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Hi Leen,<br><br>I did my PhD work on Building Integrated Photovoltaic/Thermal systems.<br><br>My work was mostly focused at the interior convective heat transfer coefficients in the cavity/gap between PV modules and the next layer of building envelope in the roof where the air flowed. <br><br>However I looked numerically the influence of different wind correlations:<br><br><br><br><br><div><div id="SkyDrivePlaceholder"></div>From: bldg-sim-request@lists.onebuilding.org<br>Subject: Bldg-sim Digest, Vol 51, Issue 10<br>To: bldg-sim@lists.onebuilding.org<br>Date: Sun, 12 Feb 2012 13:30:46 -0800<br><br><pre>Send Bldg-sim mailing list submissions to<br> bldg-sim@lists.onebuilding.org<br> <br>To subscribe or unsubscribe via the World Wide Web, visit<br> <a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>or, via email, send a message with subject or body 'help' to<br> bldg-sim-request@lists.onebuilding.org<br> <br>You can reach the person managing the list at<br> bldg-sim-owner@lists.onebuilding.org<br> <br>When replying, please edit your Subject line so it is more specific<br>than "Re: Contents of Bldg-sim digest..."<br></pre><br><br>--Forwarded Message Attachment--<br>From: jhaberl@tamu.edu<br>To: l.f.r.peeters@gmail.com; bldg-sim@lists.onebuilding.org<br>Date: Sat, 11 Feb 2012 21:55:59 +0000<br>Subject: Re: [Bldg-sim] exterior convection coefficient for tilted roof<br><br>
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Leen,<BR>
<BR>
This depends on whether or not the wind is blowing... or not. ASHRAE used to have tabluated values (still in some textbooks) of R = .17 Btu/ft2-hr-F for winter (15 mph wind) and .25 Btu/ft2-hr-F for summer (7 mph wind). Otherwise, for a vertical surface
it would be .68 for free convection, probably less for a tilted surface, .9 if horizontal heat flow down.
<BR>
<BR>
Also, radiation can be significant if the surface is facing a cloudless sky. I think Kreider's solar textbook has a equation for sky temperature...which is somewhat complicated by cloud cover, etc.<BR>
<BR>
Jeff<BR>
<div>
<BR>
<div><font size="2" color="#0000ff" face="Tahoma">8=! 8=) :=) 8=) ;=) 8=) 8=( 8=) 8=() 8=) 8=| 8=) :=') 8=)8=?<br>
<br>
Jeff S. Haberl, Ph.D.,P.E., FASHRAE..............jhaberl@tamu.edu<br>
<br>
Professor............................................................Office Ph: 979-845-6507<br>
<br>
Department of Architecture.............................Lab Ph:979-845-6065<br>
<br>
Energy Systems Laboratory.............................FAX: 979-862-2457<br>
<br>
Texas A&M University.....................................77843-3581<br>
<br>
College Station, Texas, USA, 77843..................URL:www.esl.tamu.edu<br>
<br>
8=/ 8=) :=) 8=) ;=) 8=) 8=() 8=) :=) 8=) 8=! 8=) 8=? 8=)8=0<br>
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<div style="direction:ltr" id="ecxdivRpF52504"><font size="2" color="#000000" face="Tahoma"><b>From:</b> bldg-sim-bounces@lists.onebuilding.org [bldg-sim-bounces@lists.onebuilding.org] on behalf of leen peeters [l.f.r.peeters@gmail.com]<br>
<b>Sent:</b> Saturday, February 11, 2012 1:59 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] exterior convection coefficient for tilted roof<br>
</font><br>
</div>
<div></div>
<div>
<div>Dear,</div>
<div> </div>
<div>can anyone point me to some reference values for exterior convection coefficients for tilted surfaces like a roof?</div>
<div> </div>
<div>Thanks</div>
<div> </div>
<div>Leen</div>
</div>
</div>
</div>
