[TRNSYS-users] :-(( Re: Shading masks

[Adrien JEZEQUEL]

Dear David,

Thanks a lot for your answer and your explanation which were really 
helpful to adapt the *.msk file.

But I encounter another problem concerning beam radiation on facing East 
: warning messages appear and block the simulation running (when the 
maximum number of warnings allowed exceeds of course). I am not sure 
that increasing the maximum of allowed warnings is the right way. So I 
am searching some way to fix these warnings but without success.

The warning message is written below. It concerns beam radiation on East 
surface orientation with Type 56:
    /"Beam radiation greater than 0 occured for an incident angle of 
100.48 greater then 90° for orientation 11. Beam radiation has been set 
to 0."/
This message appears for every surface which have east orientation at 
different time step.

If anyone have an idea concerning that problem, he's welcome.

Thanks in advance for your answers.

King regards, Adrien

David Bradley a écrit :
> Adrien,
>   The first column in the *.msk file is the angle formed between the 
> horizontal and an imaginary line drawn between the center point of the 
> shaded surface and the top of the obstruction. If you enter an angle 
> of 0° that means that the obstruction has a height of 0 in that 
> direction and that the surface would be unshaded from sunlight coming 
> from that direction. If you enter a value of 90° that means that the 
> obstruction has an infinite height in that direction and that the 
> surface would always be shaded from sunlight coming from that 
> direction. 0° = no shading, 90° = complete shading (for that surface 
> angle direction)
> Cheers,
>  David
>
>
> At 11:17 7/12/2007, Adrien JEZEQUEL wrote:
>> Dear TRNSYS users,
>>
>> I'd like to model shading masks, caused by neighbour buildings. To do
>> that, I am using Type 68 with "mask file". I understand how to use it
>> and to connect it to others components. But I am not sure to really
>> understand how the first column of the file is taken into account by
>> TRNSYS.
>>
>> If I put an angle between 0 and 90 °, it means that there is a solar
>> shading isn't it? But if I write 0 or 90°, what does it mean? How these
>> values are interpreted by the component : Total shading? No Shading?
>>
>>
>> Thanks in advance for your help.
>>
>> Best regards,
>>
>> Adrien
>>
>> -- 
>>
>> ***************************************************************
>> Adrien JEZEQUEL
>> Ingénieur en Simulations Dynamiques
>> ITF (Ingénierie Tous Fluides)
>> 87, route de Chambéry
>> 73230 ST ALBAN EN LEYSSE
>> FRANCE
>> Tel: 04.79.75.00.29
>> Website: www.itf.biz
>> Mail : a.jezequel at itf.biz
>>
>>
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>
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-- 

***************************************************************
Adrien JEZEQUEL	
Ingénieur en Simulations Dynamiques
ITF (Ingénierie Tous Fluides)
87, route de Chambéry
73230 ST ALBAN EN LEYSSE
FRANCE
Tel: 04.79.75.00.29
Website: www.itf.biz
Mail : a.jezequel at itf.biz