Setting up and validating a complex model for a simple homogeneous wall.

Highlights: [•] Grey-box models are set up and statistically validated. [•] A method for estimating important thermal parameters of a wall is presented. [•] Testing time is reduced significantly compared to average methods. [•] It is seen as wind velocity influences the heat transfer of this wall significantly. [•] The surface temperature can be described with the models. [ABSTRACT FROM AUTHOR]