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<TITLE>About Ntypes 50 and 51 (Uwin and SHGC)</TITLE>
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<P><FONT SIZE=2 FACE="Arial">Hi Trnsys users, </FONT>
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<P><FONT SIZE=2 FACE="Arial">I am trying to import a Window 5 model into TRNSYS but I am a bit struggling because Ntypes 50 and 51 does not give me the same results as Window 5.2.17.a .</FONT></P>
<P><FONT SIZE=2 FACE="Arial">As far as I know, Window 5 calculates a global U-value and SHGC regarding to specific environmental conditions (for instance I chose CEN conditions) that I have reproduced in TRNSYS (2 different simulations, one for Uwin, another for g-win).</FONT></P>
<P><FONT SIZE=2 FACE="Arial">I imported the DOE2 report as explained in the well known tutorial (</FONT> <A HREF="http://sel.me.wisc.edu/trnsys/downloads/tutorials_and_examples/window41/window41.htm"><U><FONT COLOR="#0000FF" SIZE=2 FACE="Courier New">http://sel.me.wisc.edu/trnsys/downloads/tutorials_and_examples/window41/window41.htm</FONT></U></A><FONT SIZE=2 FACE="Courier New">)</FONT><FONT SIZE=2 FACE="Arial"> and I also paid attention to using the right coefficients for frame and so on…</FONT></P>
<P><FONT SIZE=2 FACE="Arial">I came to the results that Trnsys Uwin is quite the same as Window 5 U-value but the g-value given by TRNSYS is far too small compared to Window 5 's one (SHCG of center of glass).</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Has anybody ever done this kind of test ? Can somebody explain the difference I've got in my results ?</FONT>
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<P><FONT SIZE=2 FACE="Arial">If someone's interested in this subject I can easily send a simple model.</FONT>
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<P><FONT SIZE=2 FACE="Arial">Thanks !</FONT>
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<P><FONT SIZE=2 FACE="Arial">Romain Huchedé</FONT>
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