Advanced day lighting system using fiber optics

Kavitha, T.; Pappa, C. Kanmani; Shobana, R.; Raj, A. Albert; Ahilan, A.; Veerasamy, B.; Gnanamalar, A. Jasmine

doi:10.1007/s11082-023-04608-z

Cited by 3 publications

(2 citation statements)

References 30 publications

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“…As a result, most commercial daylighting systems use convex lenses as concentrators due to their reasonable cost and satisfactory concentration capacity. When compared to other parabolic reflector methods, the convex lens reduced the shadow on the fiber bundle and increased the illuminance value [99].…”

Section: Primary Concentratormentioning

confidence: 99%

Analysis and Comparison of Daylighting Technologies: Light Pipe, Optical Fiber, and Heliostat

2023

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This article analyzes and compares three daylighting technologies: light pipes, optical fibers, and heliostats. This work aims to evaluate their efficiency, sustainability, and cost-effectiveness in providing natural light to indoor spaces. The analysis includes a review of the principles behind each technology, the design and development of the prototypes and experiments carried out by our research team, their advantages and disadvantages, and their applications in different settings. The comparison is based on several criteria, such as installation, cost, efficiency, output spectrum, and hybrid system. The results indicate that each technology has its unique features and is suited to specific applications. Light pipes are effective for short distances, and they can be easily integrated into existing buildings. Optical fibers are suitable for long distances and offer flexibility in design, but they require more maintenance. Heliostats are ideal for large spaces, but they are expensive to install and operate. Overall, this study provides valuable insight into the strengths and weaknesses of three daylighting technologies and helps designers and architects make informed decisions when selecting the most appropriate solution for future work.

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Section: Primary Concentratormentioning

confidence: 99%

Analysis and Comparison of Daylighting Technologies: Light Pipe, Optical Fiber, and Heliostat

2023

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“…An alternative approach involves the utilization of optical fibers to capture solar radiation and transmit it to a processing module located away from the tracking system. This light collection technique is commonly employed in daylighting control systems.This approach is explored in the literature mainly as an alternative to reduce the lighting load, improving the efficiency of artificial lighting [ 19 ]. These systems can use plastic/silica fibers and use different light collection systems [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

A Proposal for a Solar Position Sensor System with Multifiber Optical Cable

Oliveira,

Cruz,

Barbosa

et al. 2024

Sensors

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A solar position sensor is an essential optoelectronic device used to monitor the sun’s position in solar tracking systems. In closed-loop systems, this sensor is responsible for providing feedback signals to the control system, allowing motor adjustments to optimize the angle of incidence and minimize positioning errors. The accuracy required for solar tracking systems varies depending on the specific photovoltaic concentration. In the case of the concentrator photovoltaic (CPV), it is normally essential to track the sun with a position error of less than ±0.6°. To achieve such precision, a proposed sensor configuration composed of low-cost embedded electronics and multifiber optical cable is subjected to characterization through a series of measurements covering range, sensitivity, and resolution. These measurements are performed in controlled indoor environments as well as outdoor conditions. The results obtained exhibit a resolution of 2.6×10−3 degrees when the sensor is illuminated within its designated field of view of ±0.1°, particularly in external conditions. Considering the performance demonstrated by the proposed solar position sensor, coupled with its straightforward modeling and assembly compared to position sensors documented in the literature, it emerges as a promising candidate for integration into solar tracking systems.

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Concentration performance evaluation of sunlight concentrators: Fresnel lens, plano-convex lens, and parabolic mirrors for daylighting application

Song,

Dessie

2024

International Journal of Green Energy

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Advanced day lighting system using fiber optics

Cited by 3 publications

References 30 publications

Analysis and Comparison of Daylighting Technologies: Light Pipe, Optical Fiber, and Heliostat

Analysis and Comparison of Daylighting Technologies: Light Pipe, Optical Fiber, and Heliostat

A Proposal for a Solar Position Sensor System with Multifiber Optical Cable

Concentration performance evaluation of sunlight concentrators: Fresnel lens, plano-convex lens, and parabolic mirrors for daylighting application

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