Re: Direct solar radiation Type 56

[Michaël Kummert <kummert@xxxxxxxxxxxxx>]

Dear Christian,
If you are using TRNSYS 15, Type 56 allows you to model internal 
windows. You can also use the "GEOSURF" feature to control the 
distribution of incoming direct solar radiation. For instance, if you 
have a double façade building and the "inner skin" of the façade is 
fully glazed, you would typically set GEOSURF to 1 for the internal window.
Please note that if you use very special windows you may have to tweak 
the transmittance of the internal window to obtain meaningful results 
(for instance, assume that a window has a transmittance of 1 in one part 
of the radiation spectrum and 0 in the other part, resulting in an 
overall transmission of 0.6. If you put 2 windows in series, the 
transmittance modeled by Type56 will be 0.6*0.6=0.36, while the "real" 
transmittance is 0.6 - you cannot filter the same part of the spectrum 
twice!).

Regards,

Michaël Kummert

sim@energiebuero-berlin.de wrote:


> Dear TRNSYS-Users,
> I want to model a house, where a part of the incoming direct solar 
> radiation is absorbed by a wall and another part of this direct 
> radiation "flows" into the next (adjacent) zone and is absorbed 
> there. Is it possible to let solar direct radiation stream through one 
> zone into another?
> Thanks for help!
> Christian Stolte
>
>
>
>
>
> energiebüro
> Adalbertstr. 7-8
> 10999 Berlin
> t: 030-68056011
> f: 030-68056013
> www.energiebuero-berlin.de
>
>
>  
--
_________________________________________________

Michaël Kummert

Solar Energy Laboratory - University of Wisconsin-Madison
1303 Engr Res Bldg, 1500 Engineering Drive
Madison, WI 53706

Tel: +1 (608) 263-1589
Fax: +1 (608) 262-8464
E-mail: kummert@engr.wisc.edu

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