<br><br>--Forwarded Message Attachment--<br>From: phcjam@yahoo.com<br>To: bldg-sim@lists.onebuilding.org<br>Date: Sat, 11 Feb 2012 14:40:27 -0800<br>Subject: [Bldg-sim] Fw: exterior convection coefficient for tilted roof<br><br><div style="color:#000;background-color:#fff;font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>I've only seen </span>reference values of interior convection coefficients for tilted surfaces, not exterior coefficients: which are available for summer & winter conditions, due to the difference in wind velocity.<br></div><div> </div><div>Paul Hay MBA, BA(Arch)<br>Managing Partner<br>PAUL HAY Capital Projects<br><br><span style="font-style:italic">Caribbean Capital Project Management & Planning</span><br><br><img src="data:image/png;base64,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%0D%0AgpLxUY/7hn+CcKHrPIhJZkERQJSxotINPRBFdfGTxIeVc4itFkfhKOOIsI6AdEyKJr7RtK+7AirVaOZc+d4JPaCSwDhwisukaQrI+kygGSiAVYstcAdSyb2cIVsJEwETYFi2WbpO/5F1f2fxxK1IXTAPWY3r23SDCaMetZ/3znq1vdEZMfKWzY4oJbz7KGlT3TQhUDBkSEXz0oCN4D/NlrrDfgOLT6nQZGOrPxFdirjgJHD6ccFFFEUz9Vu+yNivsNNyWp3mp5qY9kw6dbVa3HU2TdUwW1MCOBm2ZKwJ8mSt6F4RC0RLQ3Oj+DQkZ+NqciOIEMebqHAFHlE5/SGcMRRZLHOCwnGeuImLr2NrtW2pkMRN3PblEEWTr1tVJqwIi0uvEKZFd3i1zLVqalqIF3+3LXNsxty3MixZUDqy0Yx2nTLhdT/XKy2cBzP8A098NlYzuV+MAAAAASUVORK5CYII=" alt=""><br><br>P.O.Box 3367<br>Constant Springs, Kgn. 8<br>Jamaica, W.I.<br><br></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt" lang="EN-US">tel: 1 (876) 756-0631</span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt" lang="EN-US">cel: 1 (876) 324-4274</span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt" lang="EN-US">fax: 1 (876)
756-0631</span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt" lang="EN-US"> </span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt" lang="EN-US">e-mail: paul.hay@phcjam.com</span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9pt" lang="EN-US">skype name: phcjam</span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9pt" lang="EN-US">twitter: http://www.twitter.com/phcjam</span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt" lang="EN-US">web: http://www.phcjam.com</span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt" lang="EN-US">profile: http://www.linkedin.com/company/paul-hay-capital-projects</span></font></div><div class="ecxyiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt" lang="EN-US"><br></span></font></div><div class="ecxyiv150174847MsoNormal"> <br></div><br><br> <div style="font-family:times new roman, new york, times, serif;font-size:12pt"> <div style="font-family:times new roman, new york, times, serif;font-size:12pt"> <div dir="ltr"> <font size="2" face="Arial"> ----- Forwarded Message -----<br> <b><span style="font-weight:bold">From:</span></b> leen peeters <l.f.r.peeters@gmail.com><br> <b><span style="font-weight:bold">To:</span></b> bldg-sim@lists.onebuilding.org <br> <b><span style="font-weight:bold">Sent:</span></b> Saturday, February 11, 2012 2:59 PM<br> <b><span style="font-weight:bold">Subject:</span></b> [Bldg-sim] exterior convection coefficient for tilted roof<br> </font> </div> <br>
<div id="ecxyiv558109158"><div>Dear,</div>
<div> </div>
<div>can anyone point me to some reference values for exterior convection coefficients for tilted surfaces like a roof?</div>
<div> </div>
<div>Thanks</div>
<div> </div>
<div>Leen</div>
</div><br>_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a href="mailto:BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG">BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG</a><br><br><br> </div> </div> </div><br><br>--Forwarded Message Attachment--<br>From: chris.malcolm.yates@gmail.com<br>CC: bldg-sim@lists.onebuilding.org<br>To: phcjam@yahoo.com<br>Date: Sat, 11 Feb 2012 22:45:16 +0000<br>Subject: Re: [Bldg-sim] Fw: exterior convection coefficient for tilted roof<br><br>It's true wind does dominate external convection.<BR>
Cibse guide A will give you all the numbers that you're looking for <BR>
Chris<BR>
<div class="ecxgmail_quote">On 11 Feb 2012 22:40, "Paul Hay" <<a href="mailto:phcjam@yahoo.com">phcjam@yahoo.com</a>> wrote:<br><blockquote class="ecxgmail_quote" style="border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:12pt;font-family:times new roman,new york,times,serif"><div><span>I've only seen </span>reference values of interior convection coefficients for tilted surfaces, not exterior coefficients: which are available for summer & winter conditions, due to the difference in wind velocity.<br>
