General ventilation: concept, principle of work and advantages
Similar deviations from schemes that are the most economical, for example, have a place for ventilation of baths and shower pavilions, where ventilation with the supply and removal of air at the top, under the ceiling of the room is most often accepted (for the same reasons). The mutual arrangement of the supply and exhaust holes along the area and perimeter of the ventilated room is usually chosen from those reasons that the supply air enters the working area and to fixed workplaces, if possible, more clean.
When choosing a general ventilation system, they strive for the house so that the degree of air pollution in the places of stay of people is minimal and so that at certain points there are no “stagnant”, t. e. poorly ventilated areas. In civilian buildings, mixing of air throughout the height and area of the premises is carried out mainly due to convective currents of air, cooling and sinking down in external fences and rising at the top of the warm surfaces (heating devices, the surface of the human body, etc. p.).Therefore, in small in size of the rooms of civilian buildings intended for the work of a small number of people, the mutual arrangement (along the perimeter and area of the premises) of the supply and exhaust openings of general exchange ventilation is almost indifferent to the work. Typically, they are located for constructive and thermal considerations in the internal walls, sometimes in the immediate vicinity of the horizontal direction from each other with the implementation of the most often supply of the influx to the upper zone (0.5 m from the ceiling), and the extracts from the lower zone (0.5 m from the floor).