[esp-r] Re: Slab-on-grade hydronic floor / WCH converging 2-leg junction

[Haddad, Kamel]

Dear Udo,

For water flow converger and diverger you can use plant components 46 and 47, respectively.

For the control of the radiant slab you will specifying, for plant control, that you're controlling the flow to the slab based on the temperature sensed in the zone. It seems then possible to specify more than one slab for the same zone.

Kamel Haddad

-----Original Message-----
From: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of Udo Schuster
Sent: May 30, 2007 5:47 AM
To: esp-r at lists.strath.ac.uk
Subject: [esp-r] Slab-on-grade hydronic floor / WCH converging 2-leg junction



Dear all, dear Mr Laouadi,

I am trying to create a cubical zone with one embedded slab in each of the six surfaces.
Is this possible in general?

To start simple, I reduced the problem to two slabs.
I created two control files which refer to the same zone.
The problem is, that only one control loop can be linked to the zone and therefore only one slab that can be linked to the zone.

In consequence, I tried two build the cubical out of several zones. I could link now one control loop to one zone, but now I have problems at component level:

I have the following components in my plant:
- 1 source (air & water temperature source)
- 1 pump
- 2 slabs
- 2 2-leg junctions

As a link between pump and slab I chose the WCH converging 2-leg junction at both ends of a slab.
When I run the simulation, I have problems with the converging 2-leg junction. Can I also use it as a diverging 2-leg junction or do I need a seperate component? I already scanned the component list, but could find only water flow diverger which don't seem to fit.

Can anybody help me?


Kind regards
Udo

--
Dipl.-Ing. (FH) Udo Schuster
Dep. Thermal Systems and Buildings
Fraunhofer-Institut für Solare Energiesysteme ISE Heidenhofstrasse 2, 79110 Freiburg, Germany
Phone: +49(0)761/4588-5309 Fax: +49(0)761/4588-9000 udo.schuster at ise.fraunhofer.de http://www.ise.fraunhofer.de 


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