</div><div> </div><div>Paul Hay MBA, BA(Arch)<br>Managing Partner<br>PAUL HAY Capital Projects<br><br><span style="font-style:italic">Caribbean Capital Project Management & Planning</span><br><br><img alt=""><br><br>P.O.Box 3367<br>
Constant Springs, Kgn. 8<br>Jamaica, W.I.<br><br></div><div><span style="font-size:9.0pt" lang="EN-US">tel: <a target="_blank">1 (876) 756-0631</a></span></div>
<div><span style="font-size:9.0pt" lang="EN-US">cel: <a target="_blank">1 (876) 324-4274</a></span></div><div><span style="font-size:9.0pt" lang="EN-US">fax: 1 (876)
756-0631</span></div><div><span style="font-size:9.0pt" lang="EN-US"> </span></div><div><span style="font-size:9.0pt" lang="EN-US">e-mail: <a href="mailto:paul.hay@phcjam.com">paul.hay@phcjam.com</a></span></div>
<div><span style="font-size:9pt" lang="EN-US">skype name: phcjam</span></div><div><span style="font-size:9pt" lang="EN-US">twitter: <a href="http://www.twitter.com/phcjam" target="_blank">http://www.twitter.com/phcjam</a></span></div>
<div><span style="font-size:9.0pt" lang="EN-US">web: <a href="http://www.phcjam.com" target="_blank">http://www.phcjam.com</a></span></div><div><span style="font-size:9.0pt" lang="EN-US">profile: <a href="http://www.linkedin.com/company/paul-hay-capital-projects" target="_blank">http://www.linkedin.com/company/paul-hay-capital-projects</a></span></div>
<div><span style="font-size:9.0pt" lang="EN-US"><br></span></div><div> <br></div><br><br> <div style="font-family:times new roman,new york,times,serif;font-size:12pt"> <div style="font-family:times new roman,new york,times,serif;font-size:12pt">
<div dir="ltr"> <font face="Arial"> ----- Forwarded Message -----<br> <b><span style="font-weight:bold">From:</span></b> leen peeters <<a href="mailto:l.f.r.peeters@gmail.com">l.f.r.peeters@gmail.com</a>><br>
<b><span style="font-weight:bold">To:</span></b> <a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a> <br> <b><span style="font-weight:bold">Sent:</span></b> Saturday, February 11, 2012 2:59 PM<br>
<b><span style="font-weight:bold">Subject:</span></b> [Bldg-sim] exterior convection coefficient for tilted roof<br> </font> </div> <br>
<div><div>Dear,</div>
<div> </div>
<div>can anyone point me to some reference values for exterior convection coefficients for tilted surfaces like a roof?</div>
<div> </div>
<div>Thanks</div>
<div> </div>
<div>Leen</div>
</div><br>_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>
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<br></blockquote></div>
<br><br>--Forwarded Message Attachment--<br>From: l.f.r.peeters@gmail.com<br>CC: bldg-sim@lists.onebuilding.org<br>To: chris.malcolm.yates@gmail.com<br>Date: Sat, 11 Feb 2012 23:51:33 +0100<br>Subject: Re: [Bldg-sim] Fw: exterior convection coefficient for tilted roof<br><br><div>Hi Chris,</div>
<div> </div>
<div>CIBSE suggest to replace g with gcos(theta) in the Grasshof number. That means, it accounts for the roof being tilted in natural convection. When it comes to roofs, there is another aspects that starts to be important ... the roof finishing in tiles will have a 'detoriated' velocity underneath the tiles. It is mainly that one directing the convective losses ...</div>
<div> </div>
<div>Am I correct on this?</div>
<div> </div>
<div>Leen<br><br><br></div>
<div class="ecxgmail_quote">On Sat, Feb 11, 2012 at 11:45 PM, Chris Yates <span dir="ltr"><<a href="mailto:chris.malcolm.yates@gmail.com">chris.malcolm.yates@gmail.com</a>></span> wrote:<br>
<blockquote style="border-left:#ccc 1px solid;padding-left:1ex" class="ecxgmail_quote">
It's true wind does dominate external convection.<BR>
Cibse guide A will give you all the numbers that you're looking for <BR><span class="ecxHOEnZb"><font color="#888888">
Chris<BR></font></span>
<div class="ecxHOEnZb">
<div class="h5">
