NATURAL VENTILATION SYSTEM Russian patent published in 1998 - IPC

FIELD: agriculture; heat exchange natural ventilation system for live stock barns. SUBSTANCE: natural ventilation system for building with roof and exhaust ventilation pit has incoming air channel and inner air circulation channel separated by heat conducting surface and two ducts formed along ceiling and one under the other, provided with slopes towards building walls and equipped with condensate removing system. Incoming air channel is connected with outside atmosphere through air intake located in attic space and with inner atmosphere, through slots at longitudinal walls. Second duct forms air clearance with first duct, ceiling and side walls of building to provide circulation of inner air. Exhaust ventilation pit is coupled directly with inner space of building. Second duct is connected to ceiling by means of easy-to-remove hangers. EFFECT: enlarged operating capabilities. 2 cl, 2 dwg