This study involves comprehensive experimental measurements and CFD simulations in a mockup of a full-size classroom with realistic loads. Four different air distribution systems have been tested:
- Mixing ventilation produced from a high velocity ceiling supply device
- Bag-supply (textile) device located in the ceiling
- Displacement ventilation using a standard low velocity air supply device
- A down-to-floor impinging jet air supply device.
The measured wall temperatures have been used as boundary conditions for the CFD simulations. Predicted and measured quantities are: air velocity, air temperature, ventilation effectiveness and local mean age of air. The down-to- floor impinging jet was also tested in a field trial.