Paper Conference

Proceedings of BSO Conference 2020: Fifth Conference of IBPSA-England


Near-Zero Energy Building Feasibility using Building Integrated Photovoltaics: Case Study with Stochastic Energy Consumption

Fereshteh Poormohammadi, Konstantinos Spiliotis, Johan Driesen

Abstract: Recently, near-zero energy building (NZEB) has been set as one of the sustainable strategies in building sector to mitigate the climate change challenges. In this regard, the technology of building integrated photovoltaic (BIPV) systems is known as the backbone of the NZEB. This work aims to examine the feasibility of the NZEB by means of BIPV systems for a case study across locations with different climate conditions. These locations are Munich, Sevilla, Riyadh, and Naples. Building energy simulation (BES) tools are mostly used to study building energy performance. However, there are discrepancies between simulation results and building energy performance in reality. Occupant behaviour due to its inherently random nature is known as one of the couses for these discrepancies, and it is not reflected by the currently employed schedules in BES tools. This work uses the stochastic occupant behaviour derived using the selected methodologies from the literature to produce the building schedules. Overall annual simulation results show first, the amount of electricity demand with stochastic schedules is on average about 1.5 times lower than the cosumption when the default schedules are considered. Furthermore, regardless of the type of the climate condition, with the derived stochastic electricity demand, which includes all energy demand of the representative office room except for heating, it is not possible to achieve the NZEB target by BIPV: an annual coverage of maximum 55.4% is achieved using about 40% of the south façade covered by 14% efficient BIPV modules with a rated power of 244 Wp and an inverter efficiency of 0.8.
Pages: 301 - 308