[BLDG-SIM] Measured part load data for VAV fans

[steve moller - SBE]

In my quest to make my HVAC models more realistic I am looking for some
measured part load data for VAV fans with variable speed drives.  The
theoretical part load curves I have show a rapid fall in fan power as
flowrate decreases. (something like a power of 2.5 curve)
 
A common design in Australia uses a  variable speed drive to maintain a
minimum supply duct static pressure (typically 200 to 300 Pa).  This
puts a floor under the part load curve at low flowrates.
 
The other factor I'm interested in is how the efficiency of the fan,
motor and VSD change with reducing flow-rate.
 
Can anyone point me to published data from real VAV installations?
 
Thanks in advance,
 
Steve Moller
Senior ESD Engineer

sbe 

sustainable built environments 

Melbourne
Level 10, 459 Lt Collins St
Melbourne Victoria 3000
Australia
T:   +61 3 9670 9820
F:   +61 3 9670 9890
E:   steve.moller at sbe.com.au <mailto:steve.moller at sbe.com.au> 
W:  www.sbe.com.au <http://www.sbe.com.au/>  

Sydney
Level 6, 61 Market Street
Sydney NSW 2000
Australia
T:   +61 2 8289 5720
F:   +61 2 9286 3745 

Perth
PO Box 159
Greenwood WA 6024
Australia
T:   +61 8 9342 6237
F:   +61 8 9342 6237

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