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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='color:black'>Thanks a lot for your detailed answer Marion.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:black'>I actually got confused by the name of TrnBuild variable “External Shading factor” which I thought referred to radiation transmission factor and not to fraction of occultation (shdout in the formula I suppose).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:black'>I understand from your explanations why the additional thermal resistance is also lower than expected (only affects glazing which is kind of surprising though).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:black'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:black'>(PS : I also thank you for your interest in my idea of generating 3D data with third party software. I send you an example of DesignBuilder idf as soon as I have a moment).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:black'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:black'>Thanks for all<o:p></o:p></span></p><div><p class=MsoNormal><span style='color:#404040'>--<o:p></o:p></span></p><p class=MsoNormal><span style='color:#404040'>Antoine Gautier<br>Solam</span><span style='color:#70B221'>en</span><span style='color:black'><br></span><span style='color:#404040'>+33 6 98 78 56 46<o:p></o:p></span></p><p class=MsoNormal><span style='color:#404040'>antoine.gautier@solamen.fr</span><span style='color:black'><o:p></o:p></span></p></div><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-family:"Tahoma","sans-serif"'>De :</span></b><span style='font-family:"Tahoma","sans-serif"'> Marion Hiller [mailto:hiller@transsolar.com] <br><b>Envoyé :</b> jeudi 3 novembre 2011 10:17<br><b>À :</b> antoine.gautier<br><b>Cc :</b> trnsys-users<br><b>Objet :</b> AW: [TRNSYS-users] thermal resistance of external shading device<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=DE style='color:navy'>Dear Antoine,</span><span lang=DE> <span style='color:navy'><o:p></o:p></span></span></p><p class=MsoNormal><span lang=DE style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>looking at the calculation, it the resistance is always active when the shading is active.</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>Maybe you confused due to the influence of the frame?</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>The u-value of the frame is not influenced by the additional resistance of the shading.</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>The NTYPE 50 UWIN is calculated of three different parts:</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.0pt'><span lang=EN-GB style='color:navy'>a) Centre of glass</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-GB style='color:navy'><span style='mso-list:Ignore'>b)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-GB style='color:navy'>Edge of glass (influenced by the spacer)</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-GB style='color:navy'><span style='mso-list:Ignore'>c)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-GB style='color:navy'>Frame</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>The Uglas (centre of glass and edge of glass) without the inner and out outer heat transfer is calculated by</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> Redge=(1/alfain+(rshdin*shdin)+1/uedge</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New";color:white;background:green'>.</span><span lang=EN-GB style='font-family:"Courier New"'> +(rshdout*shdout)+1/alfout)/fe</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> Rcenter=(1/alfain+(rshdin*shdin)+1/ucentr</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New";color:white;background:green'>.</span><span lang=EN-GB style='font-family:"Courier New"'> +(rshdout*shdout)+1/alfout)/fg</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> Rges=Redge*Rcenter/(Redge+Rcenter)</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> </span><span lang=DE style='font-family:"Courier New"'>UGLAS=1/(Rges-1/alfain-1/alfout)</span><span lang=DE> </span><span lang=DE style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>Then the frame is included:</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> UGL(N)=UGLAS* (1.-FFRAM)+UFRAM*FFRAM <span style='color:green'>! total window u-value without inner and outer heat transfer</span></span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New";color:green'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:green'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>Finally the NTYPE 50 is calculated by:</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> <b><span style='color:blue'>CASE</span></b> (50) <span style='color:green'>! u-value of window (glass+frame)with standard inner and outer heat trasnfer coefficients</span></span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New";color:green'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> <b><span style='color:blue'>IF</span></b> (HO.GT.30.) RO=0.04</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> <b><span style='color:blue'>IF</span></b> (HO.LT.0.005) RO=0.0</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> <b><span style='color:blue'>IF</span></b> ((HO.LE.30.).AND.