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Kostas,<br>
Pass the Type56 outputs to Type46 for integrating and printing to
a text file.<br>
Best,<br>
david<br>
<br>
<br>
On 6/8/2012 10:11, ts0g . wrote:
<blockquote cite="mid:DUB109-W1285F744C12BABFF65D5099EAF20@phx.gbl"
type="cite">
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<br>
<div>Dear TRNSYS users ,<br>
<br>
I have imported a 3d model ,from trnsys 3d plug-in for
sketchup, into the Simulation Studio. I am using Type56 to
generate my building's air temperature ( TAIR ) ,<br>
and the sensible heating&cooling demand of airnodes (
QHEAT-QCOOL ) . I have created 5 different thermal airnodes
and my question is , which type should I <br>
use as an output in order to retrieve my results, after
simulating, in a .txt file so I can process them and compare
them with some theoretical measurements concerning <br>
these specific thermal zones.<br>
Thank you for your help !<br>
<br>
Kind regards,<br>
Kostas <br>
<br>
<br>
<br>
<br>
<br>
--Forwarded Message Attachment--<br>
From: <a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a><br>
CC: <a class="moz-txt-link-abbreviated" href="mailto:trnsys-users@cae.wisc.edu">trnsys-users@cae.wisc.edu</a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:ricardo.palomar@hotmail.com">ricardo.palomar@hotmail.com</a><br>
Date: Wed, 6 Jun 2012 14:09:13 -0500<br>
Subject: Re: [TRNSYS-users] Type 1716: ROTARY DESICANT
DEHUMIDIFIER<br>
<br>
Ricardo,<br>
Without seeing the input file, its hard to know what the
problem might be. If you can please send your project to me
(directly, please do not reply to the entire list) then I can
have a look.<br>
Kind regards,<br>
David<br>
<br>
<br>
On 6/6/2012 06:03, Ricardo Palomar Calahorra wrote:
<blockquote
cite="mid:SNT135-W4A1A97505AAB2FBA793E2ED0D0@phx.gbl">
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<div dir="ltr"> Hello !!!
<div><br>
</div>
<div>I´m trying to use the type 1716: ROTARY DESICANT
DEHUMIDIFIER, but I´m having always the same problem,
when I run the simulation the outputs 8 and 12 (<font
size="2">Regeneration air relative humidity,
and Condensate flow rate) are "0.00". And the outputs
2 and 3 (Process air outlet humidity ratio, and <span
style="text-indent:-0.31in;text-align:left">Process</span><span
style="text-indent:-0.31in;text-align:left"> air </span><span
style="text-indent:-0.31in;text-align:left">outlet</span><span
style="text-indent:-0.31in;text-align:left"> </span><span
style="text-indent:-0.31in;text-align:left">relative</span><span
style="text-indent:-0.31in;text-align:left"> </span><span
style="text-indent:-0.31in;text-align:left">humidity)
are inconsistent.</span></font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">Exist any problem running this type?</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">Thanks !!!</font></div>
</div>
<br>
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***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a moz-do-not-send="true" class="ecxmoz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
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--Forwarded Message Attachment--<br>
From: <a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a><br>
CC: <a class="moz-txt-link-abbreviated" href="mailto:trnsys-users@cae.wisc.edu">trnsys-users@cae.wisc.edu</a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:mattia.rio@mail.polimi.it">mattia.rio@mail.polimi.it</a><br>
Date: Wed, 6 Jun 2012 14:14:47 -0500<br>
Subject: Re: [TRNSYS-users] Shading groups<br>
<br>
Mattia,<br>
I think you will have to be a little creative here. Shading
devices in Trnsys3D are assumed to be opaque as you know so I
don't think you can define the shading surface in there. You
could use Type34, which models simple overhangs and/or
wingwalls. That model also assumes an opaque shader but it
gives outputs for various shading fractions and view factors.
