Optical design of two-axes parabolic trough collector and two-section Fresnel lens for line-to-spot solar concentration

Ramírez, Carlos; León, Noel; García, Héctor; Aguayo, Humberto

doi:10.1364/oe.23.00a480

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…Secondary optics coupled with two-axis tracking design concepts would be less penalized by multiple reflections, while reflective materials would be spectrally more efficient than refractive materials for secondary optics concentrators. Modular refractive point-focusing secondary optics may be a relevant design trade-off for line-to-spot conversion [87], allowing line focusing systems, (LFR_2, LFL_2) to concentrate solar radiation on square active areas.…”

Section: Secondary Opticsmentioning

confidence: 99%

Selection of Solar Concentrator Design Concepts for Planar Photoelectrochemical Water Splitting Devices

Caron¹,

Röger²,

Wullenkord

2020

Energies

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Photoelectrochemical water splitting is a promising pathway for solar-driven hydrogen production with a low environmental footprint. The utilization of solar concentrators to supply such water splitting devices with concentrated solar irradiation offers great potential to enhance the economic viability of water splitting at “sunny” site locations. In this work, we defined a set of functional requirements for solar concentrators to assess their suitability to power such water splitting devices, taking into account concentrator optical performance, device coupling efficiency, perceived system complexity, as well as technological costs and risks. We identified, classified and compared a broad range of existing solar concentrator design concepts. Our geometrical analysis, performed on a yearly basis with a one-minute time step, shows that two-axis tracking concentrators with water splitting devices positioned parallel to the optical aperture plane exhibit the highest potential, given the initial conditions applied for the device tilt constraints. Demanding an angle of at least 20° between horizontal and the front side of the water splitting device, allows the device to be operational for 97% of the daylight time in Seville, Spain. The relative loss with respect to the available direct normal irradiance is estimated to 6%. Results moderately depend on the location of application, but generally confirm that the consideration of tilt angle constraints is essential for a comprehensive performance assessment of photoelectrochemical water splitting driven by concentrated sunlight.

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Section: Secondary Opticsmentioning

confidence: 99%

Selection of Solar Concentrator Design Concepts for Planar Photoelectrochemical Water Splitting Devices

Caron¹,

Röger²,

Wullenkord

2020

Energies

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“…Different collection techniques were applied. Using parabolic trough [5], ring array concentrator [6] and Fresnel lenses in different geometries [5,[7][8][9][10] are examples of the techniques used. The solar concentration in Ref [9] was performed using a parabolic off-axis mirror to focus the solar radiation onto one of the faces of the fiber optic where the lasing medium is located.…”

Section: Journal Of Modern Trends In Physics Researchmentioning

confidence: 99%

Design and Evaluation of Flat Solar Concentrator

Nadi¹,

Omar²,

Fikry³

2019

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Flat solar concentrators are designed to focus solar radiation in a linear shape. The concentrator is designed to be the primary step in a sequence of steps that eventually generate solar laser. The focused beam from the concentrator output is used to optically pump a lasing medium (iodine medium) which is compressed in a one meter long and 8 mm diameter quartz tube. The design used here is formed of two flat mirrors with the availability of changing the angel between them. The two mirrors are displaced to create a gap between the two mirrors at the line of their intersection. This research was dedicated to focus down the highest intensity of solar radiation so that the optimal operating conditions of the concentrator are achieved. Multiple parameters were changed, and their effects were simulated theoretically. The highest solar photon concentration was established at the bottom line connecting the two mirrors. In this respect, a movable semiconductor spectrometer was applied to study both the focused radiation spectrum and intensity.

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“…They work effectively in off-grid and decentralized environments. On the other hand, PTC systems are excellent at producing solar power on a big scale by effectively absorbing sunlight and turning it into energy [25,26]. Kasaeian et al (2018) [27] conducted an in-depth analysis of trough and Fresnel-based solar thermal systems and presented their findings.…”

Section: Introductionmentioning

confidence: 99%

Advancements in Fresnel Lens Technology across Diverse Solar Energy Applications: A Comprehensive Review

Rashid,

Al-Obaidi,

Mahdi

et al. 2024

Energies

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Concentration of solar energy may be obtained by reflection, refraction, or a combination of the two. The collectors of a reflection system are designed to concentrate the sun’s rays onto a photovoltaic cell or steam tube. Refractive lenses concentrate light by having it travel through the lens. The sun’s rays are partially reflected and then refracted via a hybrid technique. Hybrid focus techniques have the potential to maximize power output. Fresnel lenses are an efficient tool for concentrating solar energy, which may then be used in a variety of applications. Development of both imaging and non-imaging devices is occurring at this time. Larger acceptance angles, better concentration ratios with less volume and shorter focal length, greater optical efficiency, etc., are only some of the advantages of non-imaging systems over imaging ones. This study encompasses numerical, experimental, and numerical and experimental studies on the use of Fresnel lenses in various solar energy systems to present a comprehensive picture of current scientific achievements in this field. The framework, design criteria, progress, and difficulties are all dissected in detail. Accordingly, some recommendations for further studies are suggested.

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Optical design of two-axes parabolic trough collector and two-section Fresnel lens for line-to-spot solar concentration

Cited by 4 publications

References 6 publications

Selection of Solar Concentrator Design Concepts for Planar Photoelectrochemical Water Splitting Devices

Selection of Solar Concentrator Design Concepts for Planar Photoelectrochemical Water Splitting Devices

Design and Evaluation of Flat Solar Concentrator

Advancements in Fresnel Lens Technology across Diverse Solar Energy Applications: A Comprehensive Review

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