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Performance analysis of a solar window incorporating a novel rotationally asymmetrical concentrator.

Abu-Bakar, Siti Hawa; Muhammad-Sukki, Firdaus; Freier, Daria; Ramirez-Iniguez, Roberto; Mallick, Tapas Kumar; Munir, Abu Bakar; Yasin, Siti Hajar Mohd; Mas'ud, Abdullahi Abubakar; Bani, Nurul Aini


Siti Hawa Abu-Bakar

Firdaus Muhammad-Sukki

Daria Freier

Roberto Ramirez-Iniguez

Tapas Kumar Mallick

Abu Bakar Munir

Siti Hajar Mohd Yasin

Abdullahi Abubakar Mas'ud

Nurul Aini Bani


The race towards achieving a sustainable zero carbon building has spurred the introduction of many new technologies, including the BIPV (building integrated photovoltaic) system. To tackle the high capital cost of BIPV systems, LCPV (low-concentration photovoltaic) technology was developed. Besides the reduction of cost, the LCPV technology also produces clean energy for the building and promotes innovative architectural design. This paper presents a novel type of concentrator for BIPV systems. This concentrator, known as the RADTIRC (rotationally asymmetrical dielectric totally internally reflecting concentrator), was incorporated in a small double glazing window. The RADTIRC has a geometrical concentration ratio of 4.9069x. A series of experiments were carried out to evaluate the performance of the solar PV window both indoors and outdoors. It was found that the RADTIRC-PV window increases the short circuit current by 4.13x when compared with a non-concentrating solar PV window. In terms of maximum power generation, the RADTIRC-PV window generates 0.749 W at normal incidence, 4.8x higher than the non-concentrating counterpart.

Journal Article Type Article
Publication Date Mar 15, 2016
Journal Energy
Print ISSN 0360-5442
Electronic ISSN 1873-6785
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 99
Pages 181-192
Institution Citation ABU-BAKAR, S.H., MUHAMMAD-SUKKI, F., FREIER, D., RAMIREZ-INIGUEZ, R., MALLICK, T.K., MUNIR, A.B., YASIN, S.H. M., MAS'UD, A.A. and BANI, N.A. 2016. Performance analysis of a solar window incorporating a novel rotationally asymmetrical concentrator. Energy [online], 99, pages 181-192. Available from:
Keywords Solar photovoltaic; Solar concentrator; Rotationally asymmetrical concentrator; Building integrated photovoltaic system


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