Thermal Performance of Double Skin Façade with Buoyancy-Driven Airflow

This talk reviews the main parameters for double skin façade (DSF) design. It introduces an integrated and iterative modeling process for analyzing the thermal performance of DSF cavities with buoyancy-driven airflow by using an energy simulation program (BESP) with a CFD package. The model and the modeling process were calibrated and validated against the experiment. Correlations were developed that can be implemented in a BESP, allowing to keep the accuracy gained from CFD without the computation time. The correlations are valuable for “back of the envelope” calculation and for examining accuracy of zonal-model-based energy and airflow simulation programs.