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<P>The final approved version of addendum ac is currently on the ASHRAE website (<A href="http://www.ashrae.org/technology/page/132">http://www.ashrae.org/technology/page/132</A>).</P>
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<DIV><FONT face=Technic>Bill Talbert, PE, <SPAN style="FONT-SIZE: 12pt; LAYOUT-GRID-MODE: line; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><SPAN style="FONT-SIZE: 12pt; LAYOUT-GRID-MODE: line; FONT-FAMILY: Technic; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial"><FONT size=2>LEED® AP</FONT></SPAN></SPAN><BR>Mechanical Systems</FONT></DIV>
<DIV><FONT face=Technic>Phone: (608) 441-6677<BR>E-mail: btalbert@aeieng.com<BR><BR>Affiliated Engineers Inc.<BR>5802 Research Park Blvd.<BR>Madison, WI. 53719<BR>Tel. (608) 238-2616<BR>Fax. (608) 238-2614</FONT></DIV>
<P><BR><BR>>>> "Ellen Franconi" <efranconi@archenergy.com> 6/12/2007 2:20 PM >>><BR></P>
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<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">In Addendum ac there is an adjustment for energy recovery for the Baseline. This addendum hasn’t been adopted yet but it should be soon.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT> </P>
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<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Ellen Franconi, Ph.D.<BR>Energy Analysis Group Manager<BR>Architectural Energy Corporation <BR>2540 Frontier Avenue, Suite 201 <BR>Boulder, CO 80301 <BR>303-444-4149 <BR>303-444-4304 fax <BR><A href="http://www.archenergy.com/">http://www.archenergy.com</A></SPAN></FONT><o:p></o:p> </P></DIV>
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<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> Michael Andelman [mailto:mike@andelmanlelek.com] <BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, June 08, 2007 1:21 PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> BLDG-SIM@gard.com<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [BLDG-SIM] 90.1 Appendix G fan power</SPAN></FONT><o:p></o:p> </P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">ASHRAE 90.1 2004 Appendix G has pressure credits for filters, but not for energy recovery devices.<o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">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?<o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks,<o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Mike<o:p></o:p></SPAN></FONT> </P>
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