<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px">COMMENT ON PEUT TRCER LE RENDEMENT INSTANTANE DE CAPTEUR SUR TRNSYS.JE DEMANDE LES ETAPES QUI NOUS LES SUIVONS.<br><div id="yui_3_16_0_ym19_1_1498394399978_8690"><span></span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> Le Dimanche 25 juin 2017 14h43, BOUALAMALLAH AHMED AMINE <b20amine@yahoo.fr> a écrit :<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv7060781723"><div><div style="color:#000;background-color:#fff;font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px;"><div id="yiv7060781723yui_3_16_0_ym19_1_1498394399978_7025"><span></span></div> <div class="yiv7060781723qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv7060781723yahoo_quoted" style="display:block;"> <div style="font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr"><font size="2" face="Arial"> Le Mercredi 21 juin 2017 3h45, Jeff Thornton via TRNSYS-users <trnsys-users@lists.onebuilding.org> a écrit :<br clear="none"></font></div> <br clear="none"><br clear="none"> <div class="yiv7060781723y_msg_container"><div class="yiv7060781723yqt9141221880" id="yiv7060781723yqt98236"><div dir="ltr">Did you take into account the incidence angle modifiers when you calculated the efficiency?<br clear="none"><br clear="none">As for the second issue, did you account for any pipe losses or pump energy gains to the fluid? Did you look to see if the differences you're calculating are within your simulation tolerances?<br clear="none"><br clear="none">Jeff - TESS<br clear="none"><br clear="none">Sent from my iPhone<br clear="none"><div class="yiv7060781723yqt5959409348" id="yiv7060781723yqtfd73350"><br clear="none">> On Jun 20, 2017, at 8:11 PM, Rm Chemilo via TRNSYS-users <<a rel="nofollow" shape="rect" ymailto="mailto:trnsys-users@lists.onebuilding.org" target="_blank" href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>> wrote:<br clear="none">> <br clear="none">> <br clear="none">> In this attachment file, I tried to calculate hourly thermal efficiency of solar collector by using this two equation </div></div></div><div class="yiv7060781723yqt5959409348" id="yiv7060781723yqtfd07431">> and </div>> . But after comparing the result, why the hourly efficiency different?<br clear="none">> <br clear="none">> And also please check "Comparison Energy balance" sheet. I don't understand why q gain from solar collector has different value with qin storage. even though in the example there is no heat exchanger between solar collector and storage.<br clear="none">> <br clear="none">> <br clear="none">> Thank you.<br clear="none">> <br clear="none">> <br clear="none">> <TRNSYS EXAMPLE SDHW.xlsx><div class="yiv7060781723yqt5959409348" id="yiv7060781723yqtfd55908"><br clear="none">> _______________________________________________<br clear="none">> TRNSYS-users mailing list<br clear="none">> <a rel="nofollow" shape="rect" ymailto="mailto:TRNSYS-users@lists.onebuilding.org" target="_blank" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a><br clear="none">> <a rel="nofollow" shape="rect" target="_blank" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a></div><div class="yiv7060781723yqt5959409348" id="yiv7060781723yqtfd34281">_______________________________________________<br clear="none">TRNSYS-users mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:TRNSYS-users@lists.onebuilding.org" target="_blank" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a><br clear="none"></div><br clear="none"><br clear="none"></div> </div> </div> </div></div></div></div><br><br></div> </div> </div> </div></div></body></html>