Hi, <div><br></div><div>When using a vertical borehole heat exchanger (with known resistance), how the so-called "fluid-to-ground" resistance is defined? Practically, in the particular case of a U-tube heat exchanger, is it an "effective" thermal resistance (if there was only one tube) or the thermal resistance for a single tube? <br>
One more thing, the unit is not that clear ("any"). Is it [W/(m.K)]? <br><br>Thanks in advance, </div><div><br></div><div>Have a nice day, </div><div><br></div><div>Regards, <br clear="all"><div><br></div>-- <br>
<div><font color="#999999"><b>Damien Casetta</b></font></div>
<div><br></div><div><font color="#009900"><span style="font-family:sans-serif;font-size:13px;line-height:19px;background-color:rgb(255,255,255)"><b>Chalmers University of Technology </b></span>| Energy and Environment</font><span style="color:rgb(153,153,153)"> </span><font color="#999999">| Exchange student</font></div>
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