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Isabelle,<br>
TRNSYS models economizers in a few different ways. Unless I am
mistaken, there is an economizer model in the TESS HVAC library (an
add-on to the standard TRNSYS library of components). However,
economizers vary widely in their control. Fundamentally, they increase
the amount of outdoor air that is brought into the building when
ambient conditions are favorable. The operation of such a device can be
easily modeled using equations within the TRNSYS input file. So yes,
TRNSYS can model the ASHRAE reference building economizer but it isn't
necessarily a plug-and-play situation.<br>
Kind regards,<br>
David<br>
<br>
<br>
On 10/18/2010 05:03, Isabelle BRUYERE wrote:
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<div class="WordSection1">
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">Dear
David, dear Matt,<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">We
are </span></span><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: navy;" lang="EN">currently</span></span><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">
working on various projects for which a BREEAM certification is
intended.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">So,
we would like to obtain, from BRE, an agreement for the use of
TRNSYS to evaluate energy consumption and thermal comfort. To do so, we
have to
answer a list of questions (see </span></span><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: navy;" lang="EN">attached</span></span><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">
file) or demonstrate that Trnsys has already been agreed for
another study.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">Are
you aware of a project for which Trnsys was used in the
context of a BREEAM certification? If not, can you help us answer</span></span><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: navy;" lang="EN">ing</span></span><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">
the following questions:<o:p></o:p></span></span></p>
<p class="MsoListParagraph" style="text-indent: -18pt;"><!--[if !supportLists]--><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><span
style="">-<span
style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;">
</span></span></span></span><!--[endif]--><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">Does
the software model
economisers as requested by the ASHRAE reference building?<o:p></o:p></span></span></p>
<p class="MsoListParagraph" style="text-indent: -18pt;"><!--[if !supportLists]--><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><span
style="">-<span
style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;">
</span></span></span></span><!--[endif]--><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: navy;" lang="EN">Ha</span></span><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">s
Trnsys been tested according to the BESTEST set or,
alternatively, EN 15265 and according to ANSI/ASHRAE Standard 140-2004</span></span><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: navy;" lang="EN">?</span></span><span
class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">Thanks
already for your help!<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">Best
regards,<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN">Isabelle
Bruyère<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span class="longtext"><span
style="font-family: "Arial","sans-serif"; color: black;" lang="EN"><o:p> </o:p></span></span></p>
<p class="MsoNormal" style=""><b><span
style="font-size: 13.5pt; color: gray;" lang="FR">________________________<o:p></o:p></span></b></p>
<p class="MsoNormal" style=""><b><span
style="font-size: 13.5pt; color: gray;" lang="FR">MATRIciel </span></b><b><span
style="color: gray;" lang="FR">s.a</span></b><b><span lang="FR"><br>
<span style="color: gray;">Isabelle Bruyère _</span></span></b><span
style="color: gray;" lang="FR"> </span><b><span
style="font-size: 10pt; color: gray;" lang="FR"> Directeur</span></b><span
style="font-size: 12pt;" lang="FR"><o:p></o:p></span></p>
<p class="MsoNormal" style=""><b><span style="color: gray;" lang="FR"> <br>
</span></b><span style="font-size: 10pt; color: gray;" lang="FR">Place
de
l'Université, 25 étage 2 <br>
à 1348 Louvain-la-Neuve<br>
Tél : 010/24 15 70 - Fax : 010/24 15 60 <o:p></o:p></span></p>
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</span><span style="font-size: 10pt; color: blue;" lang="FR"><a
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<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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