Estimating intercept factor of a parabolic solar trough collector with new supporting structure using off-the-shelf photogrammetric equipment

García-Cortés, Silverio; Bello-García, A.; Ordóñez, Celestino

doi:10.1016/j.apenergy.2011.08.032

Cited by 47 publications

(15 citation statements)

References 13 publications

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“…In fact, the concentration is degraded due to imperfections or errors that may result from poor manufacturing and/or assembly, imperfect tracking of the Sun, and/or poor operating conditions. These optical errors are included in the so-called intercept factor γ which is usually calculated using statistical approaches [10,22] or experimentally [23] and remains only an approximation.…”

Section: Thermal Radiation Heat Transfer Between the Glass Envelope Amentioning

confidence: 99%

Heat transfer analysis and numerical simulation of a parabolic trough solar collector

et al. 2013

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Parabolic trough solar collector is the most proven industry-scale solar generation technology today available. The thermal performance of such devices is of major interest for optimising the solar field output and increase the efficiency of power plants. In this paper, a detailed numerical heat transfer model based on the finite volume method for these equipment is presented.In the model, the different elements of the receiver are discretised into sev- C p specific heat at constant pressure

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Section: Thermal Radiation Heat Transfer Between the Glass Envelope Amentioning

confidence: 99%

Heat transfer analysis and numerical simulation of a parabolic trough solar collector

et al. 2013

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“…Several other studies have been carried out to investigate the errors affecting the optical performance of parabolic trough systems (García-Cortés et al, 2012,Lee, 2014,Maccari and Montecchi, 2007,Thomas and Guven, 1994. For quality control purposes, the intercept factor of parabolic trough systems can be measured and necessary improvements made (Pottler et al, 2014).…”

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confidence: 99%

Influence of optical errors on the thermal and thermodynamic performance of a solar parabolic trough receiver

et al. 2016

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HIGHLIGHTS• Effect of optical errors on performance of a parabolic trough receiver is presented.• Actual heat flux profiles were obtained using Monte Carlo ray tracing and presented.• Thermal and thermodynamic analysis of the receiver is determined numerically.• Effect of optical errors on heat flux and temperature distribution is investigated.• Influence of optical errors on receiver entropy generation rates is presented. ABSTRACTThis paper presents results of an investigation covering the influence of optical errors on the thermal and thermodynamic performance of a solar parabolic trough system. The optical performance was evaluated by using Monte Carlo ray tracing for slope errors and specularity For the range of parameters considered, the intercept factor reduces by up to 21% while the overall thermal efficiency reduces by up to 17% as optical errors increase. Receiver thermodynamic performance is shown to deteriorate as slope errors increase.

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“…García‐Cortés et al. () provide a description of this process but the present study explains, in more detail, the photogrammetric analysis performed. Thus the results for the free and constrained network adjustments are shown in Table and a more robust method for verifying the external precision has also been used.…”

Section: Applicationmentioning

confidence: 93%

“…García‐Cortés et al. () provide a description of this process but the present paper explains, in more detail, the photogrammetric analysis performed, with a more detailed assessment using alternative computational techniques.…”

Section: Introductionmentioning

confidence: 99%

Validating The Supporting Structure of A Parabolic Solar Collector Using Close Range Photogrammetry

Roca‐Pardiñas

Ordóñez

García-Cortés

et al. 2013

The Photogrammetric Record

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The optical efficiency of parabolic trough collectors depends on their geometric agreement with the parabolic profile design which, in turn, largely depends on the structure supporting the collector. A method for assessing the degree of agreement between the measured geometry and the theoretical design surface is described, which takes into account uncertainty in the point coordinates and is based on kernel smoothing and bootstrapping methods. The technique was applied to a 12 m long parabolic trough collector module with a newly designed supporting structure. The analysis revealed that there were significant differences between the estimated and theoretical surfaces in several parts of the collector.

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Estimating intercept factor of a parabolic solar trough collector with new supporting structure using off-the-shelf photogrammetric equipment

Cited by 47 publications

References 13 publications

Heat transfer analysis and numerical simulation of a parabolic trough solar collector

Heat transfer analysis and numerical simulation of a parabolic trough solar collector

Influence of optical errors on the thermal and thermodynamic performance of a solar parabolic trough receiver

Validating The Supporting Structure of A Parabolic Solar Collector Using Close Range Photogrammetry

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