<div dir="ltr"><b>Hello all,</b><div><br></div><div>I designed the attached .idf file with sketchup 2019 and TRNSYS3D (it is just 1 zone). While I try to define a multizone project in TRNSYS, it keeps saying "At least 2 surfaces are required per zone.". I only have 1 zone and As you can see there are many surfaces in it. <br><div>Could you please help me with understanding what the problem is?<br>Thanks in advance.<br>PS. I just found this solution for a similar problem but it did not help. </div><div><a href="http://onebuilding.org/archive/trnsys-users-onebuilding.org/2013-March/024852.html">http://onebuilding.org/archive/trnsys-users-onebuilding.org/2013-March/024852.html</a> <font color="#888888"><br clear="all"><div><br></div></font></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><p style="margin:0px 14.2pt 0px 0px;color:rgb(34,34,34)"><span style="color:black"><b>Kind regards, <u></u><u></u></b></span></p>
<p style="margin:0px 14.2pt 0px 0px;color:rgb(34,34,34)">
<span style="color:black">Soheil </span> </p><p><font face="tahoma, sans-serif" color="#000000"> <br></font></p><img src="cid:ii_kpwbtlh22" alt="image.png" width="562" height="294"><br><p><font face="tahoma, sans-serif" color="#000000"><br></font></p></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 14, 2021 at 10:28 AM Mohaned Hossam via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hello TRNSYS Users,<div>Kindly i would like to know how to link the soil properties with the buried heat exchanger, and if there is a ready model for this tsask<br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><font color="#0b5394"><span style="font-size:12.8px">Yours Sincerely,</span><br style="font-size:12.8px"></font><span style="font-size:12.8px"><font color="#0b5394">Mohaned Hossam Aly</font><br></span><i><span style="font-size:12pt;font-family:Vivaldi;color:rgb(192,0,0)">Mohaned Hossam</span></i> <br style="color:rgb(0,0,0);font-size:12.8px"><font color="#0b5394"><span style="font-size:12.8px">Mechanical Engineer</span><br style="font-size:12.8px"><span style="font-size:12.8px">(+202)01006715780 </span></font><br style="color:rgb(0,0,0);font-size:12.8px"><a href="mailto:Mohanedhossam11@gmail.com" style="font-size:12.8px" target="_blank">Mohanedhossam11@gmail.com</a> <br></div></div></div></div>
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