal negative pressure ventilation is to install a fan at one end of the chicken house, and set an air inlet at the other end. When the fan works, it will generate a negative pressure inside the chicken house, so that the air in the chicken house flows from one end of the chicken house along the longitudinal direction of the chicken house. The axial direction flows to one end of the fan to achieve ventilation.

Horizontal negative pressure ventilation is to install the fan on the front and rear walls of the chicken house. When the fan is working, the air in the chicken house flows in a vertical direction with the longitudinal axis of the chicken house. Since the horizontal span of the chicken house is smaller than the longitudinal span, a fan with a smaller volume can be selected, or multiple fans can be distributed to ensure the uniformity of ventilation inside the chicken house. Installing a wet curtain at the air inlet can enhance the ventilation effect.

Positive pressure ventilation in chicken houses

Agitated air ventilation is a ventilation method in which an electric fan or fan is installed above the chicken coop, and the air is mechanically agitated by the rotation of the fan. This method can accelerate the airflow in the chicken house, take away the heat from the chicken body surface, and also discharge part of the air in the chicken house. The ventilation method is relatively simple, the machine is easy to install, and it can play an emergency role.

Duct ventilation connects the fan to the duct and adopts a fixed duct to send the air generated by the fan to a specific space in the house. Duct ventilation can fully ensure that fresh air is delivered to the most suitable position in the chicken house. And at the same time, the temperature and humidity of the air inlet can be dynamically adjusted to ensure the appropriate temperature and humidity of the chicken house. Duct ventilation is widely used, and different types of chicken houses can be used.

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