Displacement ventilation
The displacement ventilation is used in ventilation and air conditioning systems used and is a special form of displacement ventilation . The supply air (fresh air) is introduced into the room to be ventilated with little impulse. It is used in the comfort area or in the ventilation of areas (industry) with locally occurring thermal loads. The supply air required for the room is let out through displacement air outlets close to the floor. A fresh air lake forms in the floor area , the air of which flows upwards on warm surfaces, for example people. Fresh outside air is therefore available where it is needed without having to circulate the air volume of the entire room. The air brought in should have an under temperature of approx. 2-4 K compared to the room air and a max. Flow out of the air outlet at a speed of 0.25 m / s.
Displacement ventilation achieves the highest ventilation efficiency as displacement ventilation . Compared to conventional ventilation concepts, energy- consuming air induction is completely dispensed with when air is introduced. With the air routing used, drafts are generally reduced due to the minimized air speed and room comfort is increased. Displacement ventilation is mainly more economical for building operations because of the less required air volumes and lower system pressures and is usually associated with less acoustic pollution.
Displacement ventilation has been a recognized technology for public buildings with high ventilation requirements and high demands on air quality and indoor climate for many years. It is used successfully in many places of assembly, cinemas, concert and theater halls, etc.
See also
Web links
- Franc Sodec: Displacement ventilation and its areas of application. In: IHKS specialist journal. Edition 2003–2004, accessed October 17, 2014.