The Many Aspects Of Exterior Architectural louvers

by Bridget on January 30, 2012

Louvers are a ventilation system. They allow for air to pass through windows. At the same time as allowing for air flow, they also keep unwanted elements out, such as dirt and water. Exterior architectural louvers are able to due this because of their design. A louver is a fixed or operable blade that is mounted to a frame, this structure allows for air flow. They are an important part of any residential or commercial property, providing protection from the elements, yet adding a flare to a building.

Factors

There are a variety of factors that must be taken into consideration when deciding on which louvers to install. Factors such as free area, water penetration, and air resistance must be properly determined to allow for the best louver solution.

Free Area

Free area is an important aspect to consider when thinking about installing louvers. The free area is calculated by determining the total area of the obstructed air flow in comparison to the overall wall opening. The complete louvered opening versus the unobstructed opening will most often fall within the ranges of 35% to 60%. A high percentage of free area is very beneficial. This will allow for an optimized amount of air flow to a smaller wall opening.

Obstruction

Obstruction is important as it prevents water from entering through the louver. A wholly obstructed opening will not allow any amount of water to enter. A fully non obstructed opening will let water enter at an unimpeded rate. However, a properly designed louver will all for an optimized free area while at the same time allowing for minimal water entry.

Water Penetration

Water penetration is considered when figuring the velocity of air intake. The first point of water penetration is the exact point in which the louver will let water enter. By figuring the threshold measurement of the air intake velocity the water penetration point will be determined. This calculation will allow for the best louver installation.

Pressure Loss

An obstruction found int eh air stream will cause a resistance, or pressure loss. These obstructions can include building structure, filters, coils, ductwork, and louvers. The actual air flow resistance is determined by measuring the air flow running through the louver in comparison to the pressure difference found at any given free area velocity.

Blade Shape

Louvers will create a resistance to air flow. This is because they cause an obstruction. The frame of the louver as well as the shape of the blade determines the resistance of the air flow. Blades that are of lover angles will have a more aerodynamic shape that allows for less resistance. In order to fully figure the resistance to airflow the free velocity allowed by the louver must be determined. It is very important to figure out the resistance because this will help maximize air flow.

Exterior architectural louvers are a great asset to any residential or commercial property. When thinking of installing these louvers it’s important to take all these factors into consideration. By determining the free area, water penetration, and air flow resistance the proper louver solution can be installed. There are many types of louvers; there are motorized wood louvers as well as sun control louvers. Louvers are a very important as they allow for proper air flow as well as protection from certain unwanted elements.

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