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Ventilation theory and air handling units
Air handling units can be manufactured targeted at the specic purpose for which they will be
used. Possible features comprise, but are not limited to the following non-exhaustive list of
characteristics:
● Construction: monoblock or split in separate delivery sections
● Installation location: indoor, outdoor
● Execution: horizontal, vertical, double deck or side-by-side
● Design: e.g. standard, hygienic, explosion-proof or anti-grease
● DX coil: with or without (see below the example of an AHU system with DX coil)
● Heat recovery: with or without
● Size: ranging from 150 m
3
/h to 100000 m
3
/h
● Applying European standards: EN1886; EN13053
RA
EA
OA
SA
Casing
HumidifierAir filterDamper
Sirocco fan
Air flow DX coil
Turbo fan
Main types of air handling units
Supply type
Exhaust type
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