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The design, construction and experimental characterization of a novel concentrating photovoltaic/daylighting window for green building roof

Xuan, Qingdong; Li, Guiqiang; Lu, Yashun; Zhao, Bin; Zhao, Xudong; Pei, Gang

Authors

Qingdong Xuan

Yashun Lu

Bin Zhao

Gang Pei



Abstract

A novel concentrating photovoltaic/daylighting window to achieve the multi-function of the electricity generation and daylighting for buildings has been designed, constructed and experimentally characterized. It’s found that the concentrating photovoltaic/daylighting window can achieve a transmittance of around 10% for the natural daylight without decreasing the optical efficiency of the concentrator. The overall daylighting and electrical performance of the concentrating photovoltaic/daylighting window are investigated under the real weather condition.
The hourly illuminance level, the temperature of the inner environment of the box and transient I–V curves are determined. The short-circuit current, open-circuit voltage maximum power generation, and Fill Factor of the system are derived from each
individual I–V curve. Through the experiment testing, the illuminance level in the integrating box is in the range of 923-9230 lx with the outside illuminance level exceeds 100000 lx during noon time, which prove that the concentrating photovoltaic/daylighting window can improve the visual comfort for the building interior environment and it can also avoid the building interior environment from overheating and dazzling at noon which is caused by direct sunlight through
transparent window. The preliminary economic analysis of the new concentrating photovoltaic/daylighting window is also made.

Journal Article Type Article
Publication Date May 15, 2019
Journal Energy
Print ISSN 0360-5442
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 175
Pages 1138-1152
APA6 Citation Xuan, Q., Li, G., Lu, Y., Zhao, B., Zhao, X., & Pei, G. (2019). The design, construction and experimental characterization of a novel concentrating photovoltaic/daylighting window for green building roof. Energy, 175, 1138-1152. https://doi.org/10.1016/j.energy.2019.03.135
DOI https://doi.org/10.1016/j.energy.2019.03.135
Keywords concentrating photovoltaic/daylighting window; outdoor experiment; illumination; daylighting performance; electrical performance
Publisher URL https://www.sciencedirect.com/search?pub=Energy&show=25&sortBy=relevance&origin=jrnl_home&zone=search&cid=271090

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