You may be able to use those and the unshaded radiation from
your weather component to get an estimate of the radiation
that comes through your not-quite-opaque device. Lastly,
Type56 allows you to enter a shading factor for any given
window. You may be able to treat your shaders in that manner.<br>
<br>
Unfortunately, there is not a direct way to treat
semitransparent shaders unless you would care to modify
Type34.<br>
Kind regards,<br>
David<br>
<br>
<br>
On 6/6/2012 10:11, MATTIA ANDREA RIO wrote:
<blockquote
cite="mid:20120606171133.11635udywb2jwpc8@webmail-stud.polimi.it">Hi!!!
i have a little problem with my imported 3d model from
trnsys 3d plug-in for sketchup. <br>
<br>
I have posted a picture that show my 3d model in sketchup;
so, as you can see, all of the triangular surfaces (into red
circle), are made in perforated corten steel, and i need to
give a shading coefficient to their, otherwise the program
will do the simulations considering the shading surfaces
opaque; but actually they are not matt. <br>
<br>
if someone have any ideas about how I can do..... <br>
<br>
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<pre class="ecxmoz-signature">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a moz-do-not-send="true" class="ecxmoz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a moz-do-not-send="true" class="ecxmoz-txt-link-freetext" href="http://www.tess-inc.com" target="_blank">http://www.tess-inc.com</a>
<a moz-do-not-send="true" class="ecxmoz-txt-link-freetext" href="http://www.trnsys.com" target="_blank">http://www.trnsys.com</a></pre>
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From: <a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a><br>
CC: <a class="moz-txt-link-abbreviated" href="mailto:trnsys-users@cae.wisc.edu">trnsys-users@cae.wisc.edu</a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:damien.casetta@gmail.com">damien.casetta@gmail.com</a><br>
Date: Wed, 6 Jun 2012 14:27:41 -0500<br>
Subject: Re: [TRNSYS-users] Water-to-water heat pump - Heat
rate to load control<br>
<br>
Damien,<br>
In my experience, there are relatively few heat pumps
available on the market that can do what you are trying to do.
Most heat pumps have a fairly fixed capacity (some have
multiple stages) so that they have an easier time maintaining
a fixed temperature rise than they do in maintaining a fixed
temperature outlet. There is at least one notable exception to
this; an air-to-water heat pump that has a variable speed
compressor that allows it to modulate and maintain a target
outlet temperature. <br>
<br>
Type927 is a temperature level control device meaning that
it is looking for inlet water conditions on both sides and for
a control signal. If you have obtained your heating loads from
some other software tool, I would recommend that you read them
into TRNSYS using Type9 and impose them on a water stream
using Type682 from the TESS Loads and Structures library. I
would then place a thermostat sensing water return temperature
in the loop and I would use its output to turn on the loop
pump and the Type927 heat pump. You will not get a constant
supply temperature of course but in reality, a single stage
(or even multi stage) heat pump can't really give you a
constant supply temperature; it can only give you a supply
temperature that hovers around a set point. <br>
<br>
If you are using Type56 to generate your building's heating
demand, I would take it out of energy rate control (ie turn
OFF the automatic heating and cooling types in TRNBuild), and
allow the zone temperatures to float. I would then use a
thermostat watching the zone air temperature and some kind of
delivery device (a fan coil, radiant floors, etc.) to deliver
the hot water from the Type927 to the zone.<br>
<br>
Kind regards,<br>
david<br>
<br>
<br>
On 6/6/2012 12:20, Damien Casetta wrote:
<blockquote
cite="mid:CA+b-pK5xyb7k19Qy-x4a2uFB_4U3kTrP94qs=G4O26Urwy=K2w@mail.gmail.com">Hi,
<div><br>
</div>
<div>I am trying to handle this problem by controlling the
temperature. Let me remind you that I want to control the
heat load of an heat pump in heating mode. </div>
<div><br>
