Jeongyoon Oh

Energy Efficiency in the Building Sector: The Effect of Residential Progressive Electricity Tariffs on the Economic Performance of the Building-Integrated Photovoltaic Blind

The residential progressive electricity tariffs (RPET), which can affect the economic performance of the photovoltaic (PV) system, was recently amended in South Korea. In this regard, this study aimed to analyze the effect of RPET on the economic performance of the building-integrated photovoltaic blind (BIPB). This study was conducted in three steps: (i) development of an estimation model for the techno-economic performance of BIPB, (ii) establishment of representative household types, and (iii) impact analysis of RPET on the economic performance of BIPB. The main findings can be summarized as follows. First, the yearly based mean absolute percentage error of the developed finite element model was determined to be 4.54%. Second, considering RPET, the economic performance of BIPB was analyzed to be higher in the case of the households with a larger amount of electricity consumption. This study can provide decision-makers with intuitive results on the economic performance of BIPB considering RPET.

Establishment of Optimal Control Strategy of Building-Integrated Photovoltaic Blind Slat Angle by Considering Interior Illuminance and Electricity Generation

A building-integrated photovoltaic blind (BIPB), in which blind and PV system is combined to generate energy in the building exterior and reduce the heating and cooling load in building by shading function. This study aimed to establish the optimal control strategy of BIPB slat angle by considering interior illuminance and electricity generation. First, in terms of interior illuminance considering overall light (i.e., daylight and artificial illumination) and electricity generation from BIPB, it was determined that the optimal blind slat angle is 80° at all time. Second, in terms of interior illuminance considering daylight and electricity generation from BIPB, it was determined that the optimal blind slat angle is 10° (9:00), 20° (10:00–11:00, 14:00–15:00) and 30° (12:00–13:00). Based on results of this study, effective use of BIPB can be induced by providing information for optimal blind slat angle to users that are considering BIPB implementation.