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Stratification is a largely unknown issue, but affects any high level building. This happens when the thermal ‘lift’ of the smoke is not sufficient to break through a warm layer of air gathered in the roof void. Instead, stratification causes the smoke to form in a ‘cloud’ below the roof level – too low for the ceiling-mounted detection to sense it as seen in the picture above.
Roof-mounted fire detection units can be rendered almost useless in the face of this phenomenon. Smoke can form and fires can grow without activating ceiling-mounted detection systems, until a point when it is too late for any action to be effective.
However, this doesn’t have to be the case. Blazequel are now offering an exciting new solution to the problem – Video Smoke Detection. The Araani SmokeCatcher VSD: