[Bldg-sim] 90.1-2004 APPENDIX G: Design Air Flow Rates
Howe, Timothy
Timothy.Howe at stantec.com
Mon May 12 12:07:43 PDT 2008
Does anyone have any information on any ASHRAE 90.1-2004 addenda that addresses G3.1.2.8 Design Air Flow Rates.
The 2004 standard uses a 20°F delta T to size the supply air flows.
I have a lab project where the supply air needs to be 100% OA and 8 AC per hour.
I read here: http://www.i2sl.org/eleclibrary/documents/maor.pdf See page 22 that supposedly there is an Addendum that addresses this issue.
Does anyone know where I can find that? I have looked through all the Addendum on the ASHRAE website and came up empty.
I guess the only other thing I think is a loophole is G3.1.2.5: which states that the baseline and proposed must have the same ventilation rates. This to me reads that if you are required to supply say 100% OA then both case should have it.
Any suggestions?
Thanks!
Tim.
Timothy Howe, MS, LEED AP
Mechanical Engineer
Stantec
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