<html>
I'd suggest you review the CIRs more closely. DCV has been approved
as an energy saving measure and you can modify schedules to simulate
savings. You must follow the Exceptional Calculation Method
(section 11.5) of the Energy Cost Budget Method of 90.1.<br>
<br>
At 10:14 AM 06/02/2003 -0400, you wrote:<br>
<blockquote type=cite class=cite cite><font face="arial" size=2>Hi
All,</font><br>
<br>
<font face="arial" size=2>We are currently working on our first LEED
certification project. We use PowerDOE as a modeling tool, but
these questions should apply to all modeling platforms.</font><br>
<br>
<font face="arial" size=2>The LEED process requires modeling practices to
follow those outlined in the ASHRAE 90.1 Standard User's Manual.
The standard does not allow for the augmentation of schedules to model
efficiency measures. This is a problem for us in that we often use
schedules to simulate measures such as lighting occupancy sensors and
demand controlled ventilation.</font><br>
<br>
<font face="arial" size=2>Typically:</font><br>
<font face="arial" size=2>-For lighting occupancy sensors, we adjust our
known office schedules using a profile taken from the JIES (I'm afraid I
don't have the specific source in front of me).</font><br>
<font face="arial" size=2>-For demand controlled ventilation, we develop
an hourly outside air Fraction of Design schedule for each AHU using
known occupancy schedules and an assumption of 20 CFM per
occupant.</font><br>
<br>
<font face="arial" size=2>To us, both of these methods seem to be
accepted modeling practice for determining measure performance.
However, as stated pretty explicitly in the archived credit
interpretation requests (CIRs) on the LEED site, LEED won't allow for the
adjustment of schedules to simulate these measures. Does anyone
have a method (or insight into developing a method) for either of these
calculations in a manner that would be acceptable for the LEED
process?</font><br>
<br>
<font face="arial" size=2>Many thanks in advance for your
responses.</font><br>
<br>
<font face="arial" size=2>Wade</font><br>
<br>
<font face="arial" size=2>Wade McLaughlin<br>
DMI<br>
450 Lexington St.<br>
Newton, MA 02466<br>
p 617-527-1525 x103<br>
f 617-527-6606</font><br>
<br>
<pre>
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</pre><font face="Courier New, Courier"></font></blockquote>
<x-sigsep><p></x-sigsep>
<font face="Abadi MT Condensed Light" size=4 color="#008000">Marcus B.
Sheffer
energy & environmental consulting<br>
Energy
Opportunities
717-292-2636<br>
1200 E Camping Area
Road
Fax: 717-292-0585 <br>
Wellsville, PA USA 17365-9783
sheffer@sevengroup.com<br>
a Seven Group member company
<a href="http://www.sevengroup.com/" eudora="autourl"><u>www.sevengroup.com</a><br>
</font></u></html>