</div>
<div>Here is how I am trying to proceed : </div>
<div><br>
</div>
<div>- I control the temperature exiting the heat pump</div>
<div>- I fix a temperature set point (with an aquastat -
heating mode) at 50 C. </div>
<div>- I vary the supply temperature (entering the heat
pump) according to the heating demand. </div>
<div><br>
</div>
<div>The heating demand is based on hourly loads. </div>
<div><br>
</div>
<div>What do you think about it? </div>
<div><br>
</div>
<div>I am not very satisfied but I will give it a try. I am
sure there is a much simpler way to do it. </div>
<div><br>
</div>
<div><br>
</div>
<div>Thanks in advance for your help. </div>
<div><br>
</div>
<div>Best regards,<br>
<br>
<div class="ecxgmail_quote">On 1 June 2012 18:10, Damien
Casetta <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:damien.casetta@gmail.com">damien.casetta@gmail.com</a>></span>
wrote:<br>
<blockquote class="ecxgmail_quote"
style="border-left:1px #ccc solid;padding-left:1ex">Hi,
<div><br>
</div>
<div>I am modelling a ground-source heat pump system
including a water-to-water heat pump (type 927), a
borehole heat exchanger (type 557b) and a building
demand profile. </div>
<div><br>
</div>
<div>I have read a couple of messages in the archives
about this topic but I haven´t understood correctly
the few addressing my specific issue. </div>
<div><br>
</div>
<div>Here is my point. I assume the heat pump to meet
the building demand. The aim is then to force the
heat pump load and observe how the system behaves
(COP, ground loop fluid temperatures). </div>
<div><br>
</div>
<div>I would be able to do this with an external
MATLAB code (with COP values interpolated from
catalog data) but it would be a shame not to harness
TRNSYS potential (there is no need to re-invent the
wheel as I read in a previous message). </div>
<div><br>
</div>
<div>Let me put in other words: how to control a heat
pump load? </div>
<div><br>
</div>
<div>I have read about a trick to handle this, with a
"lump" temperature but I don't get the idea behind
it. Any other explanations is welcomed. </div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Thanks in advance,</div>
<div><br>
</div>
<div>Best regards,<span class="ecxHOEnZb"><font
color="#888888"><br clear="all">
<div><br>
</div>
<div><br>
</div>
-- <br>
<div><font color="#999999"><b>Damien Casetta</b></font></div>
<div><br>
</div>
<div><font color="#009900"><span
style="line-height:19px;font-size:13px;font-family:sans-serif"><b>Chalmers
University of Technology </b></span>|
Energy and Environment</font><span
style="color:rgb(153,153,153)"> </span><font
color="#999999">| Exchange student</font></div>
<div><font color="#3366FF"><b>INSA Lyon</b>
Génie Energétique et Environnement</font> <span
style="color:rgb(153,153,153)">| Elève
ingénieur</span> </div>
<div> <span style="color:rgb(153,153,153)"> <br>
<a moz-do-not-send="true" target="_blank">+46.7.60.66.31.45</a><br>
</span></div>
<div><font color="#999999"><a
moz-do-not-send="true" target="_blank">+33.6.71.78.03.75</a></font></div>
<br>
</font></span></div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div><font color="#999999"><b>Damien Casetta</b></font></div>
<div><br>
</div>
<div><font color="#009900"><span
style="font-family:sans-serif;font-size:13px;line-height:19px;background-color:rgb(255,255,255)"><b>Chalmers
University of Technology </b></span>| Energy and
Environment</font><span style="color:rgb(153,153,153)"> </span><font
color="#999999">| Exchange student</font></div>
<div><font color="#3366FF"><b>INSA Lyon</b> Génie
Energétique et Environnement</font> <span
style="color:rgb(153,153,153)">| Elève ingénieur</span> </div>
<div> <span style="color:rgb(153,153,153)"> <br>
+46.7.60.66.31.45<br>
</span></div>
<div><font color="#999999">+33.6.71.78.03.75</font></div>
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<pre class="ecxmoz-signature">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a moz-do-not-send="true" class="ecxmoz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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>
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