Novel nonimaging solar concentrator for portable solar systems for developing countries

Freier, Daria; Ramirez-Iniguez, Roberto; Gamio, Carlos; Jafry, Tahseen; Muhammad‐Sukki, Firdaus

doi:10.1109/powerafrica.2017.7991242

Cited by 7 publications

(12 citation statements)

References 11 publications

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“…The gain-to-volume ratio of the GOCRSH is compared to the CRSH (A,B,C) [8] and to several nonimgaing concentrators proposed for building integrated concentrated photovoltaics (BICPV) in Table 3 and Fig. 4.…”

Section: Optimisation Resultsmentioning

confidence: 99%

“…For usability, a solar concentrator needs to have a sufficiently large acceptance angle (defined at 90% of the maximum power) to enable full battery charge without tracking, have low operation and maintenance costs and have a small volume to maintain portability. A novel nonimaging concentrator design was recently proposed for portable solar systems for developing countries [8] and is here referred to as circular rotational square hyperboloid (CRSH).…”

Section: Introductionmentioning

confidence: 99%

“…This lead to a reduction in optical efficiency 1 in particular at angles of incidence close to the acceptance angle. To increase the optical efficiency at larger angles of incidence, a hyperbolic side profile was employed [8]. Since the exit aperture width and the side profile have been changed from the original design method, it is to be investigated if a different curvature and diameter of the entrance aperture and therefore a different curvature of the hyperbolic side profile would yield better results.…”

Section: Introductionmentioning

confidence: 99%

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Design method for nonimaging solar photovoltaic concentrators using genetic algorithms

Freier¹,

Ramirez-Iniguez²,

Muhammad‐Sukki³

et al. 2018

AIP Conference Proceedings

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Off-grid solar chargers are one of the ways forward to achieve universal access to affordable, reliable, sustainable and modern electricity. To achieve this goal, the sustainability aspect of the solar chargers must be further improved. Nonimaging, static solar photovoltaic (PV) concentrators reduce the amount of PV material and thus the embodied energy and greenhouse gas emissions of the solar PV panel, improve its recyclability and reduce the use of hazardous chemicals during its manufacturing, recycling and disposal stages. A novel nonimaging solar PV concentrator named circular rotational square hyperboloid (CRSH) was recently proposed for portable solar systems for developing countries. To further reduce the material usage and production time of the concentrator while achieving an optical concentration ratio above 3x within the angles of incidence of ± 40º, the parameters of the design were optimised using genetic algorithms. The optimisation parameters are discussed and the influence of the objective function on the optimised design is presented. The genetically optimised circular rotational square hyperboloid (GOCRSH) concentrator shows an improved gain-to-volume ratio compared to the CRSH and to several nonimaging solar photovoltaic concentrators proposed for building integrated concentrated PV.

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Section: Optimisation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design method for nonimaging solar photovoltaic concentrators using genetic algorithms

Freier¹,

Ramirez-Iniguez²,

Muhammad‐Sukki³

et al. 2018

AIP Conference Proceedings

Self Cite

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show abstract

“…From a review of existing concentrators published in [1] it was concluded that the most suitable concentrator type for portable solar systems for developing countries is the static nonimaging concentrator since no minimal focal distance, tracking or cooling is required and compact designs can therefore be achieved. A comparative table of the nonimaging concentrator designs is presented in Table 1 which includes nonimaging concentrators proposed for building integrated PV (Refractive 3D CCPC [13], SEH [13], RADTIRC [6], RACPC [14], Aspheric lens [15]) as well as the circular rotational square hyperboloid (CRSH) [16] proposed for portable solar systems for developing countries. The concentrators are rated based on their optical properties as well as on their volume and overall concentrator height to find the most compact and efficient nonimaging concentrator.…”

Section: = × (3)mentioning

confidence: 99%

“…[96] has a wide acceptance angle and geometrical concentration ratio, its optical efficiency however can be further improved and height further reduced. From the CRSH designs the CRSH_C is the most suitable due to its smallest height and widest acceptance angle, its height, however, can be reduced and acceptance angle further improved [16]. Whilst this design has already shown to be more compact than the nonimaging concentrators for building integration presented in Table 1, its design method does not guarantee maximum compactness.…”

Section: = × (3)mentioning

confidence: 99%

Design method of a compact static nonimaging concentrator for portable photovoltaics using parameterisation and numerical optimisation

et al. 2020

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Portable solar chargers are one of the technologies that can help to achieve universal access to electricity by 2030. However, the large number of solar photovoltaic devices required and their short life-span make achieving this goal a resource and energy intensive process. To reduce the embodied energy, the embodied carbon and the human and eco-toxicity potential of portable solar chargers, solar photovoltaic concentrators can be used. This paper proposes a new nonimaging solar photovoltaic concentrator design which has material efficiency, portability and off-grid use as its main feature. The main contribution of this paper is the design method of the new 3D nonimaging concentrator containing the parametric equation of the concentrator surfaces and the numeric optimisation of the design parameters. The developed optimisation program is based on genetic algorithms which parameters were determined experimentally in this paper. The concentrator design achieved with this method is 43% less material intensive than the most compact nonimaging solar concentrator available in literature. This design approach can be used to find concentrator designs with specific volumes, heights, concentration ratios, acceptance angles and optical efficiency. It is therefore a step towards more material efficient and more sustainable nonimaging concentrators and more sustainable portable solar photovoltaic systems.

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Indoor performance analysis of genetically optimized circular rotational square hyperboloid (GOCRSH) concentrator

et al. 2021

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Novel nonimaging solar concentrator for portable solar systems for developing countries

Cited by 7 publications

References 11 publications

Design method for nonimaging solar photovoltaic concentrators using genetic algorithms

Design method for nonimaging solar photovoltaic concentrators using genetic algorithms

Design method of a compact static nonimaging concentrator for portable photovoltaics using parameterisation and numerical optimisation

Indoor performance analysis of genetically optimized circular rotational square hyperboloid (GOCRSH) concentrator

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