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Fabio,<br>
It depends on how the ORC has been modeled. If you are using a non
standard Type that was developed to model an ORC then it may be as
simple as changing a parameter. If the ORC is modeled by a series of
standard components that make calls to TRNSYS's STEAM routines then
changing fluids is very difficult; you would need to modify the
Types so that they call a routine that generates all of the state
properties for the ORC fluid that you want to work with.<br>
<br>
There are a few other possibilities as well:<br>
One alternative is that you can model the ORC a bit more simply
using a performance map approach. In this approach, you would use
Type42, which simply reads and interpolates a data file. You would
have to identify the independent variables of the ORC (source
temperature, sink temperature, fluid flow rate, etc.). You would
have to then provide the values of the dependent variables (you have
to identify these as well) for each possible combination of
independent variables. <br>
<br>
Another alternative is to model the ORC in either Excel or EES and
then call the model from TRNSYS using Type62 or Type66. EES would
probably be the easiest since it has a large library of
thermophysical properties built into it.<br>
<br>
Kind regards,<br>
David<br>
<br>
<br>
<br>
On 11/25/2011 02:57, <a class="moz-txt-link-abbreviated" href="mailto:fapilt@libero.it">fapilt@libero.it</a> wrote:
<blockquote
cite="mid:30299127.4417191322211464555.JavaMail.defaultUser@defaultHost"
type="cite">
<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px;
margin-left: 0px; padding-top: 0px; padding-right: 0px;
padding-bottom: 0px; padding-left: 0px; ">Dear all,</p>
<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px;
margin-left: 0px; padding-top: 0px; padding-right: 0px;
padding-bottom: 0px; padding-left: 0px; ">I'm a beginner of
this program and I would like to know how can i change the fluid
in a rankine cycle from water to a specific ORC (organic rankine
cycle)?</p>
<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px;
margin-left: 0px; padding-top: 0px; padding-right: 0px;
padding-bottom: 0px; padding-left: 0px; ">Please answer me, i
need for my thesis.</p>
<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px;
margin-left: 0px; padding-top: 0px; padding-right: 0px;
padding-bottom: 0px; padding-left: 0px; "><br>
</p>
<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px;
margin-left: 0px; padding-top: 0px; padding-right: 0px;
padding-bottom: 0px; padding-left: 0px; ">Would be very grateful
for your help</p>
<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px;
margin-left: 0px; padding-top: 0px; padding-right: 0px;
padding-bottom: 0px; padding-left: 0px; "><br>
</p>
<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px;
margin-left: 0px; padding-top: 0px; padding-right: 0px;
padding-bottom: 0px; padding-left: 0px; ">Regards</p>
<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px;
margin-left: 0px; padding-top: 0px; padding-right: 0px;
padding-bottom: 0px; padding-left: 0px; ">Fabio</p>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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</blockquote>
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<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>
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