Seasonal optimization of a fixed exterior complex fenestration system considering visual comfort and energy performance criteria

In a certain climate, the lighting and thermal performance of a building can be improved if the position of a fixed solar protection system of a complex fenestration system (CFS) is changed according to the period of year. The main objective of this paper is to optimize the lighting and energy performance of a fixed exterior horizontal and curved perforated louver used on a fully glazed façade of an office space located in Santiago (Chile) and Oslo (Norway), considering different slats angles of the CFS, depending of the season of the year. Bi-monthly, quarterly and bi-annual position of the CFS has been evaluated. The highest reduction of the total energy consumption corresponds to the bi-annual and quarterly cases in Santiago with 11.6% with respect to the annual case, and the quarterly case in Oslo with 8.3% with respect of annual case.