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 href="mailto:vishnu@kalpakrit.com">vishnu@kalpakrit.com</a>></span> wrote:<br>
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<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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<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 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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