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<DIV>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US">Dear Nick and all other,<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US">thank you for you reply. Sorry, that I could
not answer until now.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US">With your mail I’m back to zero. With a
positive cooling flux the program does not start to simulate (error </SPAN><SPAN
lang=EN-GB style="FONT-FAMILY: Arial">CMP04C)</SPAN><SPAN
style="mso-ansi-language: EN-US">.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US">My settings are as follows and they do not work
with a cooling coil but they work with a heating coil:<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US">* Plant<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US">Cooling coil<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><SPAN style="mso-spacerun: yes">
</SPAN>1<SPAN style="mso-spacerun: yes"> </SPAN># No. of
loops<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US">* Control loops<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"># senses dry bulb temperature in
room.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><SPAN
style="mso-spacerun: yes"> </SPAN>1<SPAN
style="mso-spacerun: yes"> </SPAN>0<SPAN
style="mso-spacerun: yes"> </SPAN>0<SPAN
style="mso-spacerun: yes"> </SPAN>0<SPAN
style="mso-spacerun: yes"> </SPAN># sensor <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"># plant component<SPAN
style="mso-spacerun: yes"> </SPAN>2:cooler @ node no.<SPAN
style="mso-spacerun: yes"> </SPAN>1<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><SPAN style="mso-spacerun: yes">
</SPAN>-1<SPAN style="mso-spacerun: yes"> </SPAN>2<SPAN
style="mso-spacerun: yes"> </SPAN>1<SPAN
style="mso-spacerun: yes"> </SPAN>0<SPAN
style="mso-spacerun: yes"> </SPAN># actuator <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><SPAN
style="mso-spacerun: yes"> </SPAN>0 # No. day
types<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><SPAN
style="mso-spacerun: yes"> </SPAN>1<SPAN
style="mso-spacerun: yes"> </SPAN>365<SPAN
style="mso-spacerun: yes"> </SPAN># valid Sat-01-Jan -
Sun-31-Dec<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><SPAN
style="mso-spacerun: yes"> </SPAN>3<SPAN
style="mso-spacerun: yes"> </SPAN># No. of periods in
day<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><SPAN
style="mso-spacerun: yes"> </SPAN>0<SPAN
style="mso-spacerun: yes"> </SPAN>1<SPAN
style="mso-spacerun: yes"> </SPAN>0.000<SPAN
style="mso-spacerun: yes"> </SPAN># ctl type, law (PID flux control.),
start @<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="mso-ansi-language: EN-US"><SPAN
style="mso-spacerun: yes"> </SPAN>9.<SPAN
style="mso-spacerun: yes"> </SPAN># No. of data
items<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US">1.00000 100.00000 0.00000 22.00000 6.00000
1.00000 1080.00000 1.00000 70.00000<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US">… and so on<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US"><o:p><FONT face=Arial color=#0000ff
size=2><SPAN class=634573409-17102006>Definition of plat
component</SPAN></FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US"><o:p><FONT face=Arial color=#0000ff
size=2>#-> 2, air <SPAN
class=634573409-17102006>cooling</SPAN> coil; 1 node model ; flux
control <BR> <SPAN
class=634573409-17102006>cooler</SPAN> <SPAN
class=634573409-17102006>4</SPAN><BR>
1 # Component has 1
control variable(s).<BR> 10000.<BR> 3<BR>
15.000
1000.0 3.5000
</FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US"><o:p><FONT face=Arial color=#0000ff
size=2></FONT></o:p></SPAN> </P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US"><o:p><FONT face=Arial color=#0000ff
size=2></FONT></o:p></SPAN> </P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US">What should I do?</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US"></SPAN> </P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US"><o:p><SPAN class=634573409-17102006><FONT
face=Arial color=#0000ff size=2>Best regards</FONT></SPAN></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 6pt"><SPAN
style="mso-ansi-language: EN-US"><o:p><SPAN class=634573409-17102006><FONT
face=Arial color=#0000ff size=2>Monika</FONT></SPAN></o:p></SPAN></P></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> Nicolas Kelly
[mailto:nick@esru.strath.ac.uk] <BR><B>Sent:</B> Thursday, October 12, 2006 2:52
PM<BR><B>To:</B> Monika Hall; Ferguson, Alex;
esp-r@lists.strath.ac.uk<BR><B>Subject:</B> RE: [esp-r] Re: plant: air cooling
coil<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Dear Monica,
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">For the P,PI or PID
controller in set the ‘mode’ to a negative value (usually -1). The cooling flux
should be specified as a positive value as it is negated in the cooling
controller. To set an acceptable temperature range for the cooling coil adjust
the ‘throttling range’ control parameters. The coil will operate proportionally
between setpoint +/- 0.5*throttling range. So to control between 20 and 40 the
set point is 30 and the throttling range is 20. <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Note that with HVAC
modelling you will have some excursions from the desired values – you are
modelling non-ideal processes and non-ideal controllers. Further, proportional
control always has an ‘offset’ error, the size of which usually depends upon the
size of the throttling range and the capacity of the component being
controlled.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Regards,
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Nick Kelly on behalf of
ESRU<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">*******************************<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Dr Nick
Kelly<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">RCUK
Academic Fellow<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Energy
Systems Research Unit</SPAN></FONT><FONT color=navy><SPAN
style="COLOR: navy"><o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Institute
for Energy and Environment</SPAN></FONT><FONT color=navy><SPAN
style="COLOR: navy"><o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><ns0:place
w:endInsDate="2006-10-12T13:45:00Z" w:endInsAuthor="las03140"
w:insDate="2006-10-12T13:45:00Z" w:insAuthor="las03140"><ns0:PlaceType
w:endInsDate="2006-10-12T13:45:00Z" w:endInsAuthor="las03140"
w:insDate="2006-10-12T13:45:00Z" w:insAuthor="las03140"><st1:place
w:st="on"><st1:PlaceType w:st="on"><FONT color=navy><SPAN
style="COLOR: navy">University</SPAN></FONT></st1:PlaceType></ns0:PlaceType></st1:place><FONT
