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<p>Jen,</p>
<p> Speaking very generally and only from my own experience,
developing a model of a physical process inherently involves
making some simplifying assumptions. A model developer can choose
to build in fewer assumptions and give the end user more
flexibility in implementing the model. The trade-off, however is
in the ease of implementing the model; the user will have to
specify more things like the inlet/outlet connections or the
controls. Alternatively, a model developer can build in more
assumptions and make the end user's life simpler. In so doing,
however, they take away some of the model's flexibility. <br>
</p>
<p> I find that in general, building simulation software tools
occupy some place on the spectrum between ultimate ease of use and
ultimate flexibility. There are building models out there in which
you specify the postal code, the building's area and its general
use category (school, office, etc.) and the model will give you a
prediction of how much energy it thinks such a building would use
annually. Very easy to implement, not very flexible. TRNSYS is, by
design, at the very flexible end of the spectrum. In my experience
if you are modeling conventional buildings with conventional (and
more to the point conventionally controlled) buildings then Trnsys
is probably not a very good option. If, however, you are modeling
a system that needs to be put together component by component so
that you can specify the specific connections and controls that
you want to use then Trnsys is a good option. <br>
</p>
<p> As a side note, we use a hybrid approach when we are dealing
with a more or less conventional building that has an innovative
central plant. In that case we will sometimes generate the
building's heating and cooling loads in other software tool and
then impose them on a central plant system that we have modeled in
Trnsys.</p>
<p>kind regards,</p>
<p> David</p>
<p> <br>
</p>
<div class="moz-cite-prefix">On 11/08/2021 19:36, Jen parken via
TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:542749949.2578767.1636421775593@mail.yahoo.com">
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<div dir="ltr" data-setdir="false">hello </div>
<div dir="ltr" data-setdir="false">I am consider simulating
solar cooling based chiller to compare with conventional ones.</div>
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<div style="font-family:'Helvetica Neue', Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;">
<div> On Monday, November 8, 2021, 10:48:23 AM EST, Jeff
Thornton <a class="moz-txt-link-rfc2396E" href="mailto:thornton@tess-inc.com"><thornton@tess-inc.com></a> wrote: </div>
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<div id="yiv0119379298">
<div>Jen - it would really help to know what you’ll be
modeling in TRNSYS and what other tools you are
considering.
<div><br clear="none">
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<div>Jeff <br clear="none">
<br clear="none">
<div dir="ltr">Sent from my iPhone</div>
<div dir="ltr">
<div id="yiv0119379298yqtfd94327"
class="yiv0119379298yqt9195474946"><br
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<blockquote type="cite">On Nov 8, 2021, at 8:17
AM, Jen parken via TRNSYS-users
<a class="moz-txt-link-rfc2396E" href="mailto:trnsys-users@lists.onebuilding.org"><trnsys-users@lists.onebuilding.org></a>
wrote:<br clear="none">
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Helvetica, Arial, sans-serif;font-size:16px;"
class="yiv0119379298ydp726b2a01yahoo-style-wrap">
<div dir="ltr">Hello everyone.</div>
<div dir="ltr">I would like to know if there
is any resource define the difference
between using TRNSYS and other modeling
tools.</div>
<div dir="ltr">I mean I am trying to convince
my supervisor to use TRNSYS because I
believe it is more accurate but I really
need to defend my point with more accurate
and specific answers . </div>
<div dir="ltr">thanks </div>
<div dir="ltr">Jen </div>
</div>
</div>
<span>_______________________________________________</span><br
clear="none">
<span>TRNSYS-users mailing list</span><br
clear="none">
<span><a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a></span><br
clear="none">
<span><a class="moz-txt-link-freetext" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a></span>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
TRNSYS-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a>
<a class="moz-txt-link-freetext" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a>
</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
<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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