[TRNSYS-users] using radiator type131 as a simple hydraulic heating system

[Habtamu Tkubet]

Dear David
Thank you very much for your feedback.
I have bought the licensed TRNSYS 18 software but without the TRNFlow which
is highly required for my model to calculate the project Indoor air quality
with the consideration of contaminant transfer and now I do not have the
financial support to buy the TRNFLOW,
do any one of you who can send me the TRNFLOW or recommend me if there is a
way to handle my situation
Thanks in advanced


On Wed, Dec 8, 2021 at 6:49 PM David BRADLEY <d.bradley at tess-inc.com> wrote:

> Habtamu,
>
>  That is the correct method. I usually define a gain in TRNBuild that is
> called "QRADIATOR" and that sets the split between how much of the gain is
> convective and how much is radiative. Although we call them "radiators"
> usually about 80% of their heat gain is convective. So my QRADIATOR has 0.8
> set as its convective part and 0.2 set for its radiative part. Then in each
> zone, I select that QRADIATOR gain and I scale it by the input value that
> comes from Type1231.
>
> If you are not seeing as much heat output as you expect from your radiator
> recall that usually the design heat output assumes an air temperature of
> about 10C. If you then try to maintain something more like 20C in the zone
> then the radiator will not put out anywhere near the design heat amount. It
> will put out measurably less.
>
> kind regards,
>
>  David
>
>
> On 12/07/2021 10:25, Habtamu Tkubet via TRNSYS-users wrote:
>
> Dear David
> Hope you are doing well and safe. I appreciate your support in answering
> all related questions in TRNSYS. I have tried to type 1231 radiator for my
> two-store building type56 in order to give a heating system for a room of
> 13*7*3.8m on the ground floor, however, still, I am not sure enough on the
> result.
> let me explain, some of the steps I followed to model the system
> 1. I added Radiator as miscellaneous in TRNBuild gain/loss and
> considering in the convective  "1*input"
> 2. I connected each radiator output of "Heat Transfer" to the type56 to
> Input
> [image: image.png]
> and the zone temperature to the input of the radiator temperature
>
> [image: image.png]
> let me know if I am going in the right way?
>
>
> --
>
> ------------------------------------------------------------------------------------------------------
> Habtamu Tkubet
> Doctorant
> *Université de Lorraine*
> Faculté des Sciences & Technologies - LERMAB and CRAN
>  Epinal, France
> Tél :+2519 11 79 05 22 /773623147
> email:- habtish20002 at gmail.com <http://habtish20002gmail.com/>;
> habtamu-tkubet.ebuy at unvi-lorraine.fr
>
> _______________________________________________
> TRNSYS-users mailing listTRNSYS-users at lists.onebuilding.orghttp://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:+1.608.274.2577d.bradley at tess-inc.com
> http://www.tess-inc.comhttp://www.trnsys.com
>
>

-- 
------------------------------------------------------------------------------------------------------
Habtamu Tkubet
Doctorant
*Université de Lorraine*
Faculté des Sciences & Technologies - LERMAB and CRAN
 Epinal, France
Tél :+2519 11 79 05 22 /773623147
email:- habtish20002 at gmail.com <http://habtish20002gmail.com/>;
habtamu-tkubet.ebuy at unvi-lorraine.fr
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