Pig house ventilation type

There are two types of ventilation in pig houses: natural ventilation and mechanical ventilation. There are three ways of mechanical ventilation: negative pressure ventilation, positive pressure ventilation and combined ventilation. Negative pressure ventilation is to use the exhaust fan to extract the dirty air inside the house, so that fresh air enters the house through the intake pipe; positive pressure ventilation is to use the fan to force the fresh air outside the house to be sent into the house, so that the pressure inside the house is increased, and the dirty air is passed through. The duct is naturally excluded; the combined ventilation is a method of simultaneous mechanical air supply and exhaust, which is suitable for large enclosed pig houses.