<html>
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
</head>
<body>
<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><br>
</p>
<div class="moz-cite-prefix">On 03/13/2020 04:49, Audun Bull
Kristiansen via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:HE1PR01MB3003A813B5E06AC13BD6A03F9DFA0@HE1PR01MB3003.eurprd01.prod.exchangelabs.com">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<meta name="Generator" content="Microsoft Word 15 (filtered
medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:DengXian;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"\@DengXian";
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:730468270;
mso-list-type:hybrid;
mso-list-template-ids:1855777126 67698703 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l0:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level2
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level3
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level4
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level5
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level6
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level7
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level8
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level9
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style>
<div class="WordSection1">
<p class="MsoNormal">I have three questions:</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><span
style="mso-bookmark:_MailAutoSig"></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<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
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>
</body>
</html>