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Power Generation Performance of Building-Integrated Photovoltaic Systems in a Zero Energy Building

1
National Institute of Environmental Research, Incheon 22689, Korea
2
Solar Thermal Convergence Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea
3
Research and Development Office, TES Eng, Daejeon 35245, Korea
*
Author to whom correspondence should be addressed.
Energies 2019, 12(13), 2471; https://doi.org/10.3390/en12132471
Received: 9 May 2019 / Revised: 17 June 2019 / Accepted: 24 June 2019 / Published: 26 June 2019
In this study, the long-term operational performance of building-integrated photovoltaic (BIPV) systems was analyzed in the Carbon Zero Building of the National Institute of Environmental Research (NIER) of South Korea, with a total area of 2449 m2. Three types of BIPV modules (glass to glass, glass to Tedlar/crystal, and amorphous) were installed in the building envelopes (roofs, walls, windows, atrium, and pergola) with a total capacity of 116.2 kWp. Over a five-year period, the average annual energy production was 855.6 kWh/kWp, the system loss ranged from 0.14 to 0.31 h/d, and the capture loss ranged from 0.21 to 1.81 h/d. The causes of capture losses were degradation of the power generation efficiency of the horizontal installation module due to the accumulation of dust and reduced energy production due to application of the same inverter for the crystal system module and amorphous module. As a result, the BIPV systems with an installation angle of 30° exhibited approximately 57% higher energy production than vertically (90°) installed systems under the same solar radiation. Moreover, horizontal (0°) BIPV systems exhibited up to 14% higher energy production than vertical BIPV systems. View Full-Text
Keywords: Building-Integrated Photovoltaic Systems; Renewable Energy; Carbon Zero Building; energy generation; South Korea Building-Integrated Photovoltaic Systems; Renewable Energy; Carbon Zero Building; energy generation; South Korea
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Choi, W.J.; Joo, H.J.; Park, J.-W.; Kim, S.-K.; Lee, J.-B. Power Generation Performance of Building-Integrated Photovoltaic Systems in a Zero Energy Building. Energies 2019, 12, 2471.

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