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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Dear Mehdi,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I agree with you – Type 680 is a mystery; a comment from David/Matt/Jeff
would be appreciated. Type 107 – the hot water fired single effect
chiller was written in 2001, later edited in 2004; but the discussion on Type 680
I found on the web is much later. Wonder what the differences are between these
two. In any case, I do not have Type 680 in my TESS library either.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>On the COP issue - just to clarify: there are two COP terms in
the nomenclature of the absorption chiller documents – (i) COP<sub>Rated</sub>
& (ii) COP (for the device). <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoListParagraph style='margin-left:.75in;text-indent:-.5in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>(i)<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The rated COP (used in equation 679.4) that we supply to the
model as a parameter is just thermal as you said. I have highlighted in the attached
document for steam-fired chiller as an example.<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:.75in;text-indent:-.5in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>(ii)<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>However, the model calculates the actual COP of the device based
on equation 679.9 & provides as an output. As per the documentation, this
COP value considers the Q<sub>Aux</sub>. I also confirmed that the code matches
the documentation.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>CALCULATE THE RESULTANT COP OF THE MACHINE<o:p></o:p></span></i></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>IF((QAUX+QSTEAM).GT.0.) THEN<o:p></o:p></span></i></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>
COP=QCHW/(QAUX+QSTEAM)<o:p></o:p></span></i></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>
ELSE<o:p></o:p></span></i></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>
COP=0.<o:p></o:p></span></i></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#1F497D'>Ratnalee Patil<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#1F497D'>B.Arch., M.A.Sc. Engineering<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#1F497D'>Sustainable Design Analyst<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#17365D'>I</span><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#17365D'>nnovative </span><span style='font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#17365D'>D</span><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#17365D'>esign<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#3366FF'>850 West Morgan St. Raleigh, NC 27603</span><span
style='font-size:9.0pt;font-family:"Berlin Sans FB","sans-serif";color:#3366FF'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#3366FF'>Ph: (919) 832-6303 Fax: (919) 832-3339<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#17365D'><a href="http://www.innovativedesign.net/"><span
style='color:#17365D'>www.innovativedesign.net</span></a><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Mehdi Shahrestani
[mailto:mahdishahrestani@gmail.com] <br>
<b>Sent:</b> Thursday, September 15, 2011 10:18 AM<br>
<b>To:</b> 'Emilia Visek'<br>
<b>Cc:</b> trnsys-users@cae.wisc.edu<br>
<b>Subject:</b> Re: [TRNSYS-users] type680 COP_rated<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'>Dear Emilia<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'>First of all, I could not find type 680 in TESS. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'>Any way all the models of absorption chillers have some similar
approaches. It means that the cop exactly is the provided cooling divided by
used heat. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'>Please be aware that in the Qaux is not taken into account in the
cop equation (as it should not be considered based on the open literature). <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'>I checked this through the Fortran code of Types 676 to 679 and
107. You can do the same. Also you can find it in TESS documentation related to
each type. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'>But the question is still unsolved that TESS ver 17 does not have
type 680!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'>Hope it helps <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'>Mehdi<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-family:"Calibri","sans-serif";
color:blue'><o:p> </o:p></span></p>
<div>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
trnsys-users-bounces@cae.wisc.edu [mailto:trnsys-users-bounces@cae.wisc.edu] <b>On
Behalf Of </b>Emilia Visek<br>
<b>Sent:</b> 14 September 2011 20:19<br>
<b>To:</b> Ratnalee Patil<br>
<b>Cc:</b> trnsys-users@cae.wisc.edu<br>
<b>Subject:</b> Re: [TRNSYS-users] type680 COP_rated</span><o:p></o:p></p>
</div>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Dear Ratnalee,<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span lang=EN-GB>Thank you for the explanation. I believed
so, but it was not clear from TRNSYS documentation.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
</div>
<div>
<p class=MsoNormal><span lang=EN-GB>The type680 si located in HVAC TESS library
under single-effect absorption chiller hot-water fired.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
</div>
<div>
<p class=MsoNormal><span lang=EN-GB>Best regards,<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-GB>Emilia Visek<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span lang=EN-GB>On Wed, Sep 14, 2011 at 8:48 PM, Ratnalee
Patil <<a href="mailto:Ratnalee@innovativedesign.net">Ratnalee@innovativedesign.net</a>>
wrote:<o:p></o:p></span></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>Emilia,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>For the absorption chiller models I
believe the rated COP to be supplied as a parameter is thermal COP (Q<sub>cooling
output</sub>/Q<sub>heat input to generator</sub>). In the COP output from the
chiller model however, the electricity consumed by the chiller for the
operation (for pumps etc.) is taken into consideration based on the auxiliary
electric power (Q<sub>aux</sub>) supplied as one of the parameters. Thus the
output COP = Q<sub>cooling output</sub>/(Q<sub>heat input to generator + </sub>Q<sub>aux</sub>).
</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>By the way, where is this Type 680
located? I am aware of Types 676 to 679, Type 681, and Type 107 for absorption
chillers.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>Thanks.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;color:#1F497D'>Regards,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;color:#1F497D'>Ratnalee Patil</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:8.0pt;color:#1F497D'>B.Arch., <a href="http://M.A.Sc"
target="_blank">M.A.Sc</a>. Engineering</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:8.0pt;color:#1F497D'>Sustainable Design Analyst</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#17365D'>I</span><span style='font-size:10.0pt;color:#17365D'>nnovative
</span><span style='color:#17365D'>D</span><span style='font-size:10.0pt;
color:#17365D'>esign</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt;color:#3366FF'>850 West Morgan St.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt;color:#3366FF'>Raleigh, NC 27603</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt;color:#3366FF'>Ph: <a href="tel:%28919%29%20832-6303"
target="_blank">(919) 832-6303</a></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt;color:#3366FF'>Fax: <a href="tel:%28919%29%20832-3339"
target="_blank">(919) 832-3339</a></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:8.0pt;color:#17365D'><a href="http://www.innovativedesign.net/"
target="_blank"><span style='color:#17365D'>www.innovativedesign.net</span></a></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt'>From:</span></b><span style='font-size:10.0pt'> Emilia
Visek [mailto:<a href="mailto:emilia.visek@mail.polimi.it" target="_blank">emilia.visek@mail.polimi.it</a>]
<br>
<b>Sent:</b> Tuesday, September 13, 2011 12:14 PM<br>
<b>To:</b> <a href="mailto:trnsys-users@cae.wisc.edu" target="_blank">trnsys-users@cae.wisc.edu</a><br>
<b>Subject:</b> [TRNSYS-users] type680 COP_rated</span><o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Dear
all,<o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The
COPrated from type680, is thermal or electrical COP?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thank
you,<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>EV<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
</div>
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