The invention relates to an air mixing system for a poultry house or broiler house, comprising a set of air mixing devices (4), said air mixing devices each comprising a shaft with an inlet (6) for air and an outlet (8) for air, connecting means (7) for connecting said shaft vertically in a poultry house or broiler house, a propulsion unit (10) in said shaft between said inlet and said outlet for propelling air from said inlet to said outlet, an ionization unit arranged in said shaft for in operation charging particles carried in a flow of air running from said inlet to said outlet, and a particle collecting surface arranged near said outlet for in operation capturing said charged particles.
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