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

[Enertech]

Hi Diego and all TRNSYS Users,

Diego, I agree with you : for my job, the topic of shading is a central 
problem and we absolutly need a simple model to treat them. We will be very 
thankful if you develop this kind of tool.

I have a suggestion about this topic. In attached file, you can see a solar 
diagram corresponding to a 45°N latitude. It will be useful to have a model 
with a graphic plugin, a solar diagram corresponding to a x°N or S (x = 
parameter), and the user define graphically shadings. In this manner, you 
can define all the shadings of a surface, fareway masks, wingwalls and 
overhang and also some kinds of masks wich are not fareway (sun is shadded 
if its angular height is less than the angular height of the mask) and not 
overhangs (sun is shadded if its angular height is higher than the angular 
height of the mask), as alleyways for example.

Do you think it’s possible to develop this kind of model ?

Best regards,
Christophe

At 22:07 19/04/2007, Diego A. Arias wrote:
>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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>
>
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===========================
ENERTECH
F-26160 FELINES SUR RIMANDOULE
tel-fax : 04 75 90 18 54
Email : sidler at club-internet.fr
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