color=navy><SPAN style="COLOR: navy"> of </SPAN></FONT><ns0:PlaceName
w:endInsDate="2006-10-12T13:45:00Z" w:endInsAuthor="las03140"
w:insDate="2006-10-12T13:45:00Z" w:insAuthor="las03140"><st1:PlaceName
w:st="on"><FONT color=navy><SPAN
style="COLOR: navy">Strathclyde</SPAN></FONT></st1:PlaceName></ns0:PlaceName></ns0:place><FONT
color=navy><SPAN style="COLOR: navy"><o:p></o:p></SPAN></FONT></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><ns0:Street
w:endInsDate="2006-10-12T13:45:00Z" w:endInsAuthor="las03140"
w:insDate="2006-10-12T13:45:00Z" w:insAuthor="las03140"><ns0:address
w:endInsDate="2006-10-12T13:45:00Z" w:endInsAuthor="las03140"
w:insDate="2006-10-12T13:45:00Z" w:insAuthor="las03140"><FONT color=navy><SPAN
style="COLOR: navy">75 Montrose St</SPAN></FONT></ns0:address></ns0:Street><FONT
color=navy><SPAN style="COLOR: navy"><o:p></o:p></SPAN></FONT></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><ns0:place
w:endInsDate="2006-10-12T13:45:00Z" w:endInsAuthor="las03140"
w:insDate="2006-10-12T13:45:00Z" w:insAuthor="las03140"><ns0:City
w:endInsDate="2006-10-12T13:45:00Z" w:endInsAuthor="las03140"
w:insDate="2006-10-12T13:45:00Z" w:insAuthor="las03140"><FONT color=navy><SPAN
style="COLOR: navy">Glasgow</SPAN></FONT></ns0:City></ns0:place><FONT
color=navy><SPAN style="COLOR: navy"> G1
1XJ<o:p></o:p></SPAN></FONT></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">t:
+44(0)141 548 2854<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">f:
+44(0)141 552 5105<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">e:
</SPAN></FONT><FONT color=navy><SPAN style="COLOR: navy"><A
href="mailto:nick@esru.strath.ac.uk"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">nick@esru.strath.ac.uk</SPAN></FONT></A><o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">*******************************</SPAN></FONT><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
esp-r-bounces@lists.strath.ac.uk [mailto:esp-r-bounces@lists.strath.ac.uk]
<B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Monika
Hall<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> 12 October 2006
12:13<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Ferguson, Alex;
esp-r@lists.strath.ac.uk<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> [esp-r] Re: plant: air cooling
coil</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=3><SPAN lang=DE-CH
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: Arial">Hi Alex and all
other,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=DE-CH
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: Arial">the first view was ok
with a negative flux, I changed it in the ctl file. But when I changed it per
menu, I got the error message, that the value have to be > 0.
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: Arial">Additionally there
must be something wrong, because I can not reach the setpoint temperature. I
would like to cool a room with a cooling coil, if the room air temperature is
higher then 26°C. The only way to handle the air temperature is due to variation
of the cooling flux, but this is dissatisfying.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: Arial">On the other side, the
case with heating works fine. The heating coil heats, when the room air
temperature is below the setpoint of 20°C.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: Arial">Does anybody know if
there is a possibility to set a temperature range for the heating/cooling coil?
P.e. the temperature of the heating coil should be between 20 – 40°C
and for the cooling coil between 16 – 24°C.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: Arial">Best
regards<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: Arial">Monika<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> Ferguson,
Alex [mailto:AFerguso@NRCan.gc.ca] <BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, October 11, 2006 4:38
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Monika Hall;
esp-r@lists.strath.ac.uk<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> RE: [esp-r] plant: air cooling
coil</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" color=blue size=4><SPAN
style="FONT-SIZE: 13.5pt; COLOR: blue">Hi Monika,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=blue size=4><SPAN
style="FONT-SIZE: 13.5pt; COLOR: blue">The cooling coil model (CMP04) expects
the control signal to be negative (i.e. -2000 for a 2000 W cooling
duty.)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=blue size=4><SPAN
style="FONT-SIZE: 13.5pt; COLOR: blue">- Alex </SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
esp-r-bounces@lists.strath.ac.uk [mailto:esp-r-bounces@lists.strath.ac.uk]
<B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Monika
Hall<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, October
11, 2006 10:32<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
esp-r@lists.strath.ac.uk<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> [esp-r] plant: air cooling
coil</SPAN></FONT><o:p></o:p></P>
<DIV>
<P class=MsoNormal><FONT face=Arial size=3><SPAN lang=DE-CH
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Dear
all,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN lang=DE-CH
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">have anybody worked with the plant
component „ air cooling coil, ref. no 4”? My model works fine with the plant
component „ air heating coil, ref. no 5”, but when I change the heating
coil into a cooling coil the model does not work anymore.
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">I use the same controller for
heating/cooling coil:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">controller type a) senses dry
bulb -> actuates flux<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Control law b) P,PI,PID for type
0,2,4...</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">I use the same settings for
heating/cooling, I only change the setpoints.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">The error code
is:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">CMP04C: invalid control data for
component 2: 2000<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">with 2: Cooling coil and 2000: max
htg/clg cap [W]<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Which setting is the right one
for a cooling coil? Could somebody help me?</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Best
regards</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face=Arial size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Monika</SPAN></FONT><o:p></o:p></P></DIV></DIV></BODY></HTML>