Take control of draughts with a smart ventilation approach

07 March, 2018

SAV Systems, David Bradbury, Coanda effect

When designing ventilation systems for schools and commercial spaces, specifiers need to place more emphasis on preventing the common problem of draughts associated with old ventilation designs, warns SAV Systems’ David Bradbury..

He asserts: “Smart ventilation units (SVUs) create an acceptable draught rating in line with ISO 7730 (‘Ergonomics of the thermal environment’) through a combination of close control of inlet air temperature and sufficient mixing of inlet air and room air before the air hits the occupied zone.”

SVUs exploit the Coanda effect (shown in the diagram) to move the supply air across the ceiling for 6-8 metres, thereby entraining and mixing room air before the inlet air falls to the occupied zone.

For more information on this story, click here: March 2018, 168

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Take control of draughts with a smart ventilation approach

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