With Construction Specialties Perform Louvres, you get the air movement, security and sight screening performance of our standard louvres, under the cover of a modern perforated aluminium skin. The first and only manufacturer to offer fully concealed louvre system that’s been tested in accordance with BSRIA standards for air performance and water penetration, Construction Specialties turns louvres into a covert operation that’s proven to perform.
Louvre pressure drop is one of the key parameters of establishing the louvre requirements for your project as it’s based on the needs of the building and its ventilation system, rather than “free area” which doesn’t really mean anything.
Pressure drop is defined as the pressure differential from one side of a louvre to the opposite side, often expressed in Pascals (Pa). Louvre pressure drop occurs when frictional forces, caused by the resistance to flow, act on air moving through a louvre.
Increased louvre pressure drop can prevent equipment inside the ventilated area drawing sufficient air through the louvre, resulting in overheating, as the equipment has to work harder to draw the air through.
Guidance
Air Density (ρ)
is generally 1.225 kg/m³ (at sea level)
Volumetric Flow (qv)
is supplied by the ventilation engineer and relates to the amount of air required through the system
Core Area (A)
The minimum height times the minimum width of the front opening in a louvre assembly with the louvre blades removed.
Discharge Loss Coefficient (CD)
See chosen louvre model testing information.
Why Perform Louvres
Unlike decorative mesh, which can harm mechanical quipment, Perform’s perforated skin is engineered to work in harmony with the interior louvre blades to provide unparalleled air intake and water protection performance. We even offer a Storm Resistant model (PL-5700).
Perform Louvres are available to integrate into any curtain wall system. Whether capture, butt-glazed or even a custom directional reveal, Construction Specialties can provide the solution. Perform Louvres mold to your design’s character, whether as a dramatic accent or subtle nuance.
Perform Louvre Models
| Louvre Model | Config. | Louvre Depth (mm) | Blade Spacing (mm) | Rain Defence | Free Area (4'x4') | Free Area (8'x8') | PD @900 FPM |
|---|---|---|---|---|---|---|---|
| PL-5700 | Custom | 190.5 | 50 | A | 44.5% | 48.3% | 0.13 |
| PL-4080 | Custom | 190.5 | 100 | C | 46.8% | 48.3% | 0.16 |
