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<DIV><FONT face=Arial size=2><SPAN class=596524122-31072003>I am trying to
ascertain the effect that outside air has on the energy load of a school. There
are 27 air units I am running as SZRH (and they really DO have reheat coils
versus a heating coil).</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=596524122-31072003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=596524122-31072003>By the way, I input
the outside air requirements at the ZONE level (actually one ZONE corresponds to
one SYSTEM).</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=596524122-31072003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=596524122-31072003>In my perusal of
hourly parameters, there really is no specific component for outside air
ANYTHING shown. I have attempted to use the Return Air Temp and the Mixed Air
Temp, along with the fixed Total Supply, Return, and Outside air volumes to do a
mass balance, thus determining the OSA cooling and heating energy
components.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=596524122-31072003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=596524122-31072003>But the hourly data
shows the Return and Mixed Temperatures almost identical. Because I put the
Outside Air in the ZONE command, is it acting like Infiltration? Should I be
bringing it into the SYSTEM level instead?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=596524122-31072003></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff size=4><STRONG>John R. Aulbach, PE,
CEM</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Project Engineer</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Sempra Energy Solutions</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>555 West Fifth Street</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Mail Location 27F3</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Los Angeles, CA 90013</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Tel: (213) 244-8551 Cell (213)
219-4875</STRONG></FONT></DIV>
<DIV><STRONG><FONT size=2></FONT></STRONG> </DIV>
<P align=left><B><FONT face="Courier New" size=1>"Sempra Energy Solutions is not
the same company as SDG&E/ SoCalGas, the Utilities. Sempra Energy
Solutions is not regulated by the California Publi</FONT><FONT
face="Courier New" size=1>c Utilities Commission, and you do not have to buy
Sempra Energy Solutions products or services to continue to receive quality
regulated service from the Utilities." </FONT></B></P>
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