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<DIV>Xiaowei,</DIV>
<DIV> </DIV>
<DIV>It's my understanding that both the Baseline and the Proposed models will both have purchased heat if that's what the Proposed Design has.</DIV>
<DIV> </DIV>
<DIV>Kristin</DIV>
<DIV> </DIV>
<DIV>
<DIV><BR>***************************************************************</DIV>
<DIV>Kristin M. Field, EI</DIV>
<DIV>Energy Analysis Group</DIV>
<DIV>Architectural Energy Corporation</DIV>
<DIV>2540 Frontier Ave., Suite 201</DIV>
<DIV>Boulder, CO 80301</DIV>
<DIV>303.444.4149</DIV>
<DIV> </DIV>
<DIV> </DIV><BR><BR>>>> "Xu, Xiaowei" <xiaowei.xu@ny.fk.com> 2/13/2008 3:58 PM >>><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt">Hi, All<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt">I have a question about the purchased heat.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt">I looked at the standard 2004 Appendix G3.1.1.1 Purchased Heat. <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt">It is said: For systems using purchased hot water or steam, hot water or steam costs shall be based on actual utility rates, <B><SPAN style="FONT-WEIGHT: bold">and on-site boilers shall not be modeled in the baseline building design</SPAN></B>.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt">However in Standard 2004 User Manual, about the purchased heat, it is said: <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt">Purchased Heat (§ G3.1.1.1) For proposed building systems using purchased hot water or steam, the baseline building shall use the same hot water or steam source as used for the proposed building, <B><SPAN style="FONT-WEIGHT: bold">but with on-site boilers.</SPAN></B> Costs shall be based on actual utility rates for the purchased steam or hot water.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt">So which one is correct? Definitely, for the baseline case, using the on-side boiler or not would bring a huge difference to the energy consumption for the heating and hot water because of the boiler efficiency curve. Has anyone had this problem before? Thanks a lot. <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
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<P class=MsoNormal><B><FONT face=Arial color=#333333 size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 11pt; COLOR: #333333">Xiaowei Xu</SPAN></FONT></B><B><FONT face="Arial Bold" color=#333333 size=3><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; COLOR: #333333; FONT-FAMILY: 'Arial Bold'"><o:p></o:p></SPAN></FONT></B></P>
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