JP252
Today’s manufacturing technology means the architectural design or ‘feel’ need not be compromised: Coanda plates can be personalised to each project, not just in the material but the faceplate too, so you can back-illuminate, include corporate branding and logos or powder coat to match a corporate colour. The other advantage of adding a Coanda plate to a swirl is energy efficiency. When a thermally-sensitive swirl is specified, the swirl automatically senses a variation in the preset internal temperature and adjusts the airflow vanes accordingly. Air is directed more vertically in a heating situation to avoid stratification, and horizontally in a cooling scenario to eliminate risk of that cold ‘dumping’. It happens within seconds – before any additional demand is made on the HVAC system. Equally relevant, the operation is based on memory alloy componentry so no electricity – and therefore power – is required. This capability now extends beyond swirls, to linear diffusers and jet nozzles. This further optimises the potential for energy efficiency and comfort within spaces, providing options for more capacious internal spaces with larger volumes of air to heat or cool. Linear diffusers create an invisible curtain of air. To give you an
‘off the wall’ example, the principle was utilised in a major office development in London, with a two storey atrium reception: positioning the linear diffusers vertically by the entrance helped reduce the in- and out-rush of air every time anyone entered or left the building. Jet nozzles give the ability to direct the air in a large space more directly, so it is delivered first to where it is most needed,
maintaining the ambience and reducing energy wastage heating or cooling volumes of air that are unoccupied. At low level, floor grilles feature lockable dampers to control the airflow direction to avoid hot and cold spots. Because the air almost instantly impacts with the occupants, the incoming air temperature has to be higher to avoid them feeling cold. As the air moves upwards, it picks up heat from occupants and machines, helping avoid demand for cooling – a benefit in warmer summers. So in the drive towards energy efficiency, do not overlook the small things, the detail. Take a moment to talk to the experts – the manufacturers – who know their products and how to get the most from them. To borrow from a brand name we all know – every little helps.
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