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--></style></head><body lang=EN-CA link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Karol,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>It seems that Type 56 cannot cope with the very high values for convection coefficients that you have for the adjacent window. If you change those to 100 kJ/h-m²-K or less the simulation runs normally (i.e. heating seems to do something). <o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>With intermediate values (e.g. 500) the simulation stops with errors that say convergence cannot be reached inside Type 56 for heating, so maybe that’s what is also happening in your original simulation, although there is no trace of the problem in warnings or errors. <o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Michaël Kummert<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CA style='mso-fareast-language:EN-US'>Polytechnique Montréal<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CA style='mso-fareast-language:EN-US'><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>From:</span></b><span lang=EN-US> TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org> <b>On Behalf Of </b>Karol BANDURSKI via TRNSYS-users<br><b>Sent:</b> May 20, 2021 11:35<br><b>To:</b> 'David BRADLEY' <d.bradley@tess-inc.com>; 'TRNSYS users mailing list at OneBuilding.org' <trnsys-users@lists.onebuilding.org><br><b>Cc:</b> Karol BANDURSKI <karol.bandurski@put.poznan.pl><br><b>Subject:</b> Re: [TRNSYS-users] b18 doesn't work<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'>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'>Thank you for hint with CompareIt. All changes which you discover are known for me and unfortunately don’t solve my problem.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Are you try to run simulation on your computer? Do you see the same problem (heating and cooling doesn’t work)?<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'>It is very strange…<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,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Karol<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'><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=PL>From:</span></b><span lang=PL> David BRADLEY [<a href="mailto:d.bradley@tess-inc.com">mailto:d.bradley@tess-inc.com</a>] <br><b>Sent:</b> Thursday, May 20, 2021 4:43 PM<br><b>To:</b> TRNSYS users mailing list at OneBuilding.org <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>><br><b>Cc:</b> Karol BANDURSKI <<a href="mailto:karol.bandurski@put.poznan.pl">karol.bandurski@put.poznan.pl</a>><br><b>Subject:</b> Re: [TRNSYS-users] b18 doesn't work<o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p><span lang=EN-US>Karol,</span><span lang=EN-US style='font-size:12.0pt'><o:p></o:p></span></p><p><span lang=EN-US> I have noticed some similar behavior in TRNBuild. It does not seem to be systematic apart from the zone's thermal capacitance which always gets set back to its default value during the process. When I export a *.b18 to an *.idf, make changes, and then reimport back to a *.b18 I usually take a look at the before and after versions of the *.b18 using a text compare tool (I use CompareIt but there are many others). <o:p></o:p></span></p><p><span lang=EN-US> In your file it looks like a new HEATING type got added (HEAT002) and that the heating in zone "parter" got changed from HEAT001 to HEAT002. The set point temperature for HEAT001 and HEAT002 are the same though so I would have expected the behavior to be the same before and after the changes that you made in the *.idf. <o:p></o:p></span></p><p><span lang=EN-US>The other change I notice is in the windows; two unused WINDOW types were removed and one new one was added.<o:p></o:p></span></p><p><span lang=EN-US>I'm not sure that any of the above will help but I hope it does!<o:p></o:p></span></p><p><span lang=EN-US>best,<o:p></o:p></span></p><p><span lang=EN-US> David<o:p></o:p></span></p><p><span lang=EN-US><o:p> </o:p></span></p><div><p class=MsoNormal><span lang=EN-US>On 05/20/2021 04:17, Karol BANDURSKI via TRNSYS-users 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 Experts,<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 have problem with my b18 file (I use demo version).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>The first model consist of 2 floors connected partially by Virtual Surface and partially by visible surface. In this model I have set heating, cooling, ventilation.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Then I have export model to .idf to change VirtualSuface to partition with ADJ_WINDOW in SketchUp.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>When I upload new building model and set in my general model settings of heating and cooling don’t work – temperature is not kept…<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>Do you know what is the reason?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I enclose both building models (bud1_light and bud2_light) and general model.<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>Kind regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Karol <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal style='background:white'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>--------------------------------------------------------------------</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='background:white'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Karol BANDURSKI Ph.D.</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='background:white'><span lang=EN style='color:black'>Faculty of Environmental and Energy Engineering</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='background:white'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Division of Heating, Air Conditioning and Air Protection</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='background:white'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Poznan University of Technology</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=PL><a href="https://www.researchgate.net/profile/Karol_Bandurski"><span lang=EN-US style='color:blue'>https://www.researchgate.net/profile/Karol_Bandurski</span></a></span><span lang=EN-US><o:p></o:p></span></p><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 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>TRNSYS-users mailing list<o:p></o:p></span></pre><pre><span lang=EN-US><a href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a><o:p></o:p></span></pre><pre><span lang=EN-US><a href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a><o:p></o:p></span></pre></blockquote><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>3 North Pinckney Street - suite 202<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><a href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a><o:p></o:p></span></pre><pre><span lang=EN-US><o:p> </o:p></span></pre><pre><span lang=EN-US><a href="http://www.tess-inc.com">http://www.tess-inc.com</a><o:p></o:p></span></pre><pre><span lang=EN-US><a href="http://www.trnsys.com">http://www.trnsys.com</a><o:p></o:p></span></pre></div></body></html>