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Ravindra,<br>
The answer to your question depends somewhat on which models you
are talking about. Most TRNSYS models assume that the fluid
properties (usually density and specific heat) are constant over the
temperature range that they will experience during the simulation.
The assumption goes all the way in to the derivation of the
equations used in the model. If you need a piece of equipment whose
working fluid's properties must change with temperature then you
have to rederive the basic equations and rewrite or revise the
model. There are some models in the TESS High Temperature Solar
library that allow you to enter coefficients that describe how the
properties of the working fluid vary with temperature.<br>
kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 03/15/2016 07:36, v ravindra wrote:<br>
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<div dir="ltr">In a solar domestic hot water system is it possible
to change the properties of the working fluid. I mean the water
will be heated but the secondary fluid is changed. I want to use
supercritical CO2 as the working fluid. Please guide me in this
thing.
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<div dir="ltr">V.Ravindra<br>
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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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