Ventilation of industrial buildings is of great importance in the improvement of working conditions. It is designed to remove the polluted air from the working premises and supply of fresh air in them. Aeration and mechanical ventilations systems are most and widely used industrial buildings
Aeration – is an organized, calculated and controlled natural ventilation. With aeration can be provided in shops enormous Air exchange, remove them from the excess heat and polluted air, bring fresh air into the working zone. Aeration is mainly used in hot shops. For admission to the shop outside air into the walls of the building are made open, openings in the form of gates, windows with transoms, shutters, and to remove heat and a contaminated air in the roof equipped with aeration lanterns in the form of a raised roof with side opening transoms.
In small areas with heat release hood can be carried out through direct exhaust shafts mounted on springs; evolution of heat or gas. To use additional force of wind pressure and protection from blowing exhaust shaft at the outer end of her set one of the types of deflectors. Deflectors mounted on the highest portions of the roof, so that for any direction of the wind, they are under the influence of sturgeon head.
Mechanical ventilation is carried out by means of mechanical boosters – fans or ejectors. Ventilation designed for sucking air from the premises, called the extraction and injection – supply. As the exhaust and supply air can be local and general exchange.
Local exhaust ventilation is used to remove the heat, gases, vapors or dust directly from their place of education. This is the most efficient way to remove industrial hazards, as in this case, they do not apply in the shop. In order to increase the effectiveness of local exhaust ventilation, should be possible to conceal the sources of pollutant discharge and perform suction from the shelter, and if completely hide the source of pollutant discharge is not possible, extraction should be as close to this source.
General exchange exhaust ventilation is arranged for the removal of the contaminated plant or heated air. Suction holes of ventilation are usually located in the upper zone management where usually heated air rises, vapors or gases.