A design method of an S-curved parabolic trough collector absorber with a three-dimensional heat flux density distribution

Demagh, Yassine; Bordja, Ilyes; Kabar, Yassine; Benmoussa, H.

doi:10.1016/j.solener.2015.10.002

Cited by 32 publications

(12 citation statements)

References 16 publications

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“…Demagh et al [124] numerically investigated the use of an Scurved/sinusoidal absorber for the PTC instead of a conventional straight absorber tube along the absorber axis with the help of the Monte Carlo ray tracing method. The schematic of the sinusoidal absorber is shown in Fig.…”

Section: Advances In Solar Receiversmentioning

confidence: 99%

Technological Advances to Maximize Solar Collector Energy Output: A Review

Salvi

Bhalla

Taylor

et al. 2018

Journal of Electronic Packaging

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Since it is highly correlated with quality of life, the demand for energy continues to increase as the global population grows and modernizes. Although there has been significant impetus to move away from reliance on fossil fuels for decades (e.g., localized pollution and climate change), solar energy has only recently taken on a non-negligible role in the global production of energy. The photovoltaics (PV) industry has many of the same electronics packaging challenges as the semiconductor industry, because in both cases, high temperatures lead to lowering of the system performance. Also, there are several technologies, which can harvest solar energy solely as heat. Advances in these technologies (e.g., solar selective coatings, design optimizations, and improvement in materials) have also kept the solar thermal market growing in recent years (albeit not nearly as rapidly as PV). This paper presents a review on how heat is managed in solar thermal and PV systems, with a focus on the recent developments for technologies, which can harvest heat to meet global energy demands. It also briefs about possible ways to resolve the challenges or difficulties existing in solar collectors like solar selectivity, thermal stability, etc. As a key enabling technology for reducing radiation heat losses in these devices, the focus of this paper is to discuss the ongoing advances in solar selective coatings and working fluids, which could potentially be used in tandem to filter out or recover the heat that is wasted from PVs. Among the reviewed solar selective coatings, recent advances in selective coating categories like dielectric-metal-dielectric (DMD), multilayered, and cermet-based coatings are considered. In addition, the effects of characteristic changes in glazing, absorber geometry, and solar tracking systems on the performance of solar collectors are also reviewed. A discussion of how these fundamental technological advances could be incorporated with PVs is included as well.

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Section: Advances In Solar Receiversmentioning

confidence: 99%

Technological Advances to Maximize Solar Collector Energy Output: A Review

Salvi

Bhalla

Taylor

et al. 2018

Journal of Electronic Packaging

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“…Ghomrassi et al (2015) calculated the concentrated solar heat flux densities in the parabolic trough collector's focal zone using SOLTRACE software, and the thermal performance of the receiver has been optimized using the computational fluid dynamic simulations. Demagh et al (2015) studied the feasibility of an S-curved/sinusoidal absorber for the PTC system and concluded that the proposed absorber achieves about 3 % better intercept factor than the conventional straight-vacuumized absorber. Fuqiang et al (2015) analyzed the effects of a glass cover on heat-flux distribution using Monte Carlo-ray tracing method and proposed a glass cover with the elliptic-circular cross section.…”

Section: Parabolic Trough Collectormentioning

confidence: 99%

Line-focusing concentrating solar collector-based power plants: a review

Desai

Bandyopadhyay

2016

Clean Techn Environ Policy

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Concentrated solar power (CSP) plant is an emerging technology among different renewable energy sources. Parabolic trough collector (PTC)-based CSP plant, using synthetic or organic oil as a heat-transfer fluid, is the most advanced technology. About 87 % of the operational capacities of CSP plants worldwide are based on PTC technology. Direct steam-generating linear Fresnel reflector (LFR) systems have been developed as a cost-effective alternative to PTC systems. Line-focusing concentrating solar collectors (PTC and LFR), with single-axis tracking, are simple in design and easy to operate. Prior to the detailed design of a CSP plant, it is necessary to finalize type of the solar field, type of the power-generating cycle, overall plant configuration, sizing of the solar field and the power block, etc. The optimal design of a CSP plant minimizes the levelized cost of energy for a given site. In this paper, a detailed review of important design parameters which affect the design of line-focusing concentrating solar collector-based power plants is presented. This includes parameters for solar collector field design, receiver, heat-transfer fluid, thermal energy storage, powergenerating cycle, sizing and configuration of the plant, etc. This review may provide a reference for designing CSP plants. Future research directions are also identified.

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“…Their results prove that the geometrical parameters, including aperture width, focal length and absorber diameter, have great effects on the optical performance of the PTC and the distribution of local concentration ratio around the absorber tube varies greatly with different geometrical configurations and for some special parameter conditions. Yassine Demagh et al [5,6] analysed the feasibility of an S-curved sinusoidal absorber of parabolic trough collector using Tonatiuh code to establish the heat flux density on the outer surface of the absorbers. Their results show that the highest values of the heat flux density decrease, what leads to reduce the temperature gradient; they concluded also that the S-curved absorber should be comparatively better than the conventional straight absorber tube.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation and Solar Flux Distribution Analysis of Parabolic Trough Solar Collector by Adding Secondary Reflector

Reda¹,

Benazza²

2019

I2M

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The biggest problem that can be encountered in the Parabolic Trough Collector is the tube wear, and this is due to the non-uniformity of the temperature distribution over the circumferential angle of the tube. In this paper the absorber tube is moved downward away the focal line of the parabola and a secondary reflector is added overhead the tube in order to reduce the heat flux gradient and homogenize it. The simulation method of the ray's path is adopted by Soltrace software. The numerical results of the enhanced Parabolic Trough Collector show that the heat flux gradient can be enhanced and reduced by 70.37 % and the temperature gradient can be reduced from 159.39 K to 24.16 K by adding the secondary reflector.

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A design method of an S-curved parabolic trough collector absorber with a three-dimensional heat flux density distribution

Cited by 32 publications

References 16 publications

Technological Advances to Maximize Solar Collector Energy Output: A Review

Technological Advances to Maximize Solar Collector Energy Output: A Review

Line-focusing concentrating solar collector-based power plants: a review

Numerical Investigation and Solar Flux Distribution Analysis of Parabolic Trough Solar Collector by Adding Secondary Reflector

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