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

• Published in: Energy
• Main Author: Abu-Bakar S.H.; Muhammad-Sukki F.; Freier D.; Ramirez-Iniguez R.; Mallick T.K.; Munir A.B.; Mohd Yasin S.H.; Abubakar Mas'ud A.; Bani N.A.
• Format: Article
• Language: English
• Published: Elsevier Ltd 2016
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962374574&doi=10.1016%2fj.energy.2016.01.006&partnerID=40&md5=caabf32737c9d527a903fc3513a33642

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. © 2016 Elsevier Ltd.