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Marius,<br>
Type65 prints the value of outputs at each time step in the
simulation. Almost all TRNSYS outputs are the average value over the
previous time step. If you use Type25 and tell it to print at the same
interval (ie every time step), it should give you the same results as
Type65. It sounds from what you describe, however as though TRNSYS is
not using quite the same time step that you think it is. It is always
best to choose a time step that can be specified as a non repeating
decimal (0.1, 0.125, 0.25, etc.). If you want to use a 1 or 5 minute
timestep, the safest way to do it is to define an equation:<br>
<br>
EQUATIONS 1<br>
DELT = 1/60<br>
<br>
and then change your time step specification from "hours" to "string"
and enter the name of your equation "DELT." Use "DELT" again when
specifying the printing interval in Type25. <br>
<br>
I have noticed some problems from time to time when I select "minutes"
for the time step designation in Studio because the repeating decimal
gets truncated at some point and you end up with a time step that is
interpreted as <br>
<br>
0.083330<br>
<br>
instead of <br>
<br>
0.0833333333333333333333333333333....<br>
<br>
If none of the above solves the problem please send me the project and
I'll see if I can detect the problem.<br>
Best,<br>
David<br>
<br>
<br>
On 6/17/2010 09:39, Marius Müller wrote:
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<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">Hello
everybody.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">I have the
problem that I use different printer and
export their plot in excel, and they do not show the same results.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">I use
type65c to plot every time step and type25 to
plot integrated results in the end. <o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">But the
results from type25 are not the same as in
type65c!<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">It seems
type25 does not cover the whole simulation time.
When I i.e. print the time values with both types, type25 should show
only the
last value when I do not integrate. Am I right? For short periods like
a week
it is working, but when I simulate for a longer time, type25 always
shows a
time value a few hundred hours before the last value of type65c.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">Any idea
what could cause this? I set the value for
the printing interval in type25 to zero, so this type should just plot
at the
end..<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">Thanks for
your help,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">Marius<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB"><o:p> </o:p></span></font></p>
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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:bradley@tess-inc.com">bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
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