What is a Sand Trap Louvre?
Sand Trap Louvres, as their name suggests, are a type of louvre designed to impede dust, sand and other aggregates from entering a HVAC system.
In this article, we’ll be going over the specifics of where the Sand Trap Louvre should be installed, why they’re necessary, and how they work.
Where Are Sand Trap Louvres Installed?
Normally, they are installed in a similar way to other types of louvres; just like other types of louvre, their specific placement will depend on the design of your HVAC system.
However, the key difference between normal louvres and Sand Trap Louvres is that Sand Trap Louvres, in addition to the mitigation of rain ingress of normal louvres, also remove larger airborne particulates from the air. This makes them appropriate for areas where there is large amounts of airborne sand or dust which could be into ventilation systems. This makes them suitable for desert areas of the world such as the Arabian gulf, but is equally valid near quarries or beaches closer to home.
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Why Are Sand Trap Louvres Necessary?
In these areas, the specification of sand trap louvres should be considered over standard louvres. They will function as a pre-filter, preventing larger airborne particles from being drawn into the system. This will not only reduce the possibility of damage to dampers, fans etc., but also extend the life of filters, maintaining system efficiency for longer and reducing costs associated with cleaning and replacement.
How Do Sand Trap Louvres Work
Sand Trap Louvres work via a simple system of interlocking louvre blades. These catch up to 92.5% of dust and sand. This material falls onto a sloped cill, where it is then expelled from the louvre by gravity.Our Series STL sand trap louvre has been independently tested by BSRIA against EN 13181:2001, the test results are detailed in our product brochure and the full report can be sent on request.
Depending on your needs, this type of Louvre can be further modified with a rear-mounted volume control damper installed, in order to control the amount of air that passes through the louvre. As well as this, there are a range of powder coating options available.