(HO.GE.0.005)) RO=0.13</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> UGLK=1./(1./(UGL(NWI)/3.6)+0.13+RO)</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> <b><span style='color:blue'>ENDIF</span></b></span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New";color:blue'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-family:"Courier New";color:red'> </span><span lang=EN-GB style='font-family:"Courier New"'> OUT(IOUT)=UGLK*3.6</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>Best,</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'>Marion</span><span lang=EN-GB> </span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:navy'><o:p> </o:p></span></p><div><p class=MsoNormal><b><span lang=DE style='color:#005A00'>Dipl.-Ing. Marion Hiller </span></b><b><span lang=DE style='color:#009900'><br></span></b><b><span lang=DE style='color:#007000'>TRANSSOLAR: KlimaEngineering - Technologien für energieeffizientes Bauen und Nutzerkomfort in Gebäude </span></b><b><span lang=DE style='font-size:7.5pt;color:#005A00'><br>Munich - New York - Stuttgart + 49.711.67976.0 <br><br></span></b><b><span lang=DE style='font-size:7.5pt;color:black'>Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart <br>Amtsgericht Stuttgart - HRB 23347, Steuernummer 99073/00911, USt-IdNr.: DE152272639</span></b><span lang=DE> <span style='color:navy'><o:p></o:p></span></span></p><p class=MsoNormal><b><span lang=DE style='font-size:7.5pt;color:black'>Geschäftsführer: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer, Dipl.Phys. Stefan Holst, Prof. Dipl.-Ing. Bleicher </span></b><span lang=DE> </span><b><span lang=DE style='font-size:7.5pt;color:black'><o:p></o:p></span></b></p><div><p class=MsoNormal><span lang=DE style='color:navy'> </span><span lang=DE> </span><span lang=DE style='font-size:12.0pt;font-family:"Times New Roman","serif";color:navy'><o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=DE style='color:navy'><o:p> </o:p></span></p><div><div class=MsoNormal align=center style='text-align:center'><span lang=DE style='font-size:12.0pt;font-family:"Times New Roman","serif"'><hr size=2 width="100%" align=center></span></div><p class=MsoNormal align=center style='text-align:center'><span lang=DE style='font-size:12.0pt;font-family:"Times New Roman","serif"'> </span><span lang=DE><o:p></o:p></span></p><p class=MsoNormal><b><span lang=DE style='font-family:"Tahoma","sans-serif"'>Von:</span></b><span lang=DE style='font-family:"Tahoma","sans-serif"'> Antoine Gautier [mailto:antoine.gautier@solamen.fr] <br><b>Gesendet:</b> Montag, 31. Oktober 2011 18:36<br><b>An:</b> trnsys-users@cae.wisc.edu<br><b>Betreff:</b> [TRNSYS-users] thermal resistance of external shading device</span><span lang=DE> </span><span lang=DE style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p></div><p class=MsoNormal><span lang=DE><o:p> </o:p></span></p><p class=MsoNormal>Dear all <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>I use the surface output Uwin to assess the thermal impact of an external shading device.</span><span lang=EN-US> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>As you know the thermal properties entered for the shading devices are effective only if a shading device is actually defined for the window in the zone description.</span><span lang=EN-US> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I get the following results whereas I specified DeltaR = 0.06 m2.K.h/kJ in input. Does anybody understand this better than I do? i.e. why does the shading factor modify the thermal impact though the shading device is only active during periods of time with zero irradiation? Why do I not get the expected DeltaR in output but half the value?</span><span lang=EN-US> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Shading factor - Uwin w/o shading - Uwin with shading [kJ/h.m2.K] - DeltaR [m2.K.h/kJ]</span><span lang=EN-US> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>1 - 4.93 - 4.22 - 0.034</span><span lang=EN-US> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>0.75 - 4.93 - 4.36 - 0.027</span><span lang=EN-US> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks for your help</span><span lang=EN-US> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span style='color:#404040'>--</span> <span style='color:#404040'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#404040'>Antoine Gautier<br>Solam</span><span style='color:#70B221'>en</span><span style='color:black'><br></span><span style='color:#404040'>+33 6 98 78 56 46</span> <span style='color:#404040'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#404040'>antoine.gautier@solamen.fr</span> <span style='color:black'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>