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<DIV dir=ltr align=left><SPAN class=689404818-13022009><FONT face=Arial
size=2>Shaojie,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=689404818-13022009><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=689404818-13022009><FONT face=Arial size=2>I
believe you should be concerned with the wetbulb temp of the mixed air entering
the coil (unless you are 100% OA). If I remember correctly, I
went through the same analysis once. It becomes a little difficult because
I don't believe the mixed air wetbulb is a variable that you'll find available
in the hourly reports. But if you do the manual calculation things should start
to come together.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=689404818-13022009><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=689404818-13022009><FONT face=Arial
size=2>Good luck,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=689404818-13022009><B><SPAN
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<DIV dir=ltr align=left><SPAN class=689404818-13022009><B><SPAN
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</SPAN></SPAN></B><B><SPAN
style="COLOR: #4d4d4d; FONT-FAMILY: 'GillSans Light'; mso-bidi-font-size: 10.0pt">Jonathan
M. Curtin, EIT, LEED</SPAN></B><SUP><SPAN
style="FONT-FAMILY: 'GillSans Light'">®</SPAN></SUP><B><SPAN
style="COLOR: #4d4d4d; FONT-FAMILY: 'GillSans Light'; mso-bidi-font-size: 10.0pt">
AP</SPAN></B><B><SPAN
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style="mso-spacerun: yes"> </SPAN></SPAN></B><B><SPAN
style="COLOR: #4d4d4d; FONT-FAMILY: 'GillSans Light'">Mechanical
Engineer</SPAN></B><STRONG><SPAN
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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>eric
wang<BR><B>Sent:</B> Friday, February 13, 2009 12:48 PM<BR><B>To:</B>
bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> [Bldg-sim] DX Cooling EIR
Ratio Curve<BR></FONT><BR></DIV>
<DIV></DIV>
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<DIV>Hi,</DIV>
<DIV> </DIV>
<DIV>I used the default DX Cooling EIR Ratio Curve
(DX-Cool-Cap-fEWB&OAT) in eQUEST. The variables are t
entering wetbulb and t enter condenser. I assume these refer to
outside air wet and dry bulb temperatures. After exporting outside
air wet and dry bulb temperatures in hourly report, the value of
"Temp correction to COOLING-EIR" I calculated is different to the one in
the hourly report by using the curve coefficients. Can anyone point out if
my understanding is correct?</DIV>
<DIV> </DIV>
<DIV>Thanks a lot for your help</DIV>
<DIV> </DIV>
<DIV>Shaojie</DIV></TD></TR></TBODY></TABLE><BR>
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