[esp-r] Re: slab-on-grade hydronic floor

[Marco Manzan]

dear Ragnhild

it is not necessary to have a flux connection between zone & plant for a 
hydronic slab, since the heat input is directly inserted into the slab 
structure. You have to check the mass flow rate from the flat panel and the 
temperature of the water. Check also the temperature across the floor 
structure. first during the simulation with "bps" set  Save option to 3 to save 
node temperatures then when checking the results with "res" check the floor 
structure temperatures
Graph -> Intra-fabric -> Xsection temperatures.

Marco Manzan


In data lunedì 25 novembre 2013 15:27:34, Aizaz Samuel ha scritto:
> Ragnhild,
> 
> The building side needs to get heat input/output from the plant side. This
> linkage is done via a type 6 ('Flux connection between zone & plant ')
> controller from the building side.
> 
> Regards,
> Aizaz
> 
> 
> On 25/11/2013 12:16, Ragnhild Haukland Løge wrote:
> Hello,
> 
> I have a simple model of a building with a solar heating system. The solar
> heating system consists of the following components:
> 
> -simplified flat plate collector
> -slab-on-grade hydronic floor
> -variable speed domestic WCH pump
> 
> I have the following connections:
> collector->hydronic floor
> hydronic floor->pump
> pump->collector
> 
> And containments:
> collector: ambient air
> hydronic floor: node within a surface: ground floor inserted into node 2
> (within a concrete layer)
> 
> When i run the simulations with and without the plant network, I get the
> same temperatures inside the building. Hence, it does not seem like the
> solar heating system is contributing to any heat through the floor into the
> building zone at all.
> 
> My question is: Does anyone know if I have to link the plant network in a
> different way or if I may have overlooked something in order to get the
> solar heating system to contribute to heat inside the building.
> 
> Kind regards,
> Ragnhild Løge
> 
> 
> 
> --
> Med vennlig hilsen,
> 
> Ragnhild Haukland Løge
> 
> 
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