Tailored non-imaging secondary reflectors designed for solar concentration systems

Cheng, Qiang; Chai, Jiale; Zheng, Zengwei; Song, Jinlin; Su, Yang

doi:10.1016/j.solener.2014.09.013

Cited by 23 publications

(11 citation statements)

References 12 publications

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“…In this research, the ray tracing method on dual parabolic dish system was developed [11] to find the robotic arm position and CPC on real-time. The principal of Snell Law used to calculate the ray tracing where the incoming angle and reflected angle have the same value [7], [19]. The ray tracing method utilized on the concentrator solar and optic to get the ray distribution on the absorber's surface [5], [9,10].…”

Section: Ray Tracing Methodsmentioning

confidence: 99%

“…CSP technology for high concentration using two-stage parabola dish concentrators was modelled on some research for instance, the concave shape utilization eliminated the dark areas on the receiver [6,7], 500× geometrical concentration improvement [8], the thermal efficiency increased to 68.6% [9], and have high optical efficiency of 80-82% [10,11]. Several models of two-stage parabolic dish concentrator were only able to be used on small to medium receiver e.g., High Concentrator Photovoltaic (HCPV) and Stirling Engine.…”

Section: Introductionmentioning

confidence: 99%

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Optimal Control of Robotic Arm System to Improve Flux Distribution on Dual Parabola Dish Concentrator

Wardhana¹,

Ashari²,

Suryoatmojo³

2020

IJIES

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To concentrate the rays to the focal point and stabilize the temperature on the receiver were one of the complex works of the two-stage solar concentrator. This paper offers a new method of Fuzzy cascade controller system based on tuning up the optimization at Genetic Algorithm-simple additive weighting (GA-SAW) on the dual parabolic dish concentrator with Compound Parabolic Concentrator. The model and computation of three degrees of freedom robotic arm movement with the ray tracing method were used as the concentrator position predictor. In this research, the acquired fuzzy controller result had an average settling time 0.497 sec, and average rise time 0.277 sec faster than a conventional PID controller. This research was able to overcome the disturbance which was diffused rays, so there was a better output with the power and heat flux increased up to 62.49%. The monte carlo ray tracing method from Tonatiuh Software was used to investigate and movement validation of the dual parabola concentrator by showed the flux distribution on the receiver's absorber. In the last stage, an experiment with a prototype had been conducted as a response verification of the controller system which produce a receiver temperature output as high as 121ºC. The final result showed that the controller system managed to optimize the temperature on the receiver's absorber and generate a stable thermoelectric output with power of 1.01 Watt.

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Section: Ray Tracing Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal Control of Robotic Arm System to Improve Flux Distribution on Dual Parabola Dish Concentrator

Wardhana¹,

Ashari²,

Suryoatmojo³

2020

IJIES

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“…The disadvantage of this structure is that each of the solar dish needs an independent tracking. Qiang Cheng [56] used a large aperture PTC as the primary concentrator and a less aperture PTC as the collimated reflector. The light distribution on the solar cells is uniform.…”

Section: Reflection-type Two Elements Combinationmentioning

confidence: 99%

“…However, for CPV system, energy distribution uniformity of focus becomes a very important design objective because uniformity has a significant effect on the photoelectric conversion efficiency of solar cell. Meanwhile, inhomogeneous distribution makes it difficult to cool the solar cell [20,21,47,55,56,[71][72][73][74][75][76][77][78]85,86]. For CPV/T system, there are two ways for utilization.…”

Section: Applicationmentioning

confidence: 99%

A Review on Solar Concentrators with Multi-surface and Multi-element Combinations

Zheng

Liu

2019

Journal of Daylighting

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Solar concentrator always plays an important role in solar energy collection as it could enhance the energy density effectively. Various structures of solar concentrators have been researched in recent years, among which multi-surface (MS) and multi-element (ME) combinations are the two typical structures. MS concentrator is an improved structure for single surface concentrator. It is usually designed to increase the acceptance angle, enhance the light intercepting efficiency, homogenize the energy distribution, etc. ME concentrator is generally consist of two or more optical elements, in which MS concentrators are usually used as assistant optical components. ME concentrator always has larger tolerance on tracking error so that it is much easier to track the sun. It could be applied in high power concentration. The combination on optical elements of MS and ME solar concentrators was diagramed and theirs advantages and disadvantages were evaluated. Nowadays, solar applications are becoming more and more diverse and concomitantly, the researching methods are also improving. The computer-aided methods including numerical computation and optical simulation are the dominant method in nowadays, which makes it easier to analyze various structures of solar concentrators and their complex applications. Besides, solar applications are not limited in CT and CPV, but in many other fields such as solar daylighting, solar-pumped laser, solar cooling, solar desalination etc. It has been believed that more and more innovative designs on solar concentrator will be proposed in the future.

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“…Arias [12] proposed and discussed an approach for solar concentration enhancement, called thermal conductive focusing. Cheng et al [13] presented a new method to obtain the mother curves of the tailored non-imaging secondary (NIS) used for CPV system. Cook and Said Al-Hallaj [14] used film-based optical elements as a passive solar concentrator for Building Integrated Photovoltaic (BIPV) window applications.…”

Section: Introductionmentioning

confidence: 99%

Study and Comparison Between Two Receivers of Parabolic Trough Collector

Bendjamaa¹,

Allaoui²,

Menni³

et al. 2019

MMEP

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In this paper, we studied in particular solar energy that recovers heat from solar radiation in a fluid, by converting the solar energy into thermal energy by the implementation of thermal solar collectors. This study is the modeling of heat transfer of the parabolic solar collector trough. The objective of this recent simulation is to determine the variation of the outlet temperature, the useful energy and the thermal efficiency of two different receivers. The fluid is water liquid. In order to determine these parameters, we simulate the different types of receivers by the MATLAB/Simulink. According to the simulation findings, using the second receiver leads to an increase of the fluid temperature at the output and the overall solar collector thermal efficiency.

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Tailored non-imaging secondary reflectors designed for solar concentration systems

Cited by 23 publications

References 12 publications

Optimal Control of Robotic Arm System to Improve Flux Distribution on Dual Parabola Dish Concentrator

Optimal Control of Robotic Arm System to Improve Flux Distribution on Dual Parabola Dish Concentrator

A Review on Solar Concentrators with Multi-surface and Multi-element Combinations

Study and Comparison Between Two Receivers of Parabolic Trough Collector

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