Fuente: WIPO "circular economy" The disclosed technology relates to a passive ventilation system for buildings, designed to enhance air circulation and reduce reliance on mechanical ventilation systems. The system features a hollow central column (1) with air outlets (16) on its outer surface to capture air from the building interior. An air nozzle within the column accelerates the airflow, directing it through an upper and lower panel that form an air passage, creating a low-pressure zone to expel air passively. The system integrates seamlessly into buildings, with a central column foundation (7), a base platform (801), and parallel floor slabs (8). The air outlets are strategically located between the slabs, enabling air circulation from multiple floors through the central column, which expels it to the exterior without mechanical assistance. This innovative design ensures improved thermal comfort and energy efficiency, making it ideal for use in commercial, residential, and office buildings.