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John,<br>
It depends a bit on what you are trying to do. If you are trying to
cool a building using a metal roof, I think that the standard TRNSYS
building model (Type56) would give you that effect. If you have got an
actively ventilated airspace behind the metal roof then I think we
might have an unglazed air-based solar collector that might work. If
you have fluid pipes on the back side of the metal roof then it might
be that the model Jeff was mentioning would be most appropriate.<br>
Kind regards,<br>
David<br>
<br>
<br>
<br>
John Hollick wrote:
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<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">We are looking at how to
determine the night cooling
potential of a metal roof and wondered if your collector module could
do that
or if you have any results showing the amount of cooling that you
obtained from
your tests.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">John Hollick<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Conserval Engineering Inc<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">E: <a
moz-do-not-send="true" href="mailto:jhollick@solarwall.com">jhollick@solarwall.com</a><o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><b><font face="Times New Roman" size="3"><span
style="font-size: 12pt; font-weight: bold;">Jeff Thornton</span></font></b>
<a moz-do-not-send="true"
href="mailto:trnsys-users%40engr.wisc.edu?Subject=%5BTRNSYS-users%5D%20Nocturnal%20Cooling&In-Reply-To="
title="[TRNSYS-users] Nocturnal Cooling">thornton at tess-inc.com </a><br>
<i><span style="font-style: italic;">Tue Jan 8 10:02:31 CST 2008</span></i>
<o:p></o:p></p>
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<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><!--beginarticle--><The component library has collector modules which cannot be linked to the<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">effective sky temperature. As a result I am not able to estimate the<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">radiative losses correctly. Is there any radiator/collector component that<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">I can link to effective sky temperature? ><o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><o:p> </o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">Our (TESS Libraries) unglazed flat plate collectors do exactly as you<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">suggest. We have used them in projects where the user collects heat<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">during the day into a large storage tank then charges a large cooling tank<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">at night by rejecting heat to the ambient/sky.<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><o:p> </o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">Let me know if you'd like details on the model.<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><o:p> </o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">Jeff<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><o:p> </o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><o:p> </o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">Jeff Thornton<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">President - TESS, LLC<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><o:p> </o:p></span></font></pre>
<pre><st1:Street w:st="on"><st1:address w:st="on"><font
face="Courier New" size="2"><span style="font-size: 10pt;">2916 Marketplace Drive</span></font></st1:address></st1:Street> - <st1:address
w:st="on"><st1:Street w:st="on">Suite</st1:Street> 104</st1:address><o:p></o:p></pre>
<pre><st1:City w:st="on"><font face="Courier New" size="2"><span
style="font-size: 10pt;">Madison</span></font></st1:City> WI 53719 <st1:place
w:st="on"><st1:country-region w:st="on">USA</st1:country-region></st1:place><o:p></o:p></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><o:p> </o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">Phone: 608-274-2577<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">Fax: 608-278-1475<o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">E-mail: <a
moz-do-not-send="true"
href="https://www.cae.wisc.edu/mailman/listinfo/trnsys-users">thornton at tess-inc.com</a><o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;">Web: <a class="moz-txt-link-abbreviated" href="http://www.tess-inc.com">www.tess-inc.com</a><o:p></o:p></span></font></pre>
<pre><font face="Courier New" size="2"><span style="font-size: 10pt;"><o:p> </o:p></span></font></pre>
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style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
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style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
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