A solar concentrator with two reflection mirrors designed by using a ray tracing method

Chen, Chi Feng; Lin, Chih Hao; Jan, Huang Tzung

doi:10.1016/j.ijleo.2008.12.010

Cited by 31 publications

(12 citation statements)

References 13 publications

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“…51. Hyperboloid reflectors are often used as secondary concentrators [107], stationary low concentrators [106], or in beam-down central receiver systems [108]. A linear Fresnel reflector (LFR) is similar to a parabolic trough in that they both have linear foci and one-axis tracking requirements.…”

Section: Reflection Opticsmentioning

confidence: 99%

Concentrated photovoltaic thermal (CPVT) solar collector systems: Part I – Fundamentals, design considerations and current technologies

Sharaf

Orhan

2015

Renewable and Sustainable Energy Reviews

182

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Section: Reflection Opticsmentioning

confidence: 99%

Concentrated photovoltaic thermal (CPVT) solar collector systems: Part I – Fundamentals, design considerations and current technologies

Sharaf

Orhan

2015

Renewable and Sustainable Energy Reviews

182

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“…Many researches have conducted simulations on the best shape for secondary concentrators that would ensure the best utilization of the reflected beam within it [20], and from the literature review, two geometries for the secondary concentrator were singled out, namely the simple circular hyperboloid and the elliptical cone according to simulation work carried out by Ali and Reddy [19]. The authors compared the optical efficiency of the circular cone (24%), circular hyperboloid (32%), elliptical hyperboloid (27%), and the elliptical cone (30%).…”

Section: Secondary Concentrator Designmentioning

confidence: 99%

Experimental investigation on paraboloid solar concentrator with a conical secondary concentrator

Alami

2014

Int. J. Energy Res.

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SUMMARYMaterial removal through ablation caused by concentrated solar thermal power is investigated. Experiments are conducted using a mirror-finish electroplated paraboloid along with a conical secondary concentrator in both fall and summer months in Al Ain city, UAE. Data collection for melting of aluminum shims facilitated the assessment of the feasibility of utilizing the available solar irradiance after the two-stage concentration. A geometric concentration factor of over 2800 is achieved for the first stage of power concentration with the current installation that also has a two-axis sun tracking system and a built-in pyrheliometer. The results confirm the feasibility of the approach, as the available power for ablation around solar noon is order of magnitudes higher than the power needed for the task, for the aluminum shim used. The main aim of the study is to hone the process to the power and precision of continuous pulse laser material removal, notably CO 2 lasers, as challenges further reduction of the concentrated solar beams to acceptable tolerances remain to be successfully resolved.

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“…ASAP is based on the principle of the Monte Carlo and its reliability has been verified [13] [14] [15].…”

Section: Simulationmentioning

confidence: 99%

Characteristics of a Novel Solar Dish System

Zhang

Luo

Xiao

et al. 2012

2012 Spring Congress on Engineering and Technology

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The advantages and disadvantages of the current solar thermal power systems are discussed and a novel solar dish system is proposed. A secondary reflector is used to make the concentrated solar beams on the ground instead of on the top of the basic dish. It is convenient to arrange the Stirling engine and heat storage. This design is verified by ASAP software, and the results show that the focal plane moves from designed -350 mm to -320 mm and the average heat flux on the absorber is about 1880 suns and the optical efficiency of the system is about 77.5%.

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A solar concentrator with two reflection mirrors designed by using a ray tracing method

Cited by 31 publications

References 13 publications

Concentrated photovoltaic thermal (CPVT) solar collector systems: Part I – Fundamentals, design considerations and current technologies

Concentrated photovoltaic thermal (CPVT) solar collector systems: Part I – Fundamentals, design considerations and current technologies

Experimental investigation on paraboloid solar concentrator with a conical secondary concentrator

Characteristics of a Novel Solar Dish System

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