EXHAUST SHAFT Russian patent published in 2019 - IPC F24F7/00 

FIELD: ventilation.

SUBSTANCE: invention relates to the field of ventilation and can be used to remove polluted air from the livestock or production premises. Exhaust shaft includes a rectangular cross-section duct made of insulating walls and an air-transparent panel located on the south side with an air gap installed in the middle of the shaft parallel to the transparent panel heat-conducting screen. Screen is made of metal conductor with sawtooth protrusions on its upper edge, facing the top of the exhaust shaft, and connected to a source of direct electric current.

EFFECT: exhaust shaft allows to increase its air output in the absence of solar radiation.

1 cl, 2 dwg