<div class="ecxgmail_quote">On 11 Feb 2012 22:40, "Paul Hay" <<a href="mailto:phcjam@yahoo.com">phcjam@yahoo.com</a>> wrote:<br>
<blockquote style="border-left:#ccc 1px solid;padding-left:1ex" class="ecxgmail_quote">
<div>
<div style="font-family:times new roman,new york,times,serif;font-size:12pt">
<div><span>I've only seen </span>reference values of interior convection coefficients for tilted surfaces, not exterior coefficients: which are available for summer & winter conditions, due to the difference in wind velocity.<br>
</div>
<div> </div>
<div>Paul Hay MBA, BA(Arch)<br>Managing Partner<br>PAUL HAY Capital Projects<br><br><span style="font-style:italic">Caribbean Capital Project Management & Planning</span><br><br><img alt=""><br><br>P.O.Box 3367<br>Constant Springs, Kgn. 8<br>
Jamaica, W.I.<br><br></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US">tel: <a target="_blank">1 (876) 756-0631</a></span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US">cel: <a target="_blank">1 (876) 324-4274</a></span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US">fax: 1 (876) 756-0631</span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US"> </span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US">e-mail: <a href="mailto:paul.hay@phcjam.com">paul.hay@phcjam.com</a></span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US">skype name: phcjam</span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US">twitter: <a href="http://www.twitter.com/phcjam" target="_blank">http://www.twitter.com/phcjam</a></span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US">web: <a href="http://www.phcjam.com/" target="_blank">http://www.phcjam.com</a></span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US">profile: <a href="http://www.linkedin.com/company/paul-hay-capital-projects" target="_blank">http://www.linkedin.com/company/paul-hay-capital-projects</a></span></font></div>
<div><font size="-0"><span style="font-size:9pt" lang="EN-US"><br></span></font></div>
<div> <br></div><br><br>
<div style="font-family:times new roman,new york,times,serif;font-size:12pt">
<div style="font-family:times new roman,new york,times,serif;font-size:12pt">
<div dir="ltr"><font face="Arial">----- Forwarded Message -----<br><b><span style="font-weight:bold">From:</span></b> leen peeters <<a href="mailto:l.f.r.peeters@gmail.com">l.f.r.peeters@gmail.com</a>><br>
<b><span style="font-weight:bold">To:</span></b> <a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a> <br><b><span style="font-weight:bold">Sent:</span></b> Saturday, February 11, 2012 2:59 PM<br>
<b><span style="font-weight:bold">Subject:</span></b> [Bldg-sim] exterior convection coefficient for tilted roof<br></font></div><br>
<div>
<div>Dear,</div>
<div> </div>
<div>can anyone point me to some reference values for exterior convection coefficients for tilted surfaces like a roof?</div>
<div> </div>
<div>Thanks</div>
<div> </div>
<div>Leen</div></div><br>_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>
To unsubscribe from this mailing list send a blank message to <a href="mailto:BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG">BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG</a><br><br><br></div></div></div></div><br>_______________________________________________<br>
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<br></blockquote></div></div></div><br>_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>
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<br><br>--Forwarded Message Attachment--<br>From: chris.malcolm.yates@gmail.com<br>To: l.f.r.peeters@gmail.com; bldg-sim@lists.onebuilding.org<br>Date: Sun, 12 Feb 2012 12:54:41 +0000<br>Subject: Re: [Bldg-sim] Fw: exterior convection coefficient for tilted roof<br><br>
<meta http-equiv="Content-Type" content="text/html; charset=unicode">
<meta name="Generator" content="Microsoft SafeHTML">
Hi Leen,<br>
<br>
I'm not familiar with the calculation involving the Grasshof number.
