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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>I have
some questions about the Water-Side Economizer simulation in eQUEST. I searched
for this topic in the simulation group archive. It seems that someone also had
the problems with the simulation of water-side economizer but no one answered it.
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Currently
I am working with an office building with DX coil system. The proposed design
uses the water side economizer because the air-side economizer is not
available. I added the water side economizer into the existing condenser water
loop. But the simulated result showed the system with water-side economizer had
more energy consumption than the system w/o economizer because of more energy
consumed by the fan, pump and cooling tower.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Here
is question about the simulations setting in eQUEST for water-side economizer:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>1.
what loop should the water-side economizer be attached to: the current existing
condenser water loop or a new condenser water loop? <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>I
tried both and got quite different results. None of them saved energy.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>2.
what temperature in eQUEST should be used for control the water economizer? If
the current existing condenser water loop is used, how to control the
temperature both for the water-side economizer and the DX coil?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>3. How
to set the control for the cooling tower? <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Any suggestion
would be much appreciated. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Thanks.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333;font-weight:bold'>Xiaowei Xu</span></font></b><b><font
size=3 color="#333333" face="Arial Bold"><span style='font-size:12.0pt;
font-family:"Arial Bold";color:#333333;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><i><font size=2 color=gray face=Arial><span
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<p class=MsoNormal><b><font size=2 color="#333333" face=Arial><span
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height=20 id="_x0000_i1025" src="cid:image001.gif@01C8A61C.BCA51650"></span> </font></b><b><font
color="#333333"><span style='color:#333333;position:relative;top:-3.0pt;
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font-weight:bold'>KURTZ</span></font></b><font color="#333333"><span
style='color:#333333'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color="#333333" face=Arial><span
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York</span></font></st1:City><font color="#333333"><span style='color:#333333'>,
<st1:State w:st="on">NY</st1:State> <st1:PostalCode w:st="on">10017</st1:PostalCode></span></font></st1:place><font
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<p class=MsoNormal><font size=2 color=black face=Arial><span
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<p class=MsoNormal><u><font size=2 color=black face=Arial><span
style='font-size:11.0pt;color:black'><a href="http://www.flackandkurtz.com/"><font
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color=black><span style='color:black'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333'>212.532.9600 </span></font><st1:place
w:st="on"><b><font color=black><span style='color:black;font-weight:bold'>Main</span></font></b></st1:place><b><font
color=black><span style='color:black;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333'>212.951.2662 </span></font><b><font
color=black><span style='color:black;font-weight:bold'>Direct<o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=2 color="#333333" face=Arial><span
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