[BLDG-SIM] 90.1 Appendix G fan power

Michael Rosenberg Michael.Rosenberg at state.or.us
Fri Jun 8 15:09:19 PDT 2007


This was addressed (fixed) by an addendum to Appendix G and will be
released with the 2007 version of 90.1. In fact the entire fan power
section has been modified.



Michael Rosenberg
Oregon Department of Energy
625 Marion St. N.E.
Salem, OR 97301-3742
Phone : (503) 373-7809
Fax: (503) 373-7806

>>> "Michael Andelman" <mike at andelmanlelek.com> 6/8/2007 12:20:39 PM
>>>
ASHRAE 90.1 2004 Appendix G has pressure credits for filters, but not
for
energy recovery devices.

Thus, it would appear that any situation where energy recovery is
required,
the as designed fan system is at a disadvantage since the baseline fan
bhp
is calculated without any pressure credit, but the as design system is
sized
to include the pressure drop through the energy recovery device.  I've
looked for interpretations on this, but could not find any.  Does
anyone
know of a ruling on this?

 

Thanks,

Mike



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