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Ayman,<br>
All TRNSYS types have initial values. The initial values are set
by the user and as the driving forces of the system begin to change
(ambient temperature, solar radiation, occupancy, etc) start to
change then TRNSYS beings to iterate. In high-mass models (such as
buildings and thermal storage tanks) the initial values have an
important impact on their behavior as the simulation starts going.
Iterating more in the first hour isn't going to change anything; the
models still start out with those initial values and none of the
driving forces have changed yet. If you are concerned about the
impact of initial values then the best approach may be to run your
simulation for two simulation years and only take the results from
the second year.<br>
Best,<br>
David<br>
<br>
<br>
On 8/3/2011 13:02, Ayman Sarwa wrote:
<blockquote
cite="mid:1312394567.99394.YahooMailNeo@web161602.mail.bf1.yahoo.com"
type="cite">
<div style="color: rgb(0, 0, 0); background-color: rgb(255, 255,
255); font-family: arial,helvetica,sans-serif; font-size: 12pt;">
<div><span class="Apple-style-span" style="font-family: Tahoma;
font-size: 13px;">Hi All
<div>I am simulating a Zone with Trnsys & TrnBuild to
get the Floating Temperature (i.e there is no heating or
cooling ) , I note that the initial value of temperature
entered into TrnBuild for this zone has big influences on
the first few hours of simulation. I use Trnsys 17.</div>
<div>my question is that, Is there method to make
Trnsys simulates or makes initial iterations for the first
hour on simulation and then complete the dynamic
simulation? <br>
<div>thanks in advance <br>
<div class="BodyFragment"><font size="2"><span
style="font-size: 10pt;">
<div class="PlainText">-- <br>
Regards<br>
Ayman Mohamed</div>
</span></font></div>
</div>
</div>
</span></div>
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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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