<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Marshall,<br>
Usually the way radiant floors are set up is that there is a manifold
from which a number of parallel flow loops depart. The "looping back
and forth" (ie the path of a given piping loop through the floor) is
built into the model's algorithms. In setting up the floor, you
specified a pipe to pipe distance and in setting up the floor, you
specified an area. In order to figure out how long each pipe is, the
model needs to know how many parallel loops there are. There is an
equation in the 06-Multizone Building manual that shows how you can
calculate the number of loops from the floor area, pipe length, and
pipe-to-pipe distance.<br>
<br>
I think in the example that you give, you'd have a single fluid inlet
and 2 loops. The 25 times doesn't matter to the model. Segmentation is
only necessary in order to keep the specific mass flow rate of liquid
high enough to be in the range of the model.<br>
<br>
Kind regards,<br>
David<br>
<br>
<br>
Marshall L Sweet/sweetml/O/VCU wrote:
<blockquote
cite="mid:OF85208A8E.45F01556-ON852575E5.0070FF0D-852575E5.0070FF1D@vcu.edu"
type="cite"><font
face="Default Sans Serif,Verdana,Arial,Helvetica,sans-serif" size="2">TRNSYS
users,<br>
<br>
Does anyone know what the actual physical meaning of "number of fluid
loops" when defining and active layer? <br>
<br>
If I want to model a radiant heated floor that had 1 fluid input but
that input looped back and forth 25 times in a zone, would the number
of loops then be 25?<br>
<br>
What if I had a zone that had two fluid inputs and both inputs looped
back and forth 25 times each?<br>
<br>
Also I have been unable to get the autosegmentation feature to put my
floor in segments. When I click the "DO" button it still says no
segmentation, is this because maybe my zones are small enough that they
don't need segmented or is something wrong? <br>
<br>
<br>
Thanks,<br>
<br>
Marshall<br>
</font>
<pre wrap="">
<hr size="4" width="90%">
_______________________________________________
TRNSYS-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@cae.wisc.edu">TRNSYS-users@cae.wisc.edu</a>
<a class="moz-txt-link-freetext" href="https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users">https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
***********************************************************************
Thermal Energy System Specialists (TESS), LLC
David BRADLEY 22 N. Carroll Street - Suite 370
Partner Madison, WI 53703
USA
P: +1.608.274.2577
F: +1.608.278.1475
E-mail: <a class="moz-txt-link-abbreviated" href="mailto:bradley@tess-inc.com">bradley@tess-inc.com</a>
Web Pages: <a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a> and <a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a>
***********************************************************************</pre>
</body>
</html>