And forced

Dust cleaning occurs when additional different devices are working. In dust chambers, gravity is used, and in cyclones — centrifugal force. A popular element of cleaning from various small and large particles are electric, fabric or other materials from other materials. By the method of moving air flows, ventilation is divided into natural and forced. With natural movement of the flow, it is created due to the difference in the weight of the pillars of internal and external pressure, as well as under the influence of wind on the building. Forced ventilation is carried out by blower machines — fans. The used air is removed outward, and the applicant from the street also undergoes preliminary processing. Today not a single building is complete without a ventilation system. Its mandatory availability is provided in places of large accumulations of people, hospitals, libraries, production, storage warehouses of products and goods.