[Bldg-sim] 90.1-2007 fan power pressure drop allowance question

[Chris Jones via Bldg-sim]

The 90.1-2007 fan pressure drop allowance includes credit for sound attenuation sections. Do you apply the credit for each silencer on a system? The system I am looking at has 3 silencers, one on the supply duct, one on each or two return ducts entering the AHU.



[Title: RWDI - Description: RWDI logo]<http://www.rwdi.com/assets/logos/RWDI-logo.gif>

Christopher Jones, P.Eng. | Senior Energy Analyst
RWDI
901 King Street West, Suite 400, Toronto, ON M5V 3H5 Canada
Tel: (519) 823-1311 ext 2052
rwdi.com<http://www.rwdi.com/>



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