<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=us-ascii"> <META content="MSHTML 6.00.2900.3059" name=GENERATOR></HEAD> <BODY> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2>Dear Monika,</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2>The "injection node number" means the node in the construction layer where heat is injected in or retrieved from (in other words, the position of the water pipe in the layer).  Note that ESP-r uses three nodes per construction layer and the node numbering starts from the exterior.</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2>Example: insulated slab on grade:</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2>Layer 1- insulation in contact with ground: node 1 (surface in contact with ground, 2 (centre) and 3 (surface in contact with slab).</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2>Layer 2-concrete slab in contact with interior environment: <SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2>node 4 (surface in contact with insulation, 5 (centre) and 6 (surface in contact with room air).</FONT></SPAN></FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2><SPAN class=140053213-09052007></SPAN></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2><SPAN class=140053213-09052007>So if pipes are placed in the centre of slab, the injection node number will then be 5.</SPAN></FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2><SPAN class=140053213-09052007></SPAN></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2><SPAN class=140053213-09052007>Note, you may add additional layers on top of slab, or you may sub-divide a thick slab into a number of sublayers to get more accurate results.  In this case, just follow the node numbering as explained above or in ESP-r manual.</SPAN></FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2><SPAN class=140053213-09052007></SPAN></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2><SPAN class=140053213-09052007>I hope this helps.</SPAN></FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=140053213-09052007><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV> </DIV> <DIV align=left><FONT face=Arial color=#0000ff size=2><SPAN class=140053213-09052007>A. Laouadi</SPAN></FONT></DIV> <DIV> </DIV><BR> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> <FONT face=Tahoma size=2><B>From:</B> esp-r-bounces@lists.strath.ac.uk [mailto:esp-r-bounces@lists.strath.ac.uk] <B>On Behalf Of </B>Hall Monika<BR><B>Sent:</B> Wednesday, May 09, 2007 7:40 AM<BR><B>To:</B> esp-r@lists.strath.ac.uk<BR><B>Subject:</B> [esp-r] "slab-on-grade hydronic floor" to activate concret slabs<BR></FONT><BR></DIV> <DIV></DIV> <DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT> </DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2>Dear esp-r users,</FONT></SPAN></DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2>I use the plant component "slab-on-grade hydronic floor" to activate concret slabs. Does anybody know what the parameter " Injection node number (integer)" means? </FONT></SPAN></DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2>I down loaded the report from Mr Laouadi:</FONT></SPAN></DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2>"Development of a radiant heating and cooling model for building energy simulation software", but I did not found what it could be.</FONT></SPAN></DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2>It would be nice, if somebody could help me.</FONT></SPAN></DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2>Best regards</FONT></SPAN></DIV> <DIV><SPAN class=666320911-09052007><FONT face=Arial size=2>Monika</FONT></SPAN></DIV></BODY></HTML>