<DIV id=RTEContent>If my understanding is correct, the design set point can be used. ASHARE 90.1 doesn't specify the number of suppy and indoor air setpoint. The reason why 90.1 specify the delta T is to specify the air volume the system distributes. In that sense, a cold air distribution system could be more energy-efficient than the ASHRAE budget building, and could contribute to earning additional LEED points. if you use a system that has a delta T less than 20F, the system can be less energy-efficient and may have a bit negative impact on your way to LEED points unless special consideration is taken into account.<BR><BR><B><I>Peter Simmonds <peter.simmonds@ibece.net></I></B> wrote: <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <META content="Microsoft Word 11 (filtered medium)" name=Generator><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:SmartTagType name="City"
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lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">If this assumption is true, then using a displacement system, supplying air at 63F, the space operating condition would be 83F.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Nyserda and CEC use design temperature set points but I cannot seem to find these in 90.1,2004.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">So in order to comply with LEED 2.2, the energy performance has to comply with appendix G, but what temperature set points are used?<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Be gentle with your
replies, its only three days before ASHRAE.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=3><SPAN lang=EN-GB style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Peter Simmonds Ph.D.</SPAN></FONT><SPAN lang=EN-GB><o:p></o:p></SPAN></div> <div class=MsoNormal><FONT face=Arial size=3><SPAN lang=EN-GB style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Associate</SPAN></FONT><SPAN lang=EN-GB><BR></SPAN><FONT face=Arial color=gray size=1><SPAN lang=EN-GB style="FONT-SIZE: 7.5pt; COLOR: gray; FONT-FAMILY: Arial">IBE Consulting Engineers</SPAN></FONT><SPAN lang=EN-GB><o:p></o:p></SPAN></div> <div class=MsoNormal><?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:Street w:st="on"><st1:address w:st="on"><FONT face=Arial color=gray size=1><SPAN lang=EN-GB style="FONT-SIZE: 7.5pt; COLOR: gray;
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