<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Ismail,</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Your approach of connecting the soil temperature to the boundary temperature will work but will likely over-estimate the loads - sometimes significantly. The storage in the ground around the basement can play an important role. There are several good ground modeling components out there but I would recommend Type1267 from TESS after looking at your schematic. The model will likely slow down the simulation but will provide MUCH more realistic results. And with the included soil temperature viewer you'll be able to visualize the heat transfer into the soil. We use it on all of our basement projects. There are several tricks we can share to help with the simulation speed issue too.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Jeff Thornton<br><br>Sent from my iPhone</div><div><br>On Nov 4, 2016, at 12:55 PM, Issmail OUHALLOU via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)">Dear Trnsys-experts,</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)">Would anyone happen to have an experience on advanced building modeling with basements included? I am trying to model a building in TRNSYS 17 using type 56. My building includes three basements as shown in figure below.</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)"><317.4.1f-Fluchtwege-UG7.6.gif><br>I am wondering if what I have done puts me in the right path, to know: I used Type 77 to model a simple ground temperature, then the output (soil temperature at Node) has been connected to TBOUNDARY. In fact, I have set three Nodes in type 77 (one node for each basement) and the walls's boundary conditions of the basements are = 1*TBOUNDARY.</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)">Thanks in advance</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)">Regards,</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:rgb(0,0,0)">Ismail</div><img width="0" height="0" class="mailtrack-img" src="https://mailtrack.io/trace/mail/37b4ba31f36073f45030afbe969d5e664a6c9571.png?u=633613"></div>
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