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Aleck,<br>
The steps that you are seeing in some of the temperature plots are
probably a result of timebase that you have chosen for the walls in
your building. Wall response factors are computed for a series of
discrete times extending backwards through the history of the wall.
If you use a simulation time step that is less than the wall
timebase then the conduction transfer function has a constant value
for a few timesteps until the end of the next timebase is reached,
then they change and you end up seeing that stepped response. The
ideal solution is to use a wall timebase that is as close as
possible to your simulation timestep. That is not always feasible
though; so I typically use a 0.25hr timebase and a 1 or 5 minute
time step.<br>
best,<br>
david<br>
<br>
<br>
On 6/21/2012 10:40, Yujun TAO wrote:
<blockquote
cite="mid:1340293259.59055.YahooMailNeo@web133204.mail.ir2.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff; font-family:times
new roman, new york, times, serif;font-size:12pt">
<div>Dear trnsys users,</div>
<div>I have a problem about the two tempreatures simulated:
TiZONE1 and TiZONEPLATRE, in the graphic of TRNEXE, the two
curves follow well at the big tendance with the
experimentation's results, but at detail's view, there are
somes escalades, i don't understand.</div>
<div>Could someone tell me why?</div>
<div>Here are jointed files to check<br>
</div>
<div>Kind regards<br>
</div>
<div>Aleck TAO<br>
</div>
</div>
<br>
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<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>
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