Fixed Fiber Light Guide System with Concave Outlet Concentrators

Bangdi Zhou, Kaiyan He, Ziqian Chen and Shuiku Zhong
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Bangdi Zhou: School of Physical Science and Technology, Guangxi University, Nanning 530004, China
Kaiyan He: School of Physical Science and Technology, Guangxi University, Nanning 530004, China
Ziqian Chen: School of Physical Science and Technology, Guangxi University, Nanning 530004, China
Shuiku Zhong: School of Physical Science and Technology, Guangxi University, Nanning 530004, China

Energies, 2022, vol. 15, issue 3, 1-16

Abstract: Because a traditional optical fiber light guiding system includes a tracking device, it also inevitably has a complex structure, high construction and maintenance costs, short life span and low reliability. Although several types have been developed for decades, there are no successful products on the market. The biggest cause of the problem is that all traditional optical fiber light guiding systems must have a tracking device. This paper studies a solar fiber optic guide system without a tracking device, hoping to solve this problem. A fixed fiber light guide system using concave outlet concentrators as its receiving unit is proposed. The structure and working principle of the concave outlet concentrator, the receiving unit and the light guide system are introduced. With optical simulation software and the actual sunlight experimental method, this paper first discusses the conceptual design of the concentrator, then studies the transmission efficiency curve of the receiving unit with different angles of incident light, and finally tests the output illuminance of the whole system in actual sunlight. Field test results show that when the average sunshine intensity is about 800 W/m 2 , the system has an output of nearly 300 lux at 0.4 m in front of the outlet end of the fiber bundle with only 3.11 × 10 − 2 m 2 receiving area. This illumination has been able to meet people’s daily lighting requirements. The results of computer simulation and actual sunlight experiments show that this fixed optical fiber light guide system with non-tracing structure is feasible. The absence of a tracking structure means that all moving parts of the system are completely discarded. This greatly improves the working reliability and operation life of the light guide system, and greatly reduces the maintenance and operating costs.

Keywords: concentrator; light guide; optical fiber solar system; solar daylighting (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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