Re: overhang

[Michaël Kummert <kummert@xxxxxxxxxxxxx>]

Dear  Herr von Grabe,
You are right, you can define one orientation per shaded window/wall and 
use outputs 1 and 2 of Type 34. This was the first proposed solution in 
the thread I mentioned:
http://sel.me.wisc.edu/trnsys/mailinglist/archive2003/msg00007.html
It is the most rigorous method and, as you mention it,  "ESHADE" is 
still available for a possible additional external shading device.
Using "ESHADE" to take an overhang/wingwall into account is a just a 
little easier and usually gives good results.

Regards,

Michaël Kummert


Herr von Grabe wrote:


> Hi everybody,
>
> one more question about the below field: Is there a need to connect type 34 and the Eshade of type 56? Isn't it sufficient to use the output of type 34 as input for type 56 (total and beam radiation for the direction)? Then I have to define one direction for each window but it leaves the eshade for a shading device.
>
>
> Regards,
> Joern
>
> -----Ursprüngliche Nachricht-----
> Von: Michaël Kummert [mailto:kummert@engr.wisc.edu]
> Gesendet: Freitag, 18. Juli 2003 17:44
> An: trnsys@relay.doit.wisc.edu
> Betreff: Re: overhang
>
>
> Dear Isabelle,
>
> just a short addition to Helmi's answer: since the TRNSYS 15.3.00 
> release, Type34 includes a new output which you can directly connect to 
> Type 56.It is output 11, "fraction of solar shading". You can take a 
> look at a previous discussion for more details:
> http://sel.me.wisc.edu/trnsys/mailinglist/archive2003/msg00007.html
> (keeping in mind that you don't need the equation anymore if you are 
> using TRNSYS 15.3.00)
>
> Regards,
> Michaël
>
> helmi wrote:
>
>  
>
> > Hello
> >
> > yes you can couple the type 34 with the type 56, via the prebid software.
> >
> > In fact, when you are describing a window in prebid you can specify an 
> > external shading device, which means in your case, an overhang. Then 
> > the shading factor will be an input to prebid, which is 1-shading 
> > factor of the type 34.
> >
> > You must use as many type 34 as windows-orientations.
> >
> > If you want I can send you a Trnsys file where I used overhangs.
> >
> > Best regards
> >
> >
> > Ing. Helmi Ben Rejeb
> > Ecole Nationale d'Ingénieurs de Tunis, BP 37, Le belvédère, 1002 
> > Tunis, Tunisia.
> >
> >
> > ------------------------------------------------------------------------
> > Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français !
> > Testez le nouveau Yahoo! Mail <http://fr.mail.yahoo.com> 
> >    
>
>  
--
_________________________________________________

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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