This paper investigated the energy performance of an innovative double skin façade integrated semitransparent photovoltaic and optimized the design parameters and the operation mode. The simulation model was built and utilized with Grasshopper plug-in Ladybug and Honeybee. The overall energy performance of the innovative DSF-PV including thermal, day lighting and electricity productive performance was investigated in the numerical model. The result indicates that the optimal dimension of this innovative DSF-PV is 0.5m air gap depth, 3.6m floor height, and 0.45 height of the top and bottom opening. The optimal operation mode pf DSF-PV in Tianjin is natural ventilation in cooling season and No ventilation in heating season, which can save about 20%~23.95% energy consumption. The power generation of the PV façade can achieve about 70KW h per unit area, electricity yearly in Tianjin, that is considerable potential for office building integrated the PV façade on the external skin. Thus, if the optimal operation mode of DSF-PV, the overall energy performance conversion efficiency would be improved.
Keywords Double-skin-facade, BIPV, CIGS, Ventilation façade, Semi-transparent photovoltaic