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<DIV><FONT face=Arial size=2>Thanks to all who responded to my last
question. </FONT><FONT face=Arial size=2>I have another question related
to the ASHRAE Energy Cost Budget method.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>In the notes following Table 11.4.3A in the Energy
Cost Budget section of ASHRAE 90.1 (11-A in the User's Manual), note 6 states
that "hot water supply temperature shall be modeled at 180 [degrees] F design
supply temperature and 130 [degrees] F return temperature." That's a hot
water system DT of 50F! When a DT of 20-30F is pretty standard, 50F seems
awfully aggressive (and difficult to design). Does anyone have any insight
into what I'm missing here?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><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></DIV><PRE>
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