An Empirical Study on the Building-Integrated Photovoltaic System

Abstract

As an empirical study for the building-integrated photovoltaic system, the efficiency of several photovoltaic panels with the inclination angle of 17° constructed on the roof of a building was studied. The photovoltaic panels used in this study were crystalline Si, thin-film Si, and thin-film Si modules. The annual average operating time of the panels on the north face was rather low and the annual average operating time of the panels on the south face was rather high. The maximum operating time of the module was obtained at the case of crystalline Si module on the south face (3.5hr), and the annual average operating time of the crystalline Si module on the south face and the north face was 2.99hr. When the module temperature was high (summer season), the operating time of the thin-film module was high. However, when the module temperature was low (winter season), the operating time of the crystalline Si module was high.