<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML xmlns:v = "urn:schemas-microsoft-com:vml" xmlns:b = "urn:schemas-boratech-com:BWordAx" xmlns:o = "urn:schemas-microsoft-com:office:office" xmlns:w = "urn:schemas-microsoft-com:office:word"><HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ks_c_5601-1987"> <META content="MSHTML 6.00.2800.1601" name=GENERATOR> <STYLE>v\:* { BEHAVIOR: url(#default#VML) } o\:* { BEHAVIOR: url(#default#VML) } w\:* { BEHAVIOR: url(#default#VML) } </STYLE> </HEAD> <BODY leftMargin=8 topMargin=8> <DIV>These are notes I made for myself a few years ago when faced with making windows that were more easily modeled outside esp-r.  I expect not much in this area of esp-r has changed.</DIV> <DIV> </DIV> <DIV>Jake</DIV> <DIV> </DIV> <DIV> <H1 style="MARGIN: 12pt 0in 3pt">Advanced Windows modeling </H1> See the FAQ pdf file.  First generate the window using Windows 5.2, documentation talks about Windows 4.1 or WIS.  Well after I wrote this section I noticed that NRCan has put a Canadian Windows modeling program on its website that may be worth checking.  UW is working on a better window model implementation in esp-r. Windows have both an insulating function and a transparent function.  ESP-r treats these separately for solar gains and heat loss.  <OL style="MARGIN-TOP: 0in" type=1> <LI class=MsoNormal style="MARGIN: 0in 0in 0pt; mso-list: l5 level1 lfo5; tab-stops: list .5in">The optics database is used for the solar gains.  Use the program Window 5.2 from the US government (LBL) for the transparent properties of the windows.  This program gives the angle dependent transmission values.  I think ESP-r can import directly (it says it can from an earlier unsupported version of Window) but I have not tried this.  Someone suggested using WIS, but I have not been able to make this program work.  (Haven＊t tried to hard, nor had the incentive to try.) Jon Hand has an import from Window 5 on his to do list.</LI> <LI class=MsoNormal style="MARGIN: 0in 0in 0pt; mso-list: l5 level1 lfo5; tab-stops: list .5in">The multilayer construction is used for the heat loss.  If the window is argon, it needs a higher R-value for the air layer than the default 0.17.  I used 0.25 for 卦§ of argon.  This was scaled from argon conductivity as compared to air with the values taken from Window 5.2.  Presumably similar scaling can be done for krypton or mixtures. Even then the U-value is incorrect.  The Solar absorptance and IR emissivity do not seem to affect the U-value.  I played with the air (ID 0) resistance to try and match U-Values.  This is also what Jon Hand recommends. Another time I just played with gap thickness to get the R-value that I wanted. The Uvalue should be accurate, at least according to Jon Hand.</LI> <LI class=MsoNormal style="MARGIN: 0in 0in 0pt; mso-list: l5 level1 lfo5; tab-stops: list .5in">More information in the FAQ pdf file.</LI> <LI class=MsoNormal style="MARGIN: 0in 0in 0pt; mso-list: l5 level1 lfo5; tab-stops: list .5in">Types of glass can be obtained from your glass manufacturer.</LI></OL> <H2 style="MARGIN: 12pt 0in 3pt">Editing Windows</H2> When editing windows in the m browse/edit/simulate c composition b constructions ’. menu, to change from one construction to another with differing optical as well as insulating properties, then the display of the optical properties does not change until you go into the b database maintenance d constructions a browse or edit this file > save database What I don＊t know is if this is required for only the correct display or also the correct values for the calculations.  So better safe than sorry. Jon＊s response below The recommended place to change a surface attribute from<o:p></o:p> one construction to another is in the<o:p></o:p> zone geometry->surface attributes facility rather than in the <o:p></o:p> zone construction menu.<o:p></o:p>  <o:p></o:p> If you make the change in surface attribues it detects that<o:p></o:p> both the zone geometry, construction and tmc files need to<o:p></o:p> be updated.<o:p></o:p>  <o:p></o:p> Every once in a while a change from an opaque construction<o:p></o:p> to a transparent construction will generate confusing messages<o:p></o:p> that indicate that the tmc file might not have been written out<o:p></o:p> correctly. In such cases it usually works to use the up-date<o:p></o:p> all constructions option at the bottom of the zone constructions<o:p></o:p> file list.</DIV> <BLOCKQUOTE> <DIV class=OutlookMessageHeader dir=ltr align=left>-----Original Message----- From: esp-r-bounces@lists.strath.ac.uk [mailto:esp-r-bounces@lists.strath.ac.uk]On Behalf Of Lewis Yook Sent: Tuesday, 27 November, 2007 19:50 To: ESP-r User Forum Subject: [esp-r] How to make this glass? (TMC) </DIV> Dear Everyone.   I am trying to make a new multilayer construction in esp-r.   The attached picture shows the multilayer of the glass which I want to apply in my project.   The thing is that 'the sun block film' (red thin layer in the picture) absorbs 75% of solar heat (in average).   This heat, then, is emitted from the film surface to the adjacen zone.   It warms up the temperature of that zone.   Do you think I can simulate this case using a new TMC ?   Your teaching will be really appreciated.   Thank you for reading.   Sincerely,   Lewis Yook Team Manager, Integrated Simulation Team. Design and Simulation for Sustainability (DASS) consultants Ltd.   139-743 31-dong(Business Incubator Center) 103-ho, Seoul National University of Technology 174 Gongreung 2-dong Nowon-gu, Seoul, Korea T. 82.2.913.2585 F. 82.2.949.2585 H. <A href="http://www.dasskorea.com" target=_blank>www.dasskorea.com</A><IMG height=1 alt="Web Bug from http://mail.dasskorea.com/mail/mail_confirm.php?host=dasskorea.com&id=froshin&sid=11962110297732175083&rcptto=esp-r%40lists.strath.ac.uk" src="http://www.sng.ecs.soton.ac.uk/mailscanner/images/1x1spacer.gif" width=1 NOSEND="1"> </BLOCKQUOTE></BODY></HTML>