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<TITLE>[bldg-sim] High Performance Glazing</TITLE>
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<DIV dir=ltr><FONT face=Arial color=#000000 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">The
ultimate solution could be the reversible windows (under research). The concept
of the Low-E reversible window is to flip the glass window in winter so the
low-E coat will be on the 2<SUP>nd</SUP> surfaces and in summer on the 3<SUP>rd
</SUP>surface ( counting surfaces from inside)</SPAN></FONT></DIV>
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<DIV dir=ltr><FONT face=Tahoma size=2><A
href="mailto:sim@gard.com">sim@gard.com</A> on behalf of Jeff
Haberl<BR><B>Sent:</B> Thu 12/15/2005 8:48 PM<BR><B>To:</B>
bldg-sim@gard.com<BR><B>Subject:</B> [bldg-sim] High Performance
Glazing<BR></FONT><BR></DIV></DIV>
<DIV>
<P><FONT size=2>These results are consistent with our simulations, since the
low-e reduces useful winter solar heat gain if installed on the 3rd surface, or
modeled with SC. To model this more accurately you would need a W5 file for
specific northern low-e window, and CWFs.<BR><BR>Jeff<BR>BB 8=! 8=)
:=) 8=) ;=) 8=) 8=( 8=) :=') 8=)
8=) 8=? BB<BR><BR>Jeff S. Haberl, Ph.D.,
P.E.............................jhaberl@esl.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.......................URL: www-esl.tamu.edu<BR><BR>BB 8=/
8=) :=) 8=) ;=) 8=) 8=() 8=) 8=?
8=) 8=) 8= BB<BR><BR><BR>-----Original Message-----<BR>From:
bldg-sim@gard.com <bldg-sim@gard.com><BR>To: bldg-sim@gard.com
<bldg-sim@gard.com><BR>Sent: Thu Dec 15 14:52:43 2005<BR>Subject:
[bldg-sim] High Performance Glazing<BR><BR>I am modeling high performance
glazing with U=0.14, SC=0.35 and comparing to typical 1" thick insulating low-e
glass with U=0.33, SC=0.76. Climate is midwest US and 86% of the glass is
facing north. The north wall is basically all glass and spandrel. Heating is
suppied from district steam supply.<BR><BR>Results show increased steam energy
consumption from February through September with high performance glazing and
less for remaining winter months. HVAC system is VAV with hot water reheat
coils.<BR><BR>Overall annual steam energy consumption reduction is very small. I
expected to see significant heating energy savings due to increased perimeter
R-value. Has anyone modeled high performance glazing and seen similar
results?<BR><BR><BR>Mark Zoeteman<BR>FTC&H, Inc.<BR>(616)
464-3739<BR>mrzoeteman@ftch.com<BR><BR><BR><BR><BR>==================<BR>You
received this e-mail because you are subscribed<BR>to the BLDG-SIM@GARD.COM
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