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<p>Audun,</p>
<p> There is a component called Type42 in the standard library that
is designed to read a generic performance map. If you have
performance data for the dehumidifier that you want to use
(capacity and COP as a function of indoor drybulb and RH for
instance) then you can use Type42 to read and interpolate it. You
would probably have to also one or more Type33 psychrometrics
components for determine all the conditions of the outlet air.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 03/14/2020 03:06, Audun Bull
Kristiansen wrote:<br>
</div>
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<p class="MsoNormal">Thanks for the good advice, David! I
implemented Type 168. My university only purchased
<i>High Temp. Solar Component Library</i> and <i>Cogeneration
Component Library </i>
from the TESS Component Libraries, it seems. I guess I will
have to ask them if they can purchase
<i>HVAC Component Library</i> if I shall include
dehumidification, or is there any other component from TRNSYS
18 or the TESS libraries I mentioned that we already have that
I can use for this simple building?</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Audun</p>
<p class="MsoNormal"><o:p> </o:p></p>
<div
style="mso-element:para-border-div;border:none;border-top:solid
#E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="border:none;padding:0in"><b>Fra: </b><a
href="mailto:d.bradley@tess-inc.com"
moz-do-not-send="true">David BRADLEY</a><br>
<b>Sendt: </b>Friday, March 13, 2020 kl. 11:22 PM<br>
<b>Til: </b><a
href="mailto:trnsys-users@lists.onebuilding.org"
moz-do-not-send="true">TRNSYS users mailing list at
OneBuilding.org</a><br>
<b>Kopi: </b><a href="mailto:audun.bull@hotmail.com"
moz-do-not-send="true">Audun Bull Kristiansen</a><br>
<b>Emne: </b>Re: [TRNSYS-users] Dehumidification and
natural ventilation</p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Audun.</p>
<p>1. There are a number of dehumidifier models available in
the TESS HVAC library.</p>
<p>2. and 3. Since you are dealing with a relatively simple
shape of building, you might look at Type168 (if you are using
Trnsys18). That model is a good bit simpler to implement than
either TRNFlow or CONTAM. If it is too simplistic then it
might at least give you an idea as to whether natural
ventilation is feasible. If it is, then you could move on to
one of the more complex tools. My preference is for CONTAM but
that is really only because I started out using CONTAM and so
am more familiar with it. One reason to use TRNFlow, though,
would be that you can define CO2 as a "contaminant" in TRNFlow
and track its concentration level.</p>
<p>kind regards,</p>
<p> David</p>
<p><o:p> </o:p></p>
<div>
<p class="MsoNormal">On 03/13/2020 04:49, Audun Bull
Kristiansen via TRNSYS-users wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">I have three questions:<o:p></o:p></p>
<ol type="1" start="1">
<li class="MsoListParagraph" style="mso-list:l0 level1 lfo1">Is
it possible to model a dehumidifier (stand-alone room unit
as in the attached picture) in TRNSYS? I model a tiny home
made from a single shipping container with an air-to-air
heat pump (Type 119c). During the summer I lower the
temperature to dehumidify the air, but when there isn’t
any cooling need in the room it would be good to have an
option to dehumidify the air without cooling the entire
room.
<o:p></o:p></li>
<li class="MsoListParagraph" style="mso-list:l0 level1 lfo1">The
container has a glass door and two windows, so it is a
good potential to use natural ventilation for cooling part
of the year. Can you give me some recommendation on how to
model this when my main goal is to study changes in indoor
temperature and cooling load? I have TRNFlow. I also see
that some researchers use a co-simulation with CONTAM Type
97 or Type 98. For now I modelled it as another
ventilation component with zero SFP in Type 56 with an
input that is based on time, indoor temperature and
ambient temperature from a calculator.<o:p></o:p></li>
<li class="MsoListParagraph" style="mso-list:l0 level1 lfo1">It
would also be nice to have a report of the CO2
concentration in the room, to see if the ventilation is
sufficient. But I can not see that I can select that as
output in TRNSYS?<o:p></o:p></li>
</ol>
<p class="MsoNormal"><a name="_MailAutoSig"
moz-do-not-send="true">Kind regards Audun <o:p></o:p></a></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig">Ph.D.
student at Shanghai Jiao Tong University</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________</pre>
<pre>TRNSYS-users mailing list</pre>
<pre><a href="mailto:TRNSYS-users@lists.onebuilding.org" moz-do-not-send="true">TRNSYS-users@lists.onebuilding.org</a></pre>
<pre><a href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org" moz-do-not-send="true">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a></pre>
</blockquote>
<pre>-- </pre>
<pre>***************************</pre>
<pre>David BRADLEY</pre>
<pre>Principal</pre>
<pre>Thermal Energy Systems Specialists, LLC</pre>
<pre>3 North Pinckney Street - suite 202</pre>
<pre>Madison, WI 53703 USA</pre>
<pre><o:p> </o:p></pre>
<pre>P:+1.608.274.2577</pre>
<pre>F:+1.608.278.1475</pre>
<pre><a href="mailto:d.bradley@tess-inc.com" moz-do-not-send="true">d.bradley@tess-inc.com</a></pre>
<pre><o:p> </o:p></pre>
<pre><a href="http://www.tess-inc.com" moz-do-not-send="true">http://www.tess-inc.com</a></pre>
<pre><a href="http://www.trnsys.com" moz-do-not-send="true">http://www.trnsys.com</a></pre>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
</div>
</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
F:+1.608.278.1475
<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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