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Re: [TRNSYS-users] Floor QABSO value

Dear Mr. Carlos Marfil!
 
The QABSI my be the case due to radiative parts of the heating or internal gains. (Du You have such gains)
The QABSO always get radiation de to the ground reflectance in the weather processor (only when defined as "external")
 
The inside-surface of a building element (Wall) is always part of the zone (airnode) where the surface is listed (Zone-window).
The condition on the outside surface are defined at the boundary condition (defined in the zone window).
The order of the different wall layers with respect to in- and outside-surface You can see in the "wall type manager".
 
I hope this helps!
 
With kind regards,
    Matthias Kersken
 

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Dipl.-Ing. Matthias Kersken
Wissenschaftlicher Mitarbeiter / Abteilung Energiesysteme

Fraunhofer-Institut für Bauphysik
Institutsteil Holzkirchen

Fraunhoferstraße 10
83626 Valley

eMail: Matthias.Kersken@ibp.fraunhofer.de
Telefon 08024 / 643-204
Telefax 08024 / 643-366
www.ibp.fraunhofer.de

Dipl.-Ing. Matthias Kersken
Research Associate / Department Energy Systems

Fraunhofer Institute for Building Physics
Branch Holzkirchen

Fraunhoferstraße 10
D-83626 Valley

eMail: Matthias.Kersken@ibp.fraunhofer.de
Phone +49 8024 / 643-204
Fax +49 8024 / 643-366
www.ibp.fraunhofer.de

 

 

 

 

 

 

 

 

 

 

 

 

 

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Von: Claros Marfil, Luis Jesus [mailto:Centag51@acciona.es]
Gesendet: Mittwoch, 2. März 2011 11:21
An: trnsys-users@cae.wisc.edu
Betreff: [TRNSYS-users] Floor QABSO value

Dear TRNSYS Users,

 

After analyzing QABSI (NTYPE 21) and QABSO (NTYPE 22)  outputs in a Multizone building (TYPE 56), I get similar values for absorbed radiation in the floor and in the different facades. Since I have no windows, I don?t understand why these QABSI and QABSO floor values are so high.

 

I would like to know which is the right way to indicate TRNSYS that a horizontal surface inside a building (interior floor) should not have any solar radiation since there is not any window.

 

I have already indicated a view fac. to sky=0, but I get the same results.

 

Thanks in advance,

 

Luis J. Claros Marfil

 

Centro Tecnológico I+D+i  - R & D Technology Center

ACCIONA Infraestructuras

Valportillo II, nº8
C.P. 28108 Alcobendas (Madrid)
Tel.: +34  91 791 20 20
Fax: +34  91 791 21 01                                                                                         centag51@acciona.es
www.acciona-infraestructuras.es

Q Antes de imprimir este mensaje, asegúrate de que es necesario. Proteger el medio ambiente está también en tu mano.

 

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