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

[KEILHOLZ Werner]

You may want to look at CONTAM, which is available in the standard version of TRNSYS 18 (\Utility\Calling External Programs\CONTAM).

Werner

________________________________
De : TRNSYS-users <trnsys-users-bounces at lists.onebuilding.org> de la part de Habtamu Tkubet via TRNSYS-users <trnsys-users at lists.onebuilding.org>
Envoyé : samedi 11 décembre 2021 17:01
À : David BRADLEY <d.bradley at tess-inc.com>
Cc : Habtamu Tkubet <habtish2000 at gmail.com>; TRNSYS users mailing list at OneBuilding.org <trnsys-users at lists.onebuilding.org>
Objet : Re: [TRNSYS-users] using radiator type131 as a simple hydraulic heating system

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<mailto: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.png]
and the zone temperature to the input of the radiator temperature

[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
<mailto:habtamu-tkubet.ebuy at unvi-lorraine.fr>



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--
***************************
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.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
<mailto:habtamu-tkubet.ebuy at unvi-lorraine.fr>
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