[TRNSYS-users] TRNSYS models for longwave radiation exchange withina zone

[Marion Hiller]

Dear Simge,

perhaps the attached pdf helps understanding the difference.

Best regards,

Marion

Dipl.-Ing. Marion Hiller 
TRANSSOLAR: KlimaEngineering - Technologien für energieeffizientes Bauen 
und Nutzerkomfort in Gebäude 
Munich - New York - Stuttgart + 49.711.67976.0 

Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart 
Amtsgericht Stuttgart - HRB 23347, Steuernummer 99073/00911, USt-IdNr.: 
DE152272639
Geschäftsführer: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer, 
Dipl.Phys. Stefan Holst, Prof. Dipl.-Ing. Bleicher 

 

-----Ursprüngliche Nachricht-----
Von: simge andolsun [mailto:simgeandolsun at gmail.com] 
Gesendet: Dienstag, 12. April 2011 00:54
An: duffy at tess-inc.com
Cc: trnsys-users at cae.wisc.edu
Betreff: Re: [TRNSYS-users] TRNSYS models for longwave radiation 
exchange withina zone

Dear Matt Duffy,

Thanks for recommending these resources. I have read them, but I am
still not clear what is the difference between the standard (starnet)
model and the simple (combined) method. In the TRNSYS 17 manual
section Section 5.4.1.6, there is no explanation for the simple
(combined) method (pg. 5-153). Could you please explain what is meant
by simple (combined) method? What is its difference from the standard
(starnet) model?

Thanks in advance,
Best Regards,
Simge Andolsun

On Wed, Apr 6, 2011 at 3:10 PM, Matt Duffy <duffy at tess-inc.com> wrote:
>
> Dear Simge,
>
> Section 5.4.1.6. of the documentation goes into detail about the long 
wave
> radiation exchange. There was also a paper at BS2009.
> http://www.ibpsa.org/proceedings/BS2009/BS09_1983_1988.pdf
>
>
> Best regards,
>
> Matt Duffy
>
> ----- Original Message -----
> From: "simge andolsun" <simgeandolsun at gmail.com>
> Sent: Mon, April 4, 2011 21:23
> Subject:[TRNSYS-users] TRNSYS models for longwave radiation exchange
> withina zone
>
>
> Dear TRNSYS users,
>
> I am trying to understand the differences between the three radiation
> models listed under "Longwave radiation exchange within a zone" in
> "Radiation Modes of Thermal Zone" feature of TRNBuild. These models
> are:
>
> 1) Standard model (starnet model)
> 2) Simple model (one node model with combined heat transfer coeff.)
> 3) Detailed model (based on view factors)
>
> The manuals do not refer to these radiation models using the exact
> names listed in TRNBuild; therefore I am feeling difficulty
> understanding which of the three models is actually being discussed.
> Could you please briefly explain the primary differences between the
> calculations of these radiation models? I would also appreciate it
> very much if you could direct me to the specific sections of the
> manual (or to the related papers/thesis) that I should read to learn
> more about each model.
>
> Thanks in advance,
> Best,
> Simge Andolsun
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
>
>
> ----- End of original message -----
>
>
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