Louvers appear straightforward—they are only blades in a frame—but there are several crucial aspects to take into account when selecting one for a particular application. Are you looking for the best HVAC air distribution products in UAE? Tecnalco Aluminium Technical Engineering Factory is your right option for it.
In this blog, we go through few fundamental things to think about while selecting the appropriate louvre for the job.
What are Louvers?
Since the Middle Ages, louvres have been employed in construction openings to let air into a structure while keeping out unwelcome elements like water, birds, and garbage. Louvers are now used by architects not just to create eye-catching and distinctive exteriors but also as the first line of defence against water damage to HVAC systems and ducting.
Maximizing the advantages of louvre design and function requires a basic understanding of performance parameters early in the selection process. This method of choosing louvres promotes optimal HVAC system performance and lessens the need for more expensive repairs due to damage to air handling equipment. Select the louvers from the best intake and exhaust air louvre manufacturers in UAE.
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Protection
The louvre should be made to stop rain and debris from entering your HVAC system. Here, a number of things are involved. A louvre should offer protection, but how much protection is required depends depend on how it will be used. The ability of common louvres to reject water from mild rainfall can be evaluated for water penetration. Testing for wind-driven rain will be necessary for severe weather louvres.
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Performance
The louvre should pose as little impediment as possible to airflow through its open area. All louvres will offer some resistance; however hurricane and severe weather louvres will offer greater resistance than regular louvres. Pressure drop, or the loss of pressure when air travels through the louvre, is the term used to describe this resistance.
The air performance of the louvre is specifically impacted by factors including free area, face velocity, and system effects like ductwork. This short article from our Condenser series, Air Performance and Keeping the Flow, will help you brush up on air performance.
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Aesthetic
Louvers should complement the design of the building. Regardless of where they are installed, they should look beautiful. Both personal preference and the overall aesthetic of the project will play a role in this choice. To ensure that each louvre fits your expectations, manufacturers offer basic colours and color-matching alternatives. Any louver’s finish adds colour, but over time, it may start to lose its lustre.
Any finish can become damaged by sunlight, and the louver’s colour can deteriorate. You must select a finish that can withstand salt spray if your louvre will be installed in a coastal area. How long it maintains its original colour will depend on the type of finish you use.
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Airflow Direction
The direction of airflow should be your next priority. You must determine whether the louvre will cover an intake point or an exhaust point on your building if it will be utilised for ventilation.
Louvers designed for various types of flow will have features that set them apart from exhaust louvres. You must take into account how the louvre rejects water and other undesirable materials since they draw air into the system.
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Blade Styles
The louvre is made up of blades, and different applications will require different types of blades. Louvers can have either stationary or adjustable blades, or a combination of both.
The possibilities of the louvre are determined by the blade profiles; choose straight profiles for air performance, baffle profiles to prevent water infiltration, or chevron profiles for the greatest wind driven rain protection.
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Air Volume and Face Velocity
The amount of air flowing through the louvre is referred to as air volume and is measured in CFM (cubic feet per minute). The air flow across the face of the louvre is measured in terms of face velocity. FPM(feet per minute) is often used to express face velocity.
The air performance of the louvre, which determines how the louvre manages air flow, may be determined using these two variables. All louvres depend on air volume and face velocity.
Conclusion
Although each application may require further consideration, these ten qualities are crucial. The application may also be influenced by external circumstances, such as the wind speed in the vicinity of the louvre. Before selecting the louvre, compile a comprehensive list of criteria and considerations. For guidance or technical support in choosing performance louvre systems, get in touch with Tecnalco Aluminium Technical Engineering Factory, the leading sellers of HVAC air distribution products in UAE.