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<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#414141">Dear all<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#414141"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141">Does anyone know the details of how the borehole thermal resistance is handled in type 557b. I have an estimate for the effective borehole resistance from a thermal
response test and guessed I could use this value for “Fluid to ground resistance” (parameter 11) if I set “Negative of pipe to pipe resistance” (parameter 12) to zero. I gather the units for the resistance should be [ m K h/kJ], however I have run a TRNOPT
optimization using operational data from the site and get back reasonable estimates for the storage thermal conductivity and heat capacity while the estimated thermal resistance is off roughly by a factor of 10. This seems to indicate I am not using the model
correctly.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141">I would be most grateful if anyone can offer any insight.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">Best regards<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><b><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">Karl Woldum Tordrup, ph.d.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:11.0pt"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">Associate professor<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">Centre of Applied Research & Development in Building, Energy & Environment<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">VIA University College<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">Chr. M. Østergaards Vej 4</span><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">DK-8700 Horsens<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">T: +45 87 55 42 25<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA">E:
<a href="mailto:KART@VIA.DK" title="KART@VIA.DK"><span style="color:#414141;text-decoration:none">kart@via.dk</span></a><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA"><a href="http://www.via.dk/" title="www.via.dk"><span style="color:#414141;text-decoration:none">www.via.dk</span></a><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:11.0pt"><span style="font-family:"Arial","sans-serif";color:#414141;mso-fareast-language:DA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#414141;mso-fareast-language:DA"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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