<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"><!-- P {margin-top:0;margin-bottom:0;} --></style>
</head>
<body dir="ltr">
<div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif;" dir="ltr">
<div>Hello,</div>
<div><br>
</div>
<div>I am working on a project on heating a house with a heat pump. I designed a Trnsys3D model of the house, which I need to implement a floor heating system on it. After adding an active layer in TRNbuild, got the error "<span>Specific fluid mass flow of
active layer in surface 16 below minimum value of 2.96 kg/m2h Please, increase the minimum mass flow rate or use the autosegmentation feature of TRNBuild for subdividing the surface.</span>".</div>
<div><br>
</div>
<div>As I have a 3d model, the Autosegmentation is not possible. Therefore, following TRNbuild documentation "<span>For airnodes with 3D geometric information the splitting of surfaces have to be done in Trnsys3D and then manually connected</span>", I split
my floors (in Sketchup) into 20 equal surfaces using parallel lines and imported my 3d model back to TRNbuild. </div>
<div><br>
</div>
<div>Here are my questions:</div>
<div><br>
</div>
<div>1) How should <span style="display: inline !important; float: none; background-color: rgb(255, 255, 255); color: rgb(0, 0, 0); font-family: Calibri,Helvetica,sans-serif,"EmojiFont","Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">
be </span>the surfaces split in Trnsys3D? Have I used the right approach?</div>
<div>2) How can they be manually connected? (when the Autosegmentation is done, surfaces are automatically connected in series with automatic inlet temperature and the same inlet flow rate)<br>
</div>
<div>3) After splitting the floors, which output shows the overall heat transfer to the zone and which one shows the final outlet fluid temperature?</div>
<div>4) What should be the standard number of fluid loops per square meter?</div>
<div><br>
</div>
<div><br>
</div>
<div>Best regards</div>
<div>Hoofar Hemmatabady</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
</body>
</html>