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TRG-TRC014-EN 37
period two
Components of a VAV System
notes
Supply Duct System
The supply duct system transports the primary air from the air handler to the
VAV terminal units and then on to the space diffusers. A successful design
achieves the following:
n Minimizes the static pressure and associated power requirements of the
supply fan
n Minimizes the installed cost without sacrificing system efficiency
n Supplies air to each VAV terminal unit without excessive noise
n Accommodates space limitations without excessive pressure drop
n Minimizes design time
Supply Duct System
VAV
VAV
terminal
terminal
unit
unit
diffuser
diffuser
flexible
flexible
duct
duct
sheet metal
sheet metal
supply duct
supply duct
central
central
air handler
air handler
Figure 52