[TRNSYS-users] Re : About Shading masks (type 67) and Overhang and wingwalls shading (type 34)

[Fabien Morice]

Thanks Diego.

It's a Type which is very important for a lot of engineering department.
Moreover, I have seen I am not alone to wait it.

I think the solution of Christophe (Enertech) is interesting.
It's similar to a french software called SimSol which have been developped by the C.S.T.B. (distributor of Trnsys in France as you know).
Do you know it ?
This free software is a graphic interface which use Trnsys ! It is used for solar domestic hot water.
In it, you can define shading masks. So, I ask me if it use the Type67. Is it correct ?
Because, if it is right, maybe you can use the programmation code of C.S.T.B.

I give you the link to download it : http://software.cstb.fr/soft/present.asp?langue=fr&m=lpr&context=SimSol&imprimer=&cd=.



----- Message d'origine ----
De : Diego A. Arias <daarias at wisc.edu>
À : Fabien Morice <fabien.morice at yahoo.fr>
Envoyé le : Lundi, 23 Avril 2007, 21h15mn 50s
Objet : Re: Re : About Shading masks (type 67) and Overhang and wingwalls shading (type 34)


Hi Fabien,

I feel really bad that this bug causes so much trouble.  Unfortunately, 
the new component will be ready in a year: it is part of a big effort to 
make weather data reader, radiation, shading,  self-shading  and 
geometric building information into a single component.

However, I will try to come up with a solution for the current strategy 
in the next couple of weeks.  If I understand correctly, Type67 is 
subtracting a fixed value of view factor.  I will keep you posted.
Regards,

Diego

Fabien Morice wrote:
> I suspected it.
>  
> Could you tell me when the new type will be available ?
> I'm very interresting for it.
>  
> Thanks.
>
>
> ----- Message d'origine ----
> De : Diego A. Arias <daarias at wisc.edu>
> À : Fabien Morice <fabien.morice at yahoo.fr>
> Cc : trnsys-users at engr.wisc.edu
> Envoyé le : Jeudi, 19 Avril 2007, 22h07mn 15s
> Objet : Re: [TRNSYS-users] About Shading masks (type 67) and Overhang 
> and wingwalls shading (type 34)
>
> Hi Fabien,
>
> Thanks for looking into the details of this topic.  I am afraid that you
> found a bug. Both components were developed separately over the years,
> and they may not be giving the right results when combined.
> Sorry if this creates inconveniences. We are currently working on
> another solution that will combine both shading sources, overhangs and
> far away objects into a single component.
> Best regards,
>
> Diego
>
> > Can anyone, have a look on my simulation ?
> >
> > I don't understand the results.
> >
> >  
> >
> >  
> > I try to compare 2 types 34 :
> >  - the first is combined with a type 67 (parameter 1 = 1)
> >  - the second is not combined with a type 67 (parameter 1 = 0)
> > See the results.
> > Usually, 0 < FSS < 1 same the second type 67
> > but the first : -1 < FSS < 1 !!!!
> >  
> > In more, I try to compare 3 inputs of type 34 in the 2 cases
> > See the results.
> > With a type 67 but no masks (see the ***.dat) I don't have the same
> > result !!!!
> >  
> > Thanks.


      
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