[TRNSYS-users] Trnsys 3D solar radiation in southern hemisphere

[Antoine Gautier]

Thanks a lot for your answers Christoph.

My mistake! The latitude of the site in my case was close to the tropic and
no radiation on north façade in January is actually normal over there


Sorry for the inconvenience.

 

Best

--

Antoine Gautier

Solamen

+33 6 58 24 02 60

antoine.gautier at solamen.fr

 

De : hotline [mailto:hotline at Transsolar.com] 
Envoyé : lundi 2 juillet 2018 16:31
À : TRNSYS users mailing list at OneBuilding.org
<trnsys-users at lists.onebuilding.org>
Objet : Re: [TRNSYS-users] Trnsys 3D solar radiation in southern hemisphere

 

Hi Antoine,

 

I couldn’t reproduce your problem. I used the tm2 weather file for cape town
and I have got radiation on the north façade while there was no radiation on
south.

Yes, that is right, external shading geometry doesn't impact solar incident
radiation on external walls, only on external windows.

 

Best,

Christoph

 

Von: TRNSYS-users [mailto:trnsys-users-bounces at lists.onebuilding.org] Im
Auftrag von Antoine Gautier via TRNSYS-users
Gesendet: Montag, 2. Juli 2018 12:46
An: trnsys-users at lists.onebuilding.org
<mailto:trnsys-users at lists.onebuilding.org> 
Cc: Antoine Gautier <antoine.gautier at solamen.fr
<mailto:antoine.gautier at solamen.fr> >
Betreff: [TRNSYS-users] Trnsys 3D solar radiation in southern hemisphere

 

Hi

 

There seems to be a problem with solar radiation computation in southern
hemisphere when using the 3D import wizard: see attachment.

South facade (azimuth = 180°) actually receives radiation whereas north
facade (azimuth = 0°) does not.

 

Also external shading geometry doesn't seem to impact solar incident
radiation on external walls, only on external windows. Is that correct?

 

Thanks for your help

--

Antoine Gautier

Solamen

+33 6 58 24 02 60

antoine.gautier at solamen.fr <mailto:antoine.gautier at solamen.fr> 

 

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