Effect of diffuse radiation on the performance of a rotationally asymmetrical optical concentrator

• Published in: 2016 IEEE 6th International Conference on Photonics, ICP 2016
• Main Author: Freier D.; Muhammad-Sukki F.; Abu-Bakar S.H.; Ramirez-Iniguez R.; Munir A.B.; Yasin S.H.M.; Mas'ud A.A.; Bani N.A.
• Format: Conference paper
• Language: English
• Published: Institute of Electrical and Electronics Engineers Inc. 2016
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981736666&doi=10.1109%2fICP.2016.7510017&partnerID=40&md5=d17d985ebdd637a58a047b7624dee072
• DOI: 10.1109/ICP.2016.7510017

This paper evaluates the performance of a recently patented rotationally asymmetrical dielectric totally internally reflective concentrator (RADTIRC) under diffuse radiation. The RADTIRC has a geometrical concentration gain of 4.969 and two half acceptance angles of ± 30° and ± 40° along the x-axis and z-axis respectively. Simulation and experimental work have been carried out to determine the optical concentration gain under diffuse radiation. It was found that the RADTIRC has an optical concentration gain of 1.94 under diffuse irradiance. The experimental results for the single concentrator showed an optoelectronic gain of 2.13, giving a difference of 9.8% due to factors such as the presence of direct radiation during experiments, the increase in diffuse radiation due to the reflection from surrounded buildings as well as from the ground reflection. © 2016 IEEE.