Adjustable air exchange in the room is called ventilation. This is a whole set of events that serves to create favorable air conditions. He must meet the requirements of the technological process and be comfortable for humans. Each of us, with our activities, emits water vapors, heat and carbon dioxide into the environment. Various production processes occur with the release of heat, gas and dust. From the influence of these factors, the environment in the room will no longer meet hygienic requirements. For this reason, a person’s well -being worsens and his performance worsens. Also, adverse factors affect the safety of equipment, building structures, materials and products. Here you just can not do without ventilation, which of course must meet all standards, but they are reduced to maintaining certain humidity, temperature, mobility and purity of air. Meteorological conditions themselves in the building are laid even when designing internal engineering systems. Each technological process corresponds to a certain maximum permissible concentration of gases, vapors and dust.
The ventilation system works according to this principle: the air in the room is mixed with the supply, while heat transfer occurs and hygienic meteorological conditions are created by regulatory documents. To achieve the desired parameters, the air masses supplied from the outside are heated or cooled, moistened or succumbed to drying, cleaned. Gas can be heated with a califfer or when mixing an internal outright with an external cold. In special chambers, it is moistened, cooled and dries. Moisturization is carried out by spraying water with a special nozzle or nozzle made of porous materials. This operation can be carried out directly in the room by finely dispersed spray of water. Water evaporates, moisturizing air.
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.