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Marko,<br>
Equations are assessed at every timestep (every iteration,
actually) and integrators are called after all of the components
(and equations) have reached convergence at a given time step. <br>
kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 02/07/2016 01:53, Marko Mancic
wrote:<br>
</div>
<blockquote
cite="mid:422586592.409504.1454831609863.JavaMail.yahoo@mail.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff;
font-family:verdana, helvetica, sans-serif;font-size:16px">
<div><span></span></div>
<div id="yiv7179004241yui_3_16_0_1_1454783917989_3062">Hi,</div>
<div id="yiv7179004241yui_3_16_0_1_1454783917989_3074"><br
id="yui_3_16_0_1_1454824176818_9107">
</div>
<div id="yiv7179004241yui_3_16_0_1_1454783917989_3075" dir="ltr">I
am making some annual system performance analysis, and I am
not sure about how Trnsys performes some calculations.</div>
<div id="yiv7179004241yui_3_16_0_1_1454783917989_3121" dir="ltr"><br
id="yui_3_16_0_1_1454824176818_9111">
</div>
<div id="yiv7179004241yui_3_16_0_1_1454783917989_3122" dir="ltr">I
am using Type24 to integrate some outputs over a time interval
from simulation START to STOP (i.e. one year). I would like to
make some simple equations using a few of the Type24 outputs
and compare some values .</div>
<div id="yiv7179004241yui_3_16_0_1_1454783917989_3356" dir="ltr"><br
id="yui_3_16_0_1_1454824176818_9115">
</div>
<div id="yiv7179004241yui_3_16_0_1_1454783917989_3357" dir="ltr"><br
id="yui_3_16_0_1_1454824176818_9118">
</div>
<div id="yiv7179004241yui_3_16_0_1_1454783917989_3148" dir="ltr">I
am not certain how Trnsys performes these calculations.</div>
<div id="yui_3_16_0_1_1454824176818_9448" dir="ltr"><br>
</div>
<div id="yui_3_16_0_1_1454824176818_9457" dir="ltr">Does Type24
integrate over a given time interval first, and mathematical
operations defined by the equations are carried out with the
integrated value at the end of that time interval (at the end
of the simulation/year), or, are these operations carried out
as defined by the equations for every timestep and then
summed?</div>
<div id="yui_3_16_0_1_1454824176818_9458" dir="ltr"><br>
</div>
<div id="yui_3_16_0_1_1454824176818_9459" dir="ltr">Marko</div>
</div>
<br>
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<br>
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</pre>
</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>
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