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<DIV dir=ltr align=left><SPAN class=765011200-09012009><FONT face=Arial
color=#0000ff>Good question! My guess is that each pump may be 22W /
gpm. Since they are required to use variable speed drives (for >300T),
it won't affect energy adversely.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=765011200-09012009><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=765011200-09012009><FONT face=Arial
color=#0000ff>There may be an ASHRAE clarification on this topic; have you
checked with them?</FONT></SPAN></DIV>
<DIV> </DIV>
<DIV class=Section1>
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><B
style="mso-bidi-font-weight: normal"><FONT size=4>The Building Performance
Team<BR></FONT></B><B style="mso-bidi-font-weight: normal">James V. Dirkes II,
P.E., LEED AP<BR></B>1631 Acacia Drive NW<BR>Grand Rapids, MI 49504<BR>616
450 8653<?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></P>
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<FONT face=Tahoma size=2><B>From:</B> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <B>On Behalf Of </B>xiao
dongyi<BR><B>Sent:</B> Thursday, January 08, 2009 6:18 PM<BR><B>To:</B>
bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> [Bldg-sim] chilled water pump
power<BR></FONT><BR></DIV>
<DIV></DIV><FONT face=Arial>Hi,</FONT><BR><FONT
face=Arial></FONT> <BR><FONT face=Arial>I have a question regarding the
chilled water pump power calculation in ASHRAE 90.1 Appendix G:</FONT><BR><FONT
face=Arial></FONT> <BR><FONT face=Arial>ASHRAE 90.1 Appendix G Paragraph
G3.1.3.10 requires that "The <I>baseline building design </I></FONT><FONT
face=Arial>pump power shall be 22 W/gpm</FONT><FONT face="Times New Roman"><FONT
face="Times New Roman"><FONT face=Arial><EM>.". </EM>If the chilled water
pumping system is a primary-secondary system, how does this rule apply? i.e.
does the 22 W/gpm apply to the primary pump, secondary pump, or both? Or, do
I need to divide it between the primary and secondary
pump?</FONT></FONT></FONT><BR><FONT face="Times New Roman"><FONT
face="Times New Roman"><FONT face=Arial></FONT></FONT></FONT> <BR><FONT
face="Times New Roman"><FONT face="Times New Roman"><FONT face=Arial>Your
suggestions will be greatly appreciated.</FONT></FONT></FONT><BR><FONT
face="Times New Roman"><FONT face="Times New Roman"><FONT
face=Arial></FONT></FONT></FONT> <BR><FONT face="Times New Roman"><FONT
face="Times New Roman"><FONT face=Arial>Thanks,</FONT></FONT></FONT><BR><FONT
face="Times New Roman"><FONT face="Times New Roman"><FONT
face=Arial></FONT></FONT></FONT> <BR><FONT face="Times New Roman"><FONT
face="Times New Roman"><FONT face=Arial>Dongyi</FONT></FONT></FONT><BR><BR>
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