[TRNSYS-users] Underfloor heating

Fri Jun 3 11:09:29 PDT 2022

Said,

  Thank you for the additional clarification; the layers are not 
mirrored by TRNBuild/Type56. Define the construction using the wall 
manager and then make sure that the front/back is set in one of the two 
zones.

kind regards,

  David

On 06/03/2022 11:54, Said LAMGHARI wrote:
> Dear David;
> The picture that I included it is what I'm concerned might be happening.
> in fact the building has two parts. the first one is for adjacent area 
> and other it is intended for a ground floor. at the moment I work 
> adjacent area.
> Thank you for the precious advice.
> Best.
> Said LAMGHARI
> ------------------------------------------------------------------------
> *De :* David BRADLEY <d.bradley at tess-inc.com>
> *Envoyé :* jeudi 2 juin 2022 20:15
> *À :* Said LAMGHARI <said.lamghari at edu.uca.ma>; TRNSYS users mailing 
> list at OneBuilding.org <trnsys-users at lists.onebuilding.org>
> *Objet :* Re: [TRNSYS-users] Underfloor heating
>
> Said,
>
>  I am not sure I understand whether you are trying to create a 
> construction that has 2 layers of heating tubes or whether you are 
> trying to avoid creating such a construction. Can you please clarify 
> whether the picture that you included is what you want to model or if 
> it is what you are concerned might be happening?
>
>
>  In general, an ADJACENT wall (or floor or ceiling) defined in 
> TRNBuild does not have any mirroring in it. You create the layers of 
> the wall however you wish and then you go to one of the two zones to 
> which the wall is adjacent and you set whether that zone contains the 
> front or the back of the wall. So if the construction you create is 
> made up of the layers: sol, dale, tubes, chape, parquet and you define 
> that construction to be ADJACENT (between two zones) then one of the 
> zones will have the "sol" face and the other zone will have the 
> "parquet" face in it.
>
>
>  If, on the other hand, you want to have a construction that has two 
> active layers in it you'll need to define something called a "direct 
> contact" zone in between them. This is a kind of very low volume 
> virtual airnode that sits between two BOUNDARY constructions. Defining 
> one can be confusing so if the picture below represents what you want, 
> please let me know and I'll try to explain how to do it.
>
>
>  Two side notes:
>
>
> 1. the picture you sent seems like it is intended for a ground floor 
> rather than for an adjacent floor (given the compacted soil layer). If 
> that is indeed the case then you'll want to define the construction as 
> a BOUNDARY rather than as ADJACENT.
>
> 2. you're going to need to sandwich the tubing layer between two 
> screed (chape) layers. When you are defining the construction enter 
> the first screed layer as having half of the actual layer's thickness. 
> Next add the active layer and a second screed layer will be added 
> below it. You can move the tubing layer up and down in the screed 
> layer by adjusting the thickensses of the two adjoining layers but you 
> can't put the tubing at the very bottom of the screed layer as it is 
> pictured in your drawing.
>
>
> kind regards,
>
>  David
>
>
>
> On 06/01/2022 14:48, Said LAMGHARI wrote:
>> Dear David;
>> The creation of a floor or wall is done from the inside to the outside.
>> When I change the construction type of two adjacency room.
>> I notice that it applies to the wall or the ceiling of the other 
>> room. I noticed that it is the mirror effect on the adjacency walls.
>> The attached figure shows my idea that I have on the floor study. 
>> please confirm this to me,  if I m right or not.
>> Best.
>> Said LAMGHARI
>>
>>
>> ------------------------------------------------------------------------
>> *De :* David BRADLEY <d.bradley at tess-inc.com> 
>> <mailto:d.bradley at tess-inc.com>
>> *Envoyé :* mercredi 1 juin 2022 15:23
>> *À :* TRNSYS users mailing list at OneBuilding.org 
>> <trnsys-users at lists.onebuilding.org> 
>> <mailto:trnsys-users at lists.onebuilding.org>
>> *Cc :* Said LAMGHARI <said.lamghari at edu.uca.ma> 
>> <mailto:said.lamghari at edu.uca.ma>
>> *Objet :* Re: [TRNSYS-users] Underfloor heating
>>
>> Said,
>>
>>  Trnsys tries to mimic what would happen in a real world situation; 
>> if you put an active layer into a floor that is also the ceiling of 
>> another zone and put hot water through it then the floor/ceiling will 
>> heat both the zone above and the zone below. To prevent that from 
>> happening, you can put insulation on the side that you do not want to 
>> be heated.
>>
>> kind regards,
>>
>>  David
>>
>>
>>
>>
>> On 06/01/2022 04:35, Said LAMGHARI via TRNSYS-users wrote:
>>> Dear All,
>>> I have a question about underfloor heating.
>>> Between the floor and the ceiling of two adjacent rooms 
>>> (ADJ_ceiling) . Do you have any idea about underfloor heating. since 
>>> we will have the mirror effect on this floor so we will have two 
>>> active layers..! or not!
>>> Best,
>>> Said LAMGHARI
>>>
>>> _______________________________________________
>>> TRNSYS-users mailing list
>>> TRNSYS-users at lists.onebuilding.org  <mailto:TRNSYS-users at lists.onebuilding.org>
>>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org  <http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org>
>> -- 
>> ***************************
>> David BRADLEY
>> Principal
>> Thermal Energy System Specialists, LLC
>> 3 North Pinckney Street - suite 202
>> Madison, WI  53703 USA
>>
>> P:+1.608.274.2577
>> d.bradley at tess-inc.com  <mailto:d.bradley at tess-inc.com>
>>
>> http://www.tess-inc.com  <http://www.tess-inc.com>
>> http://www.trnsys.com  <http://www.trnsys.com>
> -- 
> ***************************
> David BRADLEY
> Principal
> Thermal Energy System Specialists, LLC
> 3 North Pinckney Street - suite 202
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> d.bradley at tess-inc.com  <mailto:d.bradley at tess-inc.com>
>
> http://www.tess-inc.com  <http://www.tess-inc.com>
> http://www.trnsys.com  <http://www.trnsys.com>

-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
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