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I beg to differ on this. eQUEST has an evaporative cooling module.
The system that Mansi describes is essentially a direct evaporative
cooler that uses natural forces instead of a fan to provide the air
flow. What I would do using eQUEST would be to model the building
with a direct evaporative cooler at 100% outside air, and play
around with the air flow rates to get a sense of how much cooling
loads can be replaced. To go further, you can also develop a
functional equation relating the amount of air flow to the outdoor
wind speed and temperature difference between the evap cooler outlet
and the room air temperature. If you were working with DOE-2.1E, an
earlier version of the DOE-2.2 engine in eQUEST, you could put that
in as a FUNCTION, but unfortunately DOE-2.2 doesn't accept
FUNCTIONs.<br>
<br>
Joe<br>
<pre class="moz-signature" cols="90">Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
<a class="moz-txt-link-abbreviated" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.whiteboxtechnologies.com">www.whiteboxtechnologies.com</a>
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"
</pre>
<br>
On 3/7/2012 5:53 AM, Sami, Vikram wrote:
<blockquote
cite="mid:BF1FB99E0691894F9DCB992DF4DFDE9F37D282F0@chi01exmb.perkinswill.net"
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<div class="WordSection1">
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);">Mansi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);">I doubt you can do this credibly in eQUEST. You
really need a CFD type package to be able to simulate this.
. A word of caution – the effort to develop the simulation
for this is a master’s thesis in itself. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal" style=""><b><span style="font-size: 10pt;
font-family: "Arial","sans-serif";
color: rgb(220, 170, 44);"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style=""><b><span style="font-size: 9pt;
font-family: "Arial","sans-serif";
color: gray;">Vikram Sami</span></b><span
style="font-size: 9pt; font-family:
"Arial","sans-serif"; color: gray;">,
LEED AP BD+C<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 9pt;
font-family: "Arial","sans-serif";
color: gray;">Sustainable Design Analyst<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 9pt;
font-family: "Arial","sans-serif";
color: gray;">1315 Peachtree St. NE, Atlanta, GA 30309<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span style="font-size: 9pt;
font-family: "Arial","sans-serif";
color: gray;">t: 404-443-7462 f: </span><span
style="font-size: 9pt; font-family:
"Arial","sans-serif"; color: gray;"
lang="ES">404.892.5823 </span><span style="font-size: 9pt;
font-family: "Arial","sans-serif";
color: gray;"> e: <a class="moz-txt-link-abbreviated" href="mailto:vikram.sami@perkinswill.com">vikram.sami@perkinswill.com</a> </span><span
style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><a moz-do-not-send="true"
href="http://www.perkinswill.com/"><span style="font-size:
9pt; font-family:
"Arial","sans-serif"; color: gray;
text-decoration: none;">www.perkinswill.com</span></a></span><span
style="font-size: 9pt; font-family:
"Arial","sans-serif"; color: gray;"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom: 3pt;"><b><span
style="font-size: 9pt; font-family:
"Arial","sans-serif"; color: gray;">Perkins+Will.</span></b><span
style="font-size: 9pt; font-family:
"Arial","sans-serif"; color: gray;"> </span><span
style="font-size: 9pt; font-family:
"Arial","sans-serif"; color: rgb(173,
212, 37);">Ideas + buildings that honor the broader goals of
society</span><span style="font-size: 9pt; font-family:
"Arial","sans-serif"; color: green;"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size: 10pt;
font-family: "Tahoma","sans-serif";">From:</span></b><span
style="font-size: 10pt; font-family:
"Tahoma","sans-serif";">
<a class="moz-txt-link-abbreviated" href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
[<a class="moz-txt-link-freetext" href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>] <b>On
Behalf Of </b>Mansi Jayswal<br>
<b>Sent:</b> Tuesday, March 06, 2012 11:25 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Query regarding PDEC (
Passive cooling ) simulation in eQuest<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal" style="background: none repeat scroll 0% 0%
white;"><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">Hello friends,<o:p></o:p></span></p>
<p class="MsoNormal" style="background: none repeat scroll 0% 0%
white;"><span style="font-size: 10pt; font-family:
"Arial","sans-serif";"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background: none repeat scroll 0% 0%
white;"><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">My name is Mansi
Jayswal. I am a final year student of Masters Programme at
CEPT University, India. By profession I am an architect.
Currently I am doing thesis on passive cooling technique
(Passive down draught evaporative cooling system- PDEC ).
And try to identified that how much cooling load of HVAC
system can be replaced through this system.<o:p></o:p></span></p>
<p class="MsoNormal" style="background: none repeat scroll 0% 0%
white;"><span style="font-size: 10pt; font-family:
"Arial","sans-serif";"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background: none repeat scroll 0% 0%
white;"><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">Now my query is
that is it eQuest is capable to simulate such building with
wind tower or PHDC (PDEC ) system? If anybody knows please
kindly reply. I have very days left for final submission and
I am stuck here.<o:p></o:p></span></p>
<p class="MsoNormal" style="background: none repeat scroll 0% 0%
white;"><span style="font-size: 10pt; font-family:
"Arial","sans-serif";"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background: none repeat scroll 0% 0%
white;"><span style="font-size: 10pt; font-family:
"Arial","sans-serif";">Thanks <o:p></o:p></span></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">-- <span style="color: rgb(136, 136,
136);"><o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="color: rgb(136, 136, 136);"><br>
Regards,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color: rgb(136, 136, 136);">Mansi
Jayswal,<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color: rgb(136, 136, 136);">B.Arch
I IGBC AP I M.Tech in Climate Change & Sustainable
Development <o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="color: rgb(136, 136, 136);">Faculty
of Sustainable Environment & Climate Change,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color: rgb(136, 136, 136);">Centre
for Environmental Planning & Technology (CEPT)
University<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
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