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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=NL link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Dear David and the rest,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>I sent this email more than a week ago but I did not get an answer yet, so I was hoping on a reply.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Benjamin Stobbe<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='color:windowtext'>Van:</span></b><span style='color:windowtext'> TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org] <b>Namens </b>Benjamin Stobbe<br><b>Verzonden:</b> woensdag 26 augustus 2015 14:07<br><b>Aan:</b> 'David BRADLEY' <d.bradley@tess-inc.com>; 'TRNSYS users mailing list at OneBuilding.org' <trnsys-users@lists.onebuilding.org><br><b>Onderwerp:</b> Re: [TRNSYS-users] Question about Type 563 hybrid solar panel<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Dear David,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Thanks for the answer. I looked into the Fortran file, but i don’t know how to recompile the DLL file. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>I had another question yeah I want to understand the total model sorry for the many questions. I was looking to usefull gain and it is a bit strange because it looks like you need a minimum PV power to get some energy gain. Because below 990 kj/hr there is no usefull gain and then suddenly above this 990 kj/hr you have 4560 kj/hr. My panel is 4 by 5 but how can you explain this. Another thing in the summer there is no direct sunlight on the panels because it are facades and the sun in Hong Kong is high in the summer. According to the model there is then also no PV power, but there is still diffuse radiance on the panel and this will heat the panel also up so why no PV Power. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>The last question how is the controller(type 2b) working? I monitored the controller and the pump and the temperatures which go in the controller but until now I cannot find a relation. In the controller and the pump I didn’t change anything compared to the basic model. The pump is type 3b and the controller type 2b. I also already looked in the documentation and I found there you have to look to the difference between the upper and lower limit so I do and compare this with your dead band limits I also did that and what I don’t understand is how this dead band works. I did already multiple tests with no dead band(I understand) but as soon as I try a low or high dead band I cannot find logic in it. I really want to understand it.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>For example the low dead band is 2 and the higher dead band is 10 like the default settings<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Then you expect when the difference is getting higher than 10 the control signal should go on but it happens already before it reaches 10 and it would go off when it drops below the 2 but it sometimes already goes off above 2 and that makes no sense to me. Or has this to do with the number of oscillations. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>I hope to hear from you soon. Thanks in advance.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Benjamin Stobbe<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='color:windowtext'>Van:</span></b><span lang=EN-US style='color:windowtext'> David BRADLEY [<a href="mailto:d.bradley@tess-inc.com">mailto:d.bradley@tess-inc.com</a>] <br><b>Verzonden:</b> vrijdag 21 augustus 2015 1:29<br><b>Aan:</b> TRNSYS users mailing list at OneBuilding.org <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>>; <a href="mailto:benjamin_stobbe@hotmail.com">benjamin_stobbe@hotmail.com</a> >> Benjamin Stobbe <<a href="mailto:benjamin_stobbe@hotmail.com">benjamin_stobbe@hotmail.com</a>><br><b>Onderwerp:</b> Re: [TRNSYS-users] Question about Type 563 hybrid solar panel<o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US>Benjamin,<br> In order to get at additional values that are computed by the Type you'd need to have access to a Fortran compiler and would have to modify the source code, recompile the appropriate DLL, and modify the proformas.<br> <br> As for your question about the outlet temperature being below the inlet temperature, bear in mind that the model takes radiation losses into account and that if you have flow at night you can cool the working fluid down by means of radiation loss from the panel surface to the night sky.<br>regards,<br> David</span><span lang=EN-US style='font-size:12.0pt'><o:p></o:p></span></p><div><p class=MsoNormal><span lang=EN-US>On 08/20/2015 07:31, Benjamin Stobbe wrote:<o:p></o:p></span></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><span lang=EN-US>Dear people,<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>The last week i played around with the Type 563 hybrid solar panel, but i was wondering in the description in the documentation they do a lot more calculations than which are coming out of the model. For example reasons for me to use trnsyst is to see what happens in the hybrid solar panel and I mean the thermal side. The formulas are really clear but if I see what output I can get out of the model I miss some. For example the temperature of the pc cell so how warm will the pv cell becomes this is interesting to know because in that way you can see how much you cool the panel down with the flow of water on the backside. <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>Some results which coming out of the model don’t make sense for me for example how is it possible that the outlet temperature is lower than the inlet temperature and also lower than the ambient temperature. Looks like the solar panel is cooling the water down and I think this is a bit strange.<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>I hope to hear from you soon.<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>Best regards,<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>Benjamin Stobbe<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif'><br><br><o:p></o:p></span></p><pre><span lang=EN-US>_______________________________________________<o:p></o:p></span></pre><pre><span lang=EN-US>TRNSYS-users mailing list<o:p></o:p></span></pre><pre><a href="mailto:TRNSYS-users@lists.onebuilding.org"><span lang=EN-US>TRNSYS-users@lists.onebuilding.org</span></a><span lang=EN-US><o:p></o:p></span></pre><pre><a href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org"><span lang=EN-US>http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</span></a><span lang=EN-US><o:p></o:p></span></pre></blockquote><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><pre><span lang=EN-US>-- <o:p></o:p></span></pre><pre><span lang=EN-US>***************************<o:p></o:p></span></pre><pre><span lang=EN-US>David BRADLEY<o:p></o:p></span></pre><pre><span lang=EN-US>Principal<o:p></o:p></span></pre><pre><span lang=EN-US>Thermal Energy Systems Specialists, LLC<o:p></o:p></span></pre><pre><span lang=EN-US>22 North Carroll Street - suite 370<o:p></o:p></span></pre><pre><span lang=EN-US>Madison, WI 53703 USA<o:p></o:p></span></pre><pre><span lang=EN-US><o:p> </o:p></span></pre><pre><span lang=EN-US>P:+1.608.274.2577<o:p></o:p></span></pre><pre><span lang=EN-US>F:+1.608.278.1475<o:p></o:p></span></pre><pre><a href="mailto:d.bradley@tess-inc.com"><span lang=EN-US>d.bradley@tess-inc.com</span></a><span lang=EN-US><o:p></o:p></span></pre><pre><span lang=EN-US><o:p> </o:p></span></pre><pre><a href="http://www.tess-inc.com"><span lang=EN-US>http://www.tess-inc.com</span></a><span lang=EN-US><o:p></o:p></span></pre><pre><a href="http://www.trnsys.com"><span lang=EN-US>http://www.trnsys.com</span></a><span lang=EN-US><o:p></o:p></span></pre></div></body></html>