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JRR wrote;<br>
<br>
In Energy Plus you could put a purchased air node on the EAT and
then discount it via its separate <br>
meter after the run is done....<br>
<br>
Steve Mignogna wrote:
<blockquote
cite="mid:e160adb20902180822v1a42dd54s70c74c3bf4f2d208@mail.gmail.com"
type="cite">Vishnuraj-<br>
<br>
This is very difficult and may not lead to the correct results, but one
method would be to manually edit the weather file. You would need to
change the temperatures so that the outdoor air that is pulled into the
system would be at the temperature of the earthduct preconditioned
air. However, I would not recommend doing this without testing to see
how it changes the other aspects of the simulation.<br>
<br>
I have seen earthducts modeled correctly in both MATLAB and TRNSYS but
I have not successfully modeled it within eQuest.<br>
<br>
-- <br>
Steve Mignogna<br>
Atelier Ten<br>
<br>
<br>
<br>
<div class="gmail_quote">On Wed, Feb 18, 2009 at 2:48 AM, Vishnuraj
Nair <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:vishnu@kalpakrit.com">vishnu@kalpakrit.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div link="blue" vlink="purple" lang="EN-US">
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<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Hi friends,</span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">I am trying to model an
Earth Air Tunnel (EAT) system that
is being used in a school for passive precooling.</span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">During summer first the
air is pre cooled using the EAT and
then evaporative cooling is done before being circulated into the zone.</span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">During monsoon again
precooling is done using EAT and then chillers
are being used for further cooling and dehumidification.</span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Does anyone have any idea
as to how to calculate and
incorporate the degree of precooling that is achieved by the EAT into
the eQuest
model.</span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Any help would be greatly
appreciated. Thanks</span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Vishnuraj Nair</span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Kalpakrit Sustainable
Environments Pvt. Ltd. </span></font><font face="Garamond" size="2"><span
style="font-size: 10pt; font-family: Garamond;"></span></font></p>
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style="font-size: 10pt; font-family: Arial;">New Delhi</span></font><font
face="Garamond" size="2"><span
style="font-size: 10pt; font-family: Garamond;"></span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Tel: +91.124.4309490-92
Ext: 312 , Fax: +91.124.4309493</span></font></p>
<p><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">E-mail : <a
moz-do-not-send="true" href="mailto:vishnu@kalpakrit.com"
target="_blank">vishnu@kalpakrit.com</a></span></font><font size="2"><span
style="font-size: 10pt;"></span></font></p>
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