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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I am not sure if the PSO in GenOpt is a multi-objective algorithm... if not, you need to set the weighting between the two objectives "right" in order to get the desired result. Try jEPlus+EA for a multi-objective approach, which will show you the trade-off between performance and cost: http://www.jeplus.org/wiki/doku.php?id=docs:jeplus_ea:features<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Seeing the trade-off will help you answer your second question, too.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Yi<o:p></o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></a></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Free<br><b>Sent:</b> 13 April 2016 14:47<br><b>To:</b> trnsys-users<br><b>Subject:</b> [TRNSYS-users] (PLEASE)optimization of a solar heating system combined with dual-source heatpump<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'>Dear all<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'>I am now doing a project named "optimization of a solar heating system combined with dual-source heatpump(dual-source:water in storage tank and outdoor air)" in trnsys for my master degree thesis, the system is just used for space heating in heating season at a high and cold area where the solar radiation is not so good.The schematic diagram of the system is as follow:<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'><img width=903 height=315 id="_x0000_i1025" src="cid:image001.jpg@01D19598.BDC5CEC0"><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'>I want to find the best configuration of the system (include the area of the collectors, the angle of azimuth&dip of the collector, the constant flowrate of the collectors, the volume of the storage tank ) .when i simulated it in trnsys and genopt using PSO ,i tried to set the object function as the sum of energy consumption in a year or the life circle cost of the system ,it turned out that the optimised area of collector is awalys to be the low limit of the collectors range i set in the genopt, may be it is the truth,i am confused.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'>another question which is really important to me:<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'>Has anyone has the experience of optimization in similar system?how to confirm the best area of collector of the system?<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'>any advice is much appreciated.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'>Ware<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif";color:black'>best regards<o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><p> <o:p></o:p></p></div></body></html>