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Sabine,<br>
<br>
<blockquote
cite="mid:7F4254B1CE71C84596250D072736AF8915DE49@SRV503.tudelft.net"
type="cite">
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1. <u>it takes two timesteps for the ideal heating to reach the
required setpoint</u>.. <br>
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style="margin: 0cm 0cm 0pt; text-indent: -18pt;"><font face="Arial"
size="2"><span style="font-size: 10pt; font-family: Tahoma;"
lang="EN-GB"><span style=""><span
style="font-family: 'Times New Roman'; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><font
size="2"><font face="Tahoma">Is this normal or what am I doing wrong?</font></font></span></span></span></font></p>
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if you have limited the capacity of the heating type in TRNBuild, it
could take some time for the building to reach its setpoint. If you
have unlimited heating capacity then it should reach the new heating
temperature instantly. However, Type65 (the online plot) only plots one
point per time step and it draws a line between points; looking at the
figures that you attached, I think you are just seeing Type65's
interpolation. If you hold down both the SHIFT and CTRL keys at the
same time and move your mouse around the plot, you'll see the ACTUAL
value of each output (not the interpolated value that Type65 is showing
you. You can prove it to yourself as well by changing to a shorter
timestep - you'll see that it appears now as though it takes less time
to reach setpoint.<br>
<blockquote
cite="mid:7F4254B1CE71C84596250D072736AF8915DE49@SRV503.tudelft.net"
type="cite">
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<p class="MsoNormal" dir="ltr"
style="margin: 0cm 0cm 0pt; text-indent: -18pt;"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><span
style=""><span
style="font-family: 'Times New Roman'; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><font
face="Arial" size="2"><font size="2"><font face="Tahoma">2. When
using a schedule in trnbuild (so not in the operative correction trick
of above), s</font></font></font></span></span></span><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><font
face="Arial" size="2">omehow <u>the heating only switches on at
exactly the time of the switch</u> (in my case 7 h and 17 h), while I
assumed the schedule to mean that at the new time the new temperature
must be obtained (see attached document). The heating switches OFF at
exactly the changing time, so it then takes the new setpoint
temperature. (see figure 2).</font></span></p>
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again, I think this is purely a matter of how the online is plotting
the results (one point per timestep).<br>
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cite="mid:7F4254B1CE71C84596250D072736AF8915DE49@SRV503.tudelft.net"
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<p class="MsoNormal" dir="ltr"
style="margin: 0cm 0cm 0pt; text-indent: -18pt;"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><font
face="Arial" size="2">3. <span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB">Does anyone
know why the temperature seems to be fluctuating a little (in other
words: it is not a smooth line) as soon as the heating turns off?<o:p></o:p></span></font></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><font
face="Arial" size="2">Also when using a smaller timestep the line is
not smooth, but the temperatures stay constant during a hour, so the
line looks like a staircase.. <o:p></o:p></font></span></p>
<p class="MsoNormal" dir="ltr"
style="margin: 0cm 0cm 0pt; text-indent: -18pt;"><span
style="font-size: 10pt; font-family: Tahoma;" lang="EN-GB"><font
face="Arial" size="2"> (note: the non-smooth line occurs when the
heating is OFF)<br style="">
</font></span></p>
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I think Arie's response is the most probable one here.<br>
Best,<br>
David<br>
<br>
<font size="2"><font face="Arial"><br>
<br>
</font></font>
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