Coupling the building simulation tool ZAER with a sunspot model. Case study in Tunis.

Highlights: [•] A new model to calculate the sunspot position and area is presented. [•] Obtained results are in good agreement with published data. [•] The developed model is coupled with the building simulation software ZAER. [•] The coupled tool permits the precise calculation of the radiation exchanges. [•] A simulation case study demonstrates the applicability of the proposed tool. [ABSTRACT FROM AUTHOR]