| Title |
Evaluation on the Photovoltaic Module Arrangement Planning Considering Shading Conditions in Apartment Buildings |
| Authors |
Lee, Keo-Re ; Lee, Yoon-Sun ; Lim, Jae-Han |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.5.169 |
| Keywords |
Apartment building ; Photovoltaic system ; PV Simulation ; Roof plan ; Block layout ; Partial shading |
| Abstract |
During the initial design stage of apartment complex, the photovoltaic(PV) system has been considered as an alternative of renewable energy
system and planned to install at the rooftop floor level in general. The electric power generation characteristics can be influenced by the
block layout, building orientation and roof top structure because of azimuth angle, tilt angle, and partial shading. This study aims to
investigate power generation characteristics of photovoltaic system in apartment buildings by considering the partial shading conditions due to
the block layout, building orientation and roof-top structures. For the photovoltaic module arrangement planning in rooftop floor level, shading
areas were firstly analyzed due to the adjacent building structure. And the annual and seasonal power generation of PV system were analyzed
through the PVsyst simulation results. The results show that shading period at the roof top surface can be increased due to the parapet and
water tank. Initial design power capacity can be decreased by considering the daily insolation period and distance between PV modules
through the shading simulation. As the number of PV modules decreases, the annual power generation can be decreased. However annual
power generation per unit area of PV modules can be increased and performance ratio can be increased above 80%. Also the power
generation of PV system can be critically affected by building orientation and the performance ratio can be drastically decreased in
east-oriented buildings due to the shading problems caused by adjacent structures at roof top level such as parapet and water tank. |