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Amr,<br>
Please keep in mind that this is a user forum, not a technical
support hotline. The idea of it is for users to assist each other
although the developers do try and provide assistance to the user
community here as well. If you need assistance quickly, I would
recommend that you contact your distributor directly. Also, we are
no longer officially supporting Trnsys version 16 as version 17 was
released in 2010. Your questions, however, apply to both versions. <br>
<br>
1. Trnsys does not have one single method for computing ground heat
transfer; it depends on which component (which Type) you are using.
The ground coupling components in the TESS Libraries node the ground
and use a finite difference approach to model the conduction of
energy through the ground. <br>
2. I am not sure whether these are going to do you much good; not
because there is no way to connect them to a building but because
what happens in the building influences the ground temperature
profile, which in turn influences the building. If you have measured
the ground temperature profile in undisturbed ground (ie away from a
building) then you can apply this profile for the far-field
temperature using a ground coupling model. If you do not have a
ground coupling model then there is a lot of literature in the field
on how to appropriately couple a ground temperature to a building.
These range from simply connecting a deep-earth temperature to the
back side of the building floors to defining an equivalent thermal
resistance to the back side of the ground slab and connecting the
other side of the resistive layer to the ambient temperature. I
would recommend that you look at the literature and choose a method
that is appropriate to the data that you have and that is suitable
to what you are trying to model. <br>
3. If you are using Type56, look at the QCOMI and QCOMO outputs for
the appropriate surfaces in your building.<br>
<br>
Best,<br>
David<br>
<br>
<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 2/8/2013 03:26, AMR sayed wrote:<br>
</div>
<blockquote
cite="mid:1360315575.88933.YahooMailNeo@web121304.mail.ne1.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff; font-family:times
new roman, new york, times, serif;font-size:24pt">
<div><span></span></div>
<div><span>Dear Mr. David & Mr.Matt Duffy</span></div>
<div><span></span> </div>
<div style="font-family: times new roman, new york, times,
serif; font-size: 24pt;">
<div style="font-family: times new roman, new york, times,
serif; font-size: 12pt;">
<div id="yiv188045600">
<div>
<div style="color: rgb(0, 0, 0); font-family: times new
roman, new york, times, serif; font-size: 24pt;
background-color: rgb(255, 255, 255);">
<div><span>I have two question please:</span></div>
<div><span><em><u>Sorry i send it yesterday but i
didn't get the answer</u></em></span></div>
<div><span>1-I want to know how Trnsys calculate heat
transfer through the ground ( the method). </span></div>
<div><span>2-I have the temperature of the ground at
depth 0.5m every month. How i can input these
temperature in TRNSYS 16.1.</span></div>
<div><span>3- How i can know the amount of heat
trnsfer from the ground</span></div>
<div><span></span> </div>
<div><span>Best regards</span></div>
<div><span>Amr Abdallah</span></div>
<div><br>
<br>
</div>
</div>
</div>
</div>
<br>
<br>
</div>
</div>
</div>
<br>
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</pre>
</blockquote>
<br>
<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>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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