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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Martin, let me try and understand your
question a little better.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>For different evaporator leaving
temperatures you could simply contact the manufacturers or as many have simply
map the chiller as a traditional Carnot cycle and deduce the efficiency from
the calculations.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I wrote a paper in 93 which is published
in ASHRAE transactions dealing with chilled beams and chiller efficiencies
associated with running chillers at say 13C-15C.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The only problem in the real world is that
we often require at least 6C for air handling units and to have a dedicated
chiller for chilled ceilings is a little extravagant. We usually run the
chillers at 6C, but at variable speed with of course variable evaporator flow.
Bungane Melamakulu and I wrote a paper on chiller efficiency for the IBPSA
conference in <st1:State w:st="on"><st1:place w:st="on">Colorado</st1:place></st1:State>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I do not wish this reply to seem as many
replies that we have done this before, but does this answer you question?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><st1:PersonName
w:st="on"><font size=2 color=black face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:black'>Peter Simmonds</span></font></st1:PersonName><font
size=2 color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'> Ph.D.</span></font><font size=1 color=gray face=Arial><span
style='font-size:7.5pt;font-family:Arial;color:gray'><br>
Senior Associate, Advanced Technology Group<br>
<br>
</span></font><font color=gray face=Arial><span style='font-family:Arial;
color:gray'>IBE Consulting Engineers</span></font><font color=gray><span
style='color:gray'><br>
</span></font><font size=1 color=gray face=Arial><span style='font-size:7.5pt;
font-family:Arial;color:gray'>14130 Riverside Drive Suite 201</span></font><font
size=1 color=navy face=Arial><span style='font-size:7.5pt;font-family:Arial;
color:navy'><br>
</span></font><font size=1 color=gray face=Arial><span style='font-size:7.5pt;
font-family:Arial;color:gray'>Sherman Oaks, CA 91423<br>
p: (818) 377-8220 ext. 246<br>
f: (818) 377-8230<br>
m: (818) 219-1284<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Martin Belusko<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, January 08, 2009
3:15 PM<br>
<b><span style='font-weight:bold'>To:</span></b>
'bldg-sim@lists.onebuilding.org'<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] high CWLT
chiller performance curves</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Hi</span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'> </span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>I am looking for some chiller performance curves at
elevated evaporator temperatures for chilled ceiling systems in commercial
buildings. Manufacturers provide data up to 9 deg. C exit temperatures
but not up to 15 deg. C. Ideally COP values at different evaporator,
condenser and load would be ideal for a water cooled chiller.</span></font><span
lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'> </span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Regards</span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'> </span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Dr. Martin Belusko</span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Research Engineer</span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Sustainable Energy Centre</span></font><span
lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><st1:place w:st="on"><st1:PlaceType w:st="on"><font size=2
face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>University</span></font></st1:PlaceType><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>
of <st1:PlaceName w:st="on">South Australia</st1:PlaceName></span></font></st1:place><span
lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>ph: +61 8 8302 3767</span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>fx: +61 8 8302 3380</span></font><span lang=EN-AU><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-AU
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-AU
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
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