<div dir="ltr"><div>Hi, </div><div><br></div><div>I am modelling a drainback SDWH with TRNSYS 17 but in such system while it's working there is water in the collectors and when it stops the water drains to the tank and air replaces water in the collectors. </div>
<div><br></div><div>My question; is there a way how to define these two fluids in the collectors?</div><div><br></div><div>Best regards</div><div> </div><br clear="all"><div><div dir="ltr"><div><div style="font-family:'Times New Roman';font-size:16px">
<blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><b><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(228,166,0)">Malak Dakhli, ing., M.Sc. </span></b><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(64,64,64)">Chercheuse / <i>Researcher<br>
</i></span><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(38,38,38)">Chaire de recherche industrielle en technologies de l'énergie et en efficacité énergétique (T3E) /<br></span><i><span lang="EN-US" style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(38,38,38)">Industrial research chair in technologies of energy and energy efficiency (T3E)<br>
</span></i><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(64,64,64)">École de technologie supérieure,1100 Notre-Dame Ouest, Montreal, Qc, Canada, H3C 1K3<br></span><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(64,64,64)"><a value="+14188352110" style="color:rgb(17,85,204)">+1 514 559-3889</a> | </span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><a href="mailto:mostafa@t3e.info" style="color:rgb(17,85,204)" target="_blank"><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(228,166,0)">malak.dakhli@gmail.com</span></a></span><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(228,166,0)"> </span><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(64,64,64)">| </span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><a href="mailto:mostafa@t3e.info" style="color:rgb(17,85,204)" target="_blank"><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(228,166,0)">malak@t3e.info</span></a></span><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(228,166,0)"> </span><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(64,64,64)">| </span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><a href="http://www.t3e.info/" style="color:rgb(17,85,204)" target="_blank"><span style="font-size:8pt;font-family:Arial,sans-serif;color:rgb(228,166,0)">www.t3e.info</span></a></span></blockquote>
</div></div><div><div><br></div><div><b style="font-family:'Times New Roman';font-size:16px">La Ville de Lévis, la Conférence Régionale des Élus de Chaudière-Appalaches, Énergie Valero Inc. et Ecosystem, partenaires et piliers de t3e : merci</b><i style="color:rgb(0,0,153);font-family:'comic sans ms',sans-serif"><br>
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