Air types
In ventilation and air conditioning technology, air types characterize the various air flows with regard to their use. The names, abbreviations and color codes of the air types have been harmonized across Europe since September 2007. The following scheme and table provide an overview.
In particular, the outside air , indoor air , exhaust air and exhaust air are divided into categories for uniform, qualitative classification.
DIN EN 16798-3: 2017 replaces DIN EN 13779: 2007-09.
| Air type | abbreviation | colour | definition |
|---|---|---|---|
|
Outside air (outdoor air) |
ODA (SRO) * |
green | Untreated air that flows into the system or an opening from the outside |
|
Supply air (supply air) |
SUP (SRS) * |
DIN EN 16798-3: blue (DIN EN 12792: blue / red / green / violet) |
Air flow entering the room or air entering the facility after it has been treated |
|
Indoor air (indoor air) |
IDA | Gray | Air in the room or area |
| Overcurrent air (Transferred air) |
TRA | Gray | Indoor air that flows from the room to another area |
|
Exhaust air (air Extract) |
ETA (SET) * |
yellow | Air flow leaving the room |
|
Convection (air Recirculation) |
RCA | DIN EN 16798-3: orange (DIN EN 12792: yellow) |
Exhaust air that is fed back into the air treatment system and reused as supply air. |
|
Secondary air (secondary air) |
SEC | orange | Air flow that is taken from a room and fed back into the same room after treatment |
|
Exhaust air (exhaust air) |
EHA (SEH) * |
brown | Air flow that leads outside |
| Leakage air (Leakage) |
LEA | Gray | Unintentional air flow through leaks in the system |
|
Infiltration (infiltration) |
INF | green | Air entry into the building through leaks in the building envelope |
| Exfiltration (exfiltration) |
EXF | green | Air escapes from the building through leaks in the building envelope |
|
Mixed air (mixed air) |
MIA | separate colors (DIN EN 12792: orange) |
Air that contains two or more air streams (types of air) |
*) Different designation possible for single rooms
Web links
Wiktionary: Ventilation - explanations of meanings, word origins, synonyms, translations
See also
- ventilation
- Ventilation system
- air conditioning
- Air duct
- Air exchange
- Solar ventilation with air collectors
- Kitchen exhaust
- Tunnel ventilation
source
- DIN EN 13779 ventilation of non-residential buildings (e.g. offices)
- DIN EN 12792 Ventilation for buildings - symbols, terminology and graphic symbols
- DIN EN 16798-3 Energetic evaluation of buildings - Ventilation of buildings - Part 3: Ventilation of non-residential buildings - Performance requirements for ventilation and air conditioning systems and room cooling systems