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<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>Dear TRNSYS
Users</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>I have just
discovered there is a time step in TRNBUILD which is different from the
time step in the Studio (deck).</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>I ha<SPAN
class=745192409-01102008>d</SPAN> run a lot of simulations <SPAN
class=448235009-01102008><FONT color=#0000ff><FONT color=#000000>with a
</FONT></FONT></SPAN>TRNBUILD <SPAN class=448235009-01102008><FONT
color=#000000>time step of</FONT></SPAN> 1 hour and<SPAN
class=448235009-01102008><FONT color=#0000ff> <FONT
color=#000000>a</FONT></FONT></SPAN> Studio <SPAN
class=448235009-01102008><FONT color=#0000ff><FONT color=#000000>time
step</FONT> </FONT></SPAN>really lower (30 seconds, 1 minute, 5
minutes<SPAN class=448235009-01102008><FONT color=#0000ff><FONT
color=#000000> )</FONT> </FONT></SPAN>. These simulations
seemed quite good and worked well if we put an Input Value Recall
(Type 93) between the Building outputs and some other
components.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>I have now changed
the time step in TRNBUILD (0.1 hour => I couldn't go lower) and changed the
Studio time step to 0.1 hour.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>I can see
differences, but they are not big : less than 2% for a total consumption of the
year.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><SPAN class=201562107-01102008><FONT face=Arial><FONT size=2>The problem is
that I am studying strategies of heating regulations. So<SPAN
class=745192409-01102008>, I need short time steps to see if my regulation
strategy is good.</SPAN></FONT></FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008></SPAN></FONT><FONT
face=Arial size=2><SPAN class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>I have 2 questions
:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><SPAN class=201562107-01102008><FONT face=Arial><FONT size=2>- Do you think
my simulations already run with different time steps between TRNBUILD and the
Studio are wrong ?<SPAN class=745192409-01102008> not realist
?</SPAN></FONT></FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>- If the time steps
of the Studio is lower than the TRNBUILD <SPAN
class=745192409-01102008>time step</SPAN>, what information / instructions
are given by the studio to TRNBUILD ? </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>For exemple I have
calculated <SPAN class=745192409-01102008>with the Studio </SPAN>every
minute the air temperature to blow into a room in the Studio, the TRNBUILD time
step is 1h : what is the air temperature used in TRNBUILD : the mean of the
temperatures calculated every minutes ? only the temperature calculated at 60
minutes ? or an other one ?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>Thank you for your
help</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=201562107-01102008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=201562107-01102008>Kind
regards,</SPAN></FONT></DIV></DIV>
<DIV> </DIV>
<DIV align=left><IMG alt="" hspace=0 src="cid:284310112@01102008-1AF5"
align=baseline border=0></DIV>
<DIV align=left>
<DIV align=left><STRONG><FONT face=Arial color=#0000cc size=2>REAL
Thomas</FONT></STRONG></DIV>
<DIV align=left><FONT face=Arial size=2>Ingénieur Recherche</FONT>
<DIV><FONT face=Arial size=2>Research Engineer</FONT></DIV>
<DIV><FONT face=Arial size=2><A title=mailto:lefebvre-camille@aldes.com
href="mailto:real-thomas@aldes.com">real-thomas@aldes.com</A></FONT><FONT
face=Arial size=2><BR>Tel : 05.61.24.95.65 - Fax : 05.61.24.95.69</FONT></DIV>
<DIV><FONT face=arial size=1><FONT size=2><A title=http://www.aldes.com/
href="http://www.aldes.com/">www.aldes.com</A></FONT></FONT></DIV>
<DIV><FONT face=arial size=1> </DIV></FONT></DIV>
<DIV align=left><SPAN
style="FONT-SIZE: 18pt; COLOR: #006600; FONT-FAMILY: Webdings">P
</SPAN><B><I><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #006600; FONT-FAMILY: 'Arial','sans-serif'">Afin
de contribuer au respect de l'environnement, merci de n'imprimer cet e-mail que
si nécessaire.</SPAN></I></B><SPAN
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