[TRNSYS-users] Solar azimuth angle in the south hemisphere

["Heloise PELEN" <heloise.pelen@etamine.coop>]

Dear TRNSYS users,

 

We have a project in the south hemisphere but we are more used to model projects in the north hemisphere.

I have a question about which Azimuth Angle I should take to model the building’s orientations.

 

The Type 109 description read as follow : “The solar azimuth angle is the angle between the local meridian and the projection of the line of sight of the sun onto the horizontal plane. 0  = Facing equator, 90 = Facing west, 180 = Facing north, 270 = Facing east. Refer to the manual for details on the azimuth parameter for tracking surfaces.”

 

In our case, “facing equator” is north, so should the solar azimuth angle be 0 ?

 

We think we should take the following :

North = 0

South = 180

West = 90

East = -90 or 270

 

Could you confirm this or correct me if I am wrong ?

 

Thanks very much !

 

Regards,

Héloïse Pelen

ETAMINE

heloise.pelen@etamine.coop 75 rue de la Villette - 69003 Lyon Std : 04 37 45 34 20 / Fax : 04 37 45 41 38 Ld : 04 37 45 34 13 / Port : 06 65 07 41 77

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