<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#ffffff">
Doms,<br>
I am not aware of a limitation with respect to the number of time
steps. There is (based on what another user reported) a limit as to
the number of characters on the clipboard that can be passed between
EES and TRNSYS. In their case, there is an illegal character being
passed through the clipboard (we haven't debugged the problem yet).
I wonder if there is a conditions after 66000 time steps that
results in EES being unable to solve.<br>
Kind regards,<br>
David<br>
<br>
<br>
On 2/24/2011 08:17, Doms Joris wrote:
<blockquote
cite="mid:8C2EF60B4FA8D34B9127CD88813A1F811F3992BB37@vitomail3.vito.local"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<meta content="MSHTML 6.00.6002.18357" name="GENERATOR">
<div><font color="#000000" face="Tahoma" size="2">David,</font></div>
<div> </div>
<div><font face="tahoma" size="2">Thank you for the reply. The EES
project was defenately openening and closing, but EES itself
stayed open. I fixed this problem now with changing the
pad for the EES project from</font></div>
<div><font face="tahoma" size="2">"c:\xxx\xxx\hydraulics\EES.ees"
to "\hydrolics\EES.ees".</font></div>
<div> </div>
<div><font face="tahoma" size="2">But now it seems that EES-TRNSYS
coupling has a limited number of outputs, is this correct?
When I run a long simulation with alot of timesteps, the
simulation stops after a while, I think it is after 66000
timesteps with 20 inputs and 40 outputs with the EES-TRNSYS
coupling. Is there a solution for this?</font></div>
<div> </div>
<div><font face="tahoma" size="2">Using another type is no option
as I need to make calcultation with EES at every timestep.</font></div>
<div> </div>
<div><font face="tahoma" size="2">Many thanks</font></div>
<div> </div>
<div><font face="tahoma" size="2">Joris Doms</font></div>
<div id="divRpF85713" style="direction: ltr;">
<hr>
<font face="Tahoma" size="2"><b>Van:</b> David BRADLEY
[<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>]<br>
<b>Verzonden:</b> dinsdag 22 februari 2011 23:40<br>
<b>Aan:</b> Doms Joris<br>
<b>CC:</b> <a class="moz-txt-link-abbreviated" href="mailto:trnsys-users@cae.wisc.edu">trnsys-users@cae.wisc.edu</a><br>
<b>Onderwerp:</b> Re: [TRNSYS-users] Problems with calling EES
(Type66a)<br>
</font><br>
</div>
<div>Joris,<br>
It isn't actually the opening and closing that takes time (EES
stays running the whole time). The slowness is the EES
calculation time and the fact that EES is called at every single
timestep and at every single iteration within a timestep of your
TRNSYS simulation. There are a few different versions of Type66
that allow you to avoid calling EES whenever possible (basically
an input that is an on/off switch for the EES calculations). If
you know that your EES program doesn't have to be called
(because the device that it models is inactive) then you can
"turn off" the call to Type66 and save some time. Take a look at
the EES example in the ..\TrnsysXX\Examples\Calling_EES\
directory; all the different options are shown in there.<br>
Kind regards,<br>
David<br>
<br>
<br>
On 2/20/2011 15:43, Doms Joris wrote:
<blockquote>
<style title="owaParaStyle"><!--P {
MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px
}
--></style>
<div>Dear TRNSYS users,</div>
<div> </div>
<div><font face="times new roman">When simulating an applied
thermal system, I'm using EES for the hydronic part. I
programmed the hydronic circuit in EES and coupled it with
TRNSYS via Type 66a. This coupling works fine, but;</font></div>
<div> </div>
<div><font face="times new roman">The problem is that the
simulation runs very slow. Every timestep that TRNSYS
calls EES, the EES project is opened and closed. Is there
a way to set some settings so EES isen't closed and
reopened each time, this would minimize the solution time
alot.</font></div>
<div> </div>
<div><font face="times new roman">Thanks on advance</font></div>
<div> </div>
<div><font face="times new roman">Joris Doms</font></div>
<br>
<hr>
<font face="Tahoma" size="2"><font color="#0000ff">This
e-mail, any attachments and the information it contains
are confidential and meant only for the use of the
addressee(s) only. Access to this e-mail by anyone other
than the addressee(s) is unauthorized. If you are not the
intended addressee (or responsible for delivery of the
message to such person), you may not use, copy, distribute
or deliver to anyone this message (or any part of its
contents) or take any action in reliance on it. In such
case, you should destroy this message and notify the
sender immediately. If you have received this e-mail in
error, please notify us immediately by e-mail or telephone
and delete the e-mail from any computer.<br>
All reasonable precautions have been taken to ensure no
viruses are present in this e-mail and its attachments.
As our company cannot accept responsibility for any loss
or damage arising from the use of this e-mail or
attachments we recommend that you subject these to your
virus checking procedures prior to use.<br>
</font></font>
<hr>
<pre><fieldset class="mimeAttachmentHeader"></fieldset>
_______________________________________________
TRNSYS-users mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@cae.wisc.edu">TRNSYS-users@cae.wisc.edu</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://mailman.cae.wisc.edu/listinfo/trnsys-users">https://mailman.cae.wisc.edu/listinfo/trnsys-users</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
</div>
<!--[object_id=#vito.be#]-->
<p align="left"><font face="Tahoma" size="2"><font color="#0000ff">
<hr>
This e-mail, any attachments and the information it contains
are confidential and meant only for the use of the
addressee(s) only. Access to this e-mail by anyone other
than the addressee(s) is unauthorized. If you are not the
intended addressee (or responsible for delivery of the
message to such person), you may not use, copy, distribute
or deliver to anyone this message (or any part of its
contents) or take any action in reliance on it. In such
case, you should destroy this message and notify the sender
immediately. If you have received this e-mail in error,
please notify us immediately by e-mail or telephone and
delete the e-mail from any computer.<br>
All reasonable precautions have been taken to ensure no
viruses are present in this e-mail and its attachments. As
our company cannot accept responsibility for any loss or
damage arising from the use of this e-mail or attachments we
recommend that you subject these to your virus checking
procedures prior to use.<br>
<hr>
</font></font></p>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
</body>
</html>