The formula given is hc= 4+4v, where hc is the convection
coefficient and v is the wind velocity. The formula is probably
derived empirically (don't know for certain). Are you definitely
talking about the convection element of heat transfer or are you
talking lw radiation?<br>
<br>
Regards<br>
<br>
Chris<br>
<br>
On 11/02/2012 22:51, leen peeters wrote:
<blockquote cite="mid:CAB_-mWNjH9oZRa7-BD+bs0XwLpG0FFd7Z=La_XJGV2iKNE3Vzg@mail.gmail.com">
<div>Hi Chris,</div>
<div> </div>
<div>CIBSE suggest to replace g with gcos(theta) in the Grasshof
number. That means, it accounts for the roof being tilted in
natural convection. When it comes to roofs, there is another
aspects that starts to be important ... the roof finishing in
tiles will have a 'detoriated' velocity underneath the tiles. It
is mainly that one directing the convective losses ...</div>
<div> </div>
<div>Am I correct on this?</div>
<div> </div>
<div>Leen<br>
<br>
<br>
</div>
<div class="ecxgmail_quote">On Sat, Feb 11, 2012 at 11:45 PM, Chris
Yates <span dir="ltr"><<a href="mailto:chris.malcolm.yates@gmail.com">chris.malcolm.yates@gmail.com</a>></span>
wrote:<br>
<blockquote style="padding-left:1ex" class="ecxgmail_quote">
It's true wind does dominate external convection.<BR>
Cibse guide A will give you all the numbers that you're
looking for <BR>
<span class="ecxHOEnZb"><font color="#888888">
Chris<BR>
</font></span>
<div class="ecxHOEnZb">
<div class="h5">
<div class="ecxgmail_quote">On 11 Feb 2012 22:40, "Paul Hay"
<<a href="mailto:phcjam@yahoo.com">phcjam@yahoo.com</a>>
wrote:<br>
<blockquote style="padding-left:1ex" class="ecxgmail_quote">
<div>
<div style="font-family:times new roman,new\00000d\00000a york,times,serif;font-size:12pt">
<div><span>I've only seen </span>reference values
of interior convection coefficients for tilted
surfaces, not exterior coefficients: which are
available for summer & winter conditions,
due to the difference in wind velocity.<br>
</div>
<div> </div>
<div>Paul Hay MBA, BA(Arch)<br>
Managing Partner<br>
PAUL HAY Capital Projects<br>
<br>
<span style="font-style:italic">Caribbean
Capital Project Management & Planning</span><br>
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<div> <br>
</div>
<br>
<br>
<div style="font-family:times new roman,new\00000d\00000a york,times,serif;font-size:12pt">
<div style="font-family:times new roman,new\00000d\00000a york,times,serif;font-size:12pt">
<div dir="ltr"><font face="Arial">-----
Forwarded Message -----<br>
<b><span style="font-weight:bold">From:</span></b>
leen peeters <<a href="mailto:l.f.r.peeters@gmail.com">l.f.r.peeters@gmail.com</a>><br>
<b><span style="font-weight:bold">To:</span></b>
<a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a>
<br>
<b><span style="font-weight:bold">Sent:</span></b>
Saturday, February 11, 2012 2:59 PM<br>
<b><span style="font-weight:bold">Subject:</span></b>
[Bldg-sim] exterior convection coefficient
for tilted roof<br>
</font></div>
<br>
<div>
<div>Dear,</div>
<div> </div>
<div>can anyone point me to some reference
values for exterior convection
coefficients for tilted surfaces like a
roof?</div>
<div> </div>
<div>Thanks</div>
<div> </div>
<div>Leen</div>
</div>
<br>
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<br>
<div class="ecxmoz-signature">-- <br>
<div>
Chris Yates <span style="color:rgb(79, 98, 40)">C Eng
MCIBSE</span><BR>
<i style="">Building Physics Consultant</i><BR>
Tel:<span style=""> </span>+447960731576<BR>
Email: <a class="ecxmoz-txt-link-abbreviated" href="mailto:chris.malcolm.yates@gmail.com">chris.malcolm.yates@gmail.com</a><BR>
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