<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>Maria:</DIV>
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<DIV>Excellent information.</DIV>
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<DIV>Would you please describe what you mean by "free running mode"?</DIV>
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<DIV>Thank you.<BR></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Maria Kordjamshidi <m_kordjamshidi@yahoo.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> BldgSim Mailing List <bldg-sim@onebuilding.org>; equest-users@lists.onebuilding.org; trace-users@lists.onebuilding.org; Fareed Syed <syedf@progressiveae.com><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Fri, February 5, 2010 9:47:04 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Bldg-sim] Impact of Overhangs<BR></FONT><BR>
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<DIV><FONT color=#00007f>Fareed</FONT></DIV>
<DIV><FONT color=#00007f> </FONT></DIV>
<DIV><FONT color=#00007f>I have examined the effect of many parameters on the thermal performance of 6 typical houses (single storey and double storey houses) for a moderate climate of Sydney. a part of my report comes in the following for your consideration.</FONT></DIV>
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<DIV><SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 'Times New Roman', 'serif'; FONT-SIZE: 12pt" lang=EN-AU><FONT color=#00007f>"Adding an overhang above all windows improved annual thermal performance of the typical houses in conditioned mode. However, this was not the case for the houses in free running mode. The houses presented different patterns of annual thermal performance in the different modes, responding to increments in overhang width.</FONT></SPAN></DIV><SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 'Times New Roman', 'serif'; FONT-SIZE: 12pt" lang=EN-AU>
<P style="TEXT-ALIGN: justify; MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN style="LINE-HEIGHT: 150%; FONT-STYLE: normal; FONT-FAMILY: 'Times New Roman', 'serif'; FONT-SIZE: 12pt; FONT-WEIGHT: normal" lang=EN-AU><FONT color=#00007f>Increases in overhang width of 1m resulted in an average of 4.8% enhancement in the house’s annual thermal performance in conditioned mode. The same overhang generally caused 3.7% deterioration in annual free running performance, while a slight improvement was observed in thermal performance in some cases.<SPAN> </SPAN>The reason for these different results is made clear when comparing the seasonal performances of each house in two different house modes.</FONT></SPAN>
<P style="TEXT-ALIGN: justify; MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN style="LINE-HEIGHT: 150%; FONT-STYLE: normal; FONT-FAMILY: 'Times New Roman', 'serif'; FONT-SIZE: 12pt; FONT-WEIGHT: normal" lang=EN-AU><SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 'Times New Roman', 'serif'; FONT-SIZE: 12pt" lang=EN-AU><FONT color=#00007f>When all the overhang widths were increased to 1m, the summer performance improved by an average of 26.6% in conditioned mode. The improvement decreased to an average of 8% for all houses in free running mode. The winter performance of the typical houses in this situation deteriorated by an average of 8.2% in conditioned mode and 11.7% in the free running mode. Thus the deterioration that was observed in the annual free running performance of some of the houses in response to the setting of overhang with a width of 1m for all windows would appear to owe more to deterioration in their winter performance and less improvement in
their summer performance in free running mode than in conditioned mode."</FONT></SPAN></SPAN>
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<DIV><FONT color=#00007f>Hope this help</FONT></DIV>
<DIV><FONT color=#00007f> </FONT></DIV>
<DIV><FONT color=#00007f>Maria</FONT></DIV>
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<DIV><BR><BR>--- On <B>Sat, 2/6/10, Fareed Syed <I><syedf@progressiveae.com></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From: Fareed Syed <syedf@progressiveae.com><BR>Subject: [Bldg-sim] Impact of Overhangs<BR>To: "BldgSim Mailing List" <bldg-sim@onebuilding.org>, equest-users@lists.onebuilding.org, trace-users@lists.onebuilding.org<BR>Date: Saturday, February 6, 2010, 12:22 AM<BR><BR>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt">Folks,</SPAN></P></DIV>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt">Does anyone have good research data using simulations on the impact of overhangs and shadings for a typical building?</SPAN>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt">I am having hard time convincing architects to reduce the glazing. They will make it a glass building if they are given a chance.</SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"> </SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt">I want to show them that for a 2 or 3 storied building with ton of glazing and few feet of overhang will not help the cooling/heating loads at all.</SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"> </SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt">I would appreciate your input.</SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"> </SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt">Thanks much.</SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"> </SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"> </SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt">Fareed Syed EIT, LEED</SPAN><SUP><SPAN style="FONT-FAMILY: 'Comic Sans MS'; FONT-SIZE: 10pt">®</SPAN></SUP><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"> AP</SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 9pt">Mechanical Engineer</SPAN><B><SPAN style="FONT-FAMILY: 'Century Gothic', 'sans-serif'; FONT-SIZE: 12pt"> </SPAN></B><SPAN style="FONT-FAMILY: 'Comic Sans MS'; FONT-SIZE: 10pt"><BR></SPAN><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"><IMG id=Picture_x0020_1 alt=cid:image001.png@01C9B834.C9D7E7F0 src="cid:1.3067080316@web52805.mail.re2.yahoo.com" width=200 height=40></SPAN><SPAN style="FONT-FAMILY: 'Comic Sans MS'; FONT-SIZE: 10pt"></SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 9pt">1811 4 Mile Rd NE<BR>Grand Rapids, MI 49525</SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 9pt"> </SPAN>
<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 9pt">Phone: 616.361.2664 ext. 3247<BR>Direct: 616.447.3447<BR>Fax: 616.361.1493</SPAN><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"></SPAN>
<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 9pt"><A href="http://us.mc514.mail.yahoo.com/mc/compose?to=syedf@progressiveae.com" rel=nofollow target=_blank><SPAN style="COLOR: blue">syedf@progressiveae.com</SPAN></A><BR><A href="http://www.progressiveae.com/" rel=nofollow target=_blank><SPAN style="COLOR: blue">www.progressiveae.com</SPAN></A><BR><BR><BR> </SPAN><SPAN style="FONT-FAMILY: 'Segoe UI', 'sans-serif'; FONT-SIZE: 10pt"></SPAN>
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