Towards standardization of in-site parabolic trough collector testing in solar thermal power plants

Sallaberry, Fabienne; Valenzuela, Loreto; Jalón, Alberto García de; Leon, J.M. Ponce de; Bernad, Ignacio David

doi:10.1063/1.4949229

Cited by 10 publications

(3 citation statements)

References 8 publications

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“…Several thresholds were addressed, the most important of which is the length of the steady-state testing period and solar power performance system. Sallaberry et al [27] proposed a testing methodology based on taking a large PTC in the Plataforma Solar de Almería. This methodology was validated according to a previous study [28], depending on steady-state conditions.…”

Section: Steady-state Simulation Modelsmentioning

confidence: 99%

Advances in Process Modelling and Simulation of Parabolic Trough Power Plants: A Review

et al. 2022

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The common design of thermal power plants is fundamentally oriented towards achieving a high-process performance, with market demands necessitating enhanced operational stability as a result of ongoing global support for renewable energy sources. Indeed, dynamic simulation represents one useful and cost-effective choice for optimizing the flexibility of parabolic trough power plants (PTPP) in a range of transient operating conditions, such as weather changes, resulting again in variations of the output load as well as varying start-up times. The purpose of this review is to provide an overview of steady-state and dynamic modelling for PTPP design, development, and optimization. This gives us a greater opportunity for a broad understanding of the PTPPs subjected to a variety of irradiance solar constraints. The most important features of the steady-state and their uses are reviewed, and the most important programs used in steady-state modelling are also highlighted. In addition, the start-up process of the plant, thermal storage system capacities and response dynamics (charging and discharging modes), and yearly electricity yield can be analyzed using dynamic modelling. Depending on the dynamic simulation, specific uses can be realized, including control loop optimization, load estimation for critical in-service equipment, and emergency safety assessment of power plants in the event of an outage. Based on this review, a detailed overview of the dynamic simulation of PTPP, and its development and application in various simulation programs, is presented. Here, a survey of computational dynamic modelling software commonly applied for commercial and academic applications is performed, accompanied by various sample models of simulation programs such as APROS, DYNAMICS, DYMOLA, and ASPEN PLUS. The simulation programs generally depend on the conservation equations of mass, momentum, species, and energy. However, for the equation of equilibrium, specific mathematical expressions rely on the basic flow model. The essential flow models involved, together with the basic assumptions, are presented, and are supplemented through a general survey covering popular simulation programs. Various previous research on the dynamic simulation of the PTPP are reviewed and analyzed in this paper. Here, several studies in the literature regarding the dynamic simulation of the PTPP are addressed and analyzed. Specific consideration is given to the studies including model verification, in order to explore the effect of modelling assumptions regarding the simulation outputs.

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Section: Steady-state Simulation Modelsmentioning

confidence: 99%

Advances in Process Modelling and Simulation of Parabolic Trough Power Plants: A Review

et al. 2022

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“…where incid is the incidence angle of solar radiation and a a I II are two empirical parameters derived through experimental data reported in (Sallaberry et al, 2016), following the methodology presented in (Valenzuela et al, 2014). In order to consider unaccounted optical effects, e.g., dirt on the parabolic mirrors and tube receivers, the parameter un was included in the calculation of the optical efficiency.…”

Section: Initial Conditions Model Inputs and Parametersmentioning

confidence: 99%

Steady-state and dynamic validation of a parabolic trough collector model using the ThermoCycle Modelica library

et al. 2018

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Small-capacity (< 200 kW el ) concentrated solar power plants has been recognized as a promising technology for micro power applications. In particular, parabolic trough collectors have been identified as the most promising focusing technology. In this context, physics-based dynamic model of parabolic trough constitutes a significant tool for the further development of the technology, allowing to evaluate and optimize response times during transients, or to implement and test innovative control strategies. In this contribution, the dynamic model of a parabolic trough line based on the ThermoCycle Modelica library is validated against steady-state and transient experimental results from the parabolic trough test loop available at the Plataforma Solar de Almería, Spain. The simulation results are in good agreement with the measurements, both in steady-state and in transient conditions. The validated model is readily usable to investigate demanding dynamics-based problems for low capacity solar power systems.

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“…where Θ incid is the incidence angle of solar radiation and a I − a II are two empirical parameters derived through experimental data reported in [27], following the methodology presented in [31]. In order to consider unaccounted optical effects during testing, e.g., dirt on the parabolic mirrors and tube receivers, the parameter un was included in the calculation of the optical efficiency.…”

Section: Initial Conditions Model Inputs and Parametersmentioning

confidence: 99%

Steady-state and dynamic validation of a parabolic through collector model using the ThermoCycle Modelica library

Bonilla¹

2018

Preprint

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Small-capacity (<200 kWel) concentrated solar power plants has been recognized as a promising technology for micro power applications. In particular, parabolic through collectors have been identified as the most promising focusing technology. In this context, physics-based dynamic model of parabolic through constitutes a significant tool for the further development of the technology, allowing to evaluate and optimize response times during transients, or to implement and test innovative control strategies. In this contribution, the dynamic model of a parabolic trough line t based on the ThermoCycle Modelica library is validated against steady-state and transient experimental results from the parabolic through test loop available at the Plataforma Solar de Almería, Spain. The simulation results are in good agreement with the measurements, both in steady-state and in transient conditions. The validated model is readily usable to investigate demanding dynamics-based problems for low capacity solar power systems.

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Towards standardization of in-site parabolic trough collector testing in solar thermal power plants

Cited by 10 publications

References 8 publications

Advances in Process Modelling and Simulation of Parabolic Trough Power Plants: A Review

Advances in Process Modelling and Simulation of Parabolic Trough Power Plants: A Review

Steady-state and dynamic validation of a parabolic trough collector model using the ThermoCycle Modelica library

Steady-state and dynamic validation of a parabolic through collector model using the ThermoCycle Modelica library

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