<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi <div><br></div><div>not sure what you mean. What turned out zero? All the values in the res-variables you name? Or your subsequent calculations? Anyway, there is no straightforward way to extract the U-value (if that is what you mean with comprehensive transfer coefficient) of a double facade construction. </div><div><br></div><div>I would recommend using a simple tool like WIS to compare your window / facade constructions in regard to basic parameters (g-value, U-value). And look at overall loads to compare the impact on the building as a system.</div><div><br></div><div>Regards</div><div>Achim</div><div><br></div><div><br><div><div>On May 15, 2010, at 1:31 PM, 王菊花 wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div class="hmmessage" style="font-size: 10pt; font-family: Verdana; ">Dear Dear all，<br> I am puzzled again.I am simulating an low-carbon building with double-skin facade for the south facade.I need calculate out the comprehensive transfer coefficient h(W/m2.K),then compare it with that of normal single window.I was thinking maybe I can output the temperature and heat conduction of the interior and exterior surfaces.But when I used the<span class="Apple-converted-space"> </span><em><font color="#ff0000">surface fluxes</font></em><span class="Apple-converted-space"> </span>facility,and choosed<span class="Apple-converted-space"> </span><font color="#ff0000"><em>conduction(inside)<span class="Apple-converted-space"> </span><font color="#000000">or</font> conduction(other face),</em></font><font color="#000000">it turned out all zero.Why?</font><br><br><hr>使用Messenger保护盾2.0，支持多账号登录！<span class="Apple-converted-space"> </span><a href="http://www.windowslive.cn/safe/" target="_new">现在就下载！</a><span class="Apple-converted-space"> </span>_______________________________________________<br>esp-r mailing list<br><a href="mailto:esp-r@lists.strath.ac.uk">esp-r@lists.strath.ac.uk</a><br><a href="http://lists.strath.ac.uk/mailman/listinfo/esp-r">http://lists.strath.ac.uk/mailman/listinfo/esp-r</a></div></span></blockquote></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><a href="mailto:achim.geissler@intergga.ch">achim.geissler@intergga.ch</a></div><div><br></div><div><br></div></div></span><br class="Apple-interchange-newline"> </div><br></div></body></html>