Multi-objective and thermodynamic optimisation of a parabolic trough receiver with perforated plate inserts

Mwesigye, Aggrey; Bello‐Ochende, Tunde; Meyer, Josua P.

doi:10.1016/j.applthermaleng.2014.12.018

Cited by 77 publications

(15 citation statements)

References 34 publications

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“…The validations of the receiver thermal model and the entropy generation model were presented in previous investigations by Mwesigye et al [17,51] and good agreement was achieved in these studies. For the same experimental conditions used by Dudely et al…”

Section: Validation Of Numerical Resultsmentioning

confidence: 94%

Thermodynamic optimisation of the performance of a parabolic trough receiver using synthetic oil–Al 2 O 3 nanofluid

2015

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In this paper, results of a thermodynamic analysis using the entropy generation minimisation method for a parabolic trough receiver tube making use of a synthetic oil-Al 2 O 3 nanofluid as a heat transfer fluid are presented. A parabolic trough collector system with a rim angle of Nanoparticle volume fractions in the range 0 ≤ ϕ ≤ 8% were used. The local entropy generation rates due to fluid flow and heat transfer were determined numerically and used for the thermodynamic analysis. The study shows that using nanofluids improves the thermal efficiency of the receiver by up to 7.6%. There is an optimal Reynolds number at each inlet temperature and volume fraction for which the entropy generated is a minimum. The optimal Reynolds number decreases as the volume fraction increases. There is also a Reynolds number at every inlet temperature and volume fraction beyond which use of nanofluids is thermodynamically undesirable.

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Section: Validation Of Numerical Resultsmentioning

confidence: 94%

Thermodynamic optimisation of the performance of a parabolic trough receiver using synthetic oil–Al 2 O 3 nanofluid

2015

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“…Selected studies on heat transfer enhancement techniques in parabolic trough receivers include: The use of inserts inside the receiver's absorber tube was investigated by Mwesigye et al [16,17], the use of porous discs was studied by Ravi Kumar and Reddy [13]. In another study, Ravi Kumar and Reddy investigated the use of different fin configurations for heat transfer enhancement in a parabolic trough receiver [12].…”

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confidence: 99%

Thermal performance and entropy generation analysis of a high concentration ratio parabolic trough solar collector with Cu-Therminol®VP-1 nanofluid

Mwesigye

Huan

Meyer

2016

Energy Conversion and Management

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This paper presents results of a numerical study on the thermal and thermodynamic performance of a high concentration ratio parabolic trough solar collector using Cu- Above a certain Reynolds number, further increase in the Reynolds numbers makes the entropy generation higher than that of a receiver with only the base fluid. Key wordsConcentration ratio, entropy generation, nanofluid, parabolic trough receiver, thermal efficiency. †

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“…At the same, receiver size has been studied, with the purpose of enhancement system heat transfer, [16], with the thermal resistance decrease, turbulence intensity increase and increase of effective thermal conductivity. As presented in [17], [18], where thermal and thermodynamic efficiency of a CCP was analyzed with a perforated plate, geometrical parameters related to the plate as slope angle, were modified in the research, a 8% increase was obtained in system efficiency.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Thermal Analysis of a CCP Collector System Based on Fractal Architecture: Receiver Proposal

2019

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Solar concentrator technology has been researches in different fields in order to enhancement efficiency and energy storage of these systems. Some changes in fluid and numerous components of the collectors has been proposed in recent years. In this context, this paper present results associates to the modeling and thermal analysis of a concentrating system based on parabolic through collector with receiver piper, designed with fractal geometry with the aim of improve system heat transfer. Founded on thermal modeling of heat transfer phenomena as radiation, convection and conduction, physical and mathematical relations between fractal geometrical parameters and transfer heat coefficient were established to find the influence of a chaotic structure on thermal behavior. Proposed designs were simulated through Solid works ® Flow Simulation tool. Was possible obtain maximum temperatures in air with fractal and cylindrical pipes of de 89°C, 86°C y 81°C respectively. The gap between fractal geometry results and cylindrical geometry is 10°C around.

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Multi-objective and thermodynamic optimisation of a parabolic trough receiver with perforated plate inserts

Cited by 77 publications

References 34 publications

Thermodynamic optimisation of the performance of a parabolic trough receiver using synthetic oil–Al 2 O 3 nanofluid

Thermodynamic optimisation of the performance of a parabolic trough receiver using synthetic oil–Al 2 O 3 nanofluid

Thermal performance and entropy generation analysis of a high concentration ratio parabolic trough solar collector with Cu-Therminol®VP-1 nanofluid

Modeling and Thermal Analysis of a CCP Collector System Based on Fractal Architecture: Receiver Proposal

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