LIGHTS

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Chapter I
A naturally ventilated hall will get the air spun sides, without obstructions created by construction surrounding trees curtains. Free space around the building must be ventilated for at least 6 to 10 times the height of nearby buildings. Ventilated hall will be placed with the long side perpendicular to the prevailing wind direction to ensure optimal conditions for entry of fresh air. The distance between the openings for entry and exit should be larger. The effect of natural ventilation in a warm hall is insensitive if all openings are located at the same level, regardless of surface voids. Entry openings are situated lower side to a height of no more than 1.5m from the floor. Lies with entry openings. If the lower side openings have a height greater than 2m not be done logically lucru.In ventilation area if there is one type of entry or exit can not provide effective natural ventilation achieve, if the other missing category.
Organising good natural ventilation is caused by changes in surface air entering or leaving the building by closing or opening of skylights or windows openings, depending on variations in wind speed and direction and the changes that may occur in the clearance of the building. If a constant heat releases hall place and if the conditions are calm exterior, maximum performance can be achieved when all input openings on all sides of the building and all exhaust openings on both sides of the skylight is set in open position completely. Natural ventilation is organizing in order to judiciously use the wind action and prevent the adverse effects that may occur.
On the side exposed to wind, all entry holes will be completely open and completely closed drain holes. At the same time gaps of light wind on the opposite side will open. Such a provision is favorable natural ventilation to achieve the effect of thermal pressure, wind pressure exerted on the plane because entrance openings increase air flow extracted from the hall.
It may be that input holes at the bottom of the wall opposite the wind, completely open to serve ventilation under the effect of thermal pressure to become goals exhaust outdoors when the wind creates on this side of a depression greater than that created indoor thermal effect. Situation arises in which hall can be crossed by currents having a transverse horizontal direction and a sense of movement in front windows of the facade exposed to wind catreferestrele opposite.
If these currents exist in the way flawed areas, sanitary conditions will worsen downstream. Remedy this situation is adjust openings to cancel the disturbance created by wind in the opposite front pockets to restore function are openings for entry. Depression have increased within these areas of the building. Free surface will increase the light on the opposite side wind. If they get enough effect to be larger openings on the surface opposite the surface meaning of beating the wind.
If the measure is insufficient to partially close the gaps must input the bleak facade surface. If wind direction is parallel to the axis of the hall and skylight, there is no need to close any of the entry or exit holes.

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