Performance model for parabolic trough solar thermal power plants with thermal storage: Comparison to operating plant data

Llorente-Garcia, Isabel; Álvarez, José Luis Domínguez; Blanco, Daniel

doi:10.1016/j.solener.2011.07.002

Cited by 251 publications

(40 citation statements)

References 14 publications

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“…Figure 3 shows a schematic representation of the disposition of the TES in a solar thermal plant. This type of representations is widely accepted in literature [2,28,42] to represent the three main circuits in plants of this kind: the solar field (SF), through which the heat transfer fluid (HTF) circulates, the power block, which circulates water and steam, and the TES system. The performance of a TES system defines three possible operation modes: charge, discharge and idle mode.…”

Section: Methodsmentioning

confidence: 99%

On the Convenience of Using Simulation Models to Optimize the Control Strategy of Molten-Salt Heat Storage Systems in Solar Thermal Power Plants

Prieto

Martínez

Peon³

et al. 2017

Energies

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Thermal oil has been used as heat transfer fluid in many solar thermal power plants, which also use molten salts as thermal energy storage system. Since the engineering of these plants is relatively new, control of the thermal energy storage system is currently achieved in manual or semiautomatic ways, controlling its variables with proportional-integral-derivative (PID) regulators. Once the plant is running, it is very difficult to obtain permission to try new control strategies. Hence, most plants keep running on these simple, sometimes inefficient control algorithms. This paper explores the results obtained with different control strategies implemented on a complete model of energy storage systems based on molten salt. The results provided by the model allow the optimum control strategy to be selected. Comparison of the results obtained by simulation of these control strategies and actual results obtained from a real plant, confirm the accuracy of the selection made.

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Section: Methodsmentioning

confidence: 99%

On the Convenience of Using Simulation Models to Optimize the Control Strategy of Molten-Salt Heat Storage Systems in Solar Thermal Power Plants

Prieto

Martínez

Peon³

et al. 2017

Energies

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“…Several numerical models for parabolic trough CSP plant that include thermal storage system have been developed by different organizations [160][161][162][163][164]. All these models only consider the conventional molten-salt two-tank storage system for which outlet/inlet temperatures are fixed.…”

Section: Integration and Seamless Operation Of Csp Using Thermocline mentioning

confidence: 99%

Application of phase change materials for thermal energy storage in concentrated solar thermal power plants: A review to recent developments

2015

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h i g h l i g h t sThermal storage for solar thermal power using phase change materials is reviewed. Various phase change materials and manufacturing techniques are surveyed. Mathematical modeling and simulations to latent heat energy storage is reviewed. Integration of a PCM-based TES unit into a power generation system is discussed. Cost analysis of thermocline latent heat thermal storage systems is reviewed. Keywords: Concentrated solar power (CSP) Thermal energy storage (TES) Phase change material (PCM) Latent heat a b s t r a c tThe objective of this paper is to review the recent technologies of thermal energy storage (TES) using phase change materials (PCM) for various applications, particularly concentrated solar thermal power (CSP) generation systems. Five issues of the technology will be discussed based on a survey to the state-of-the-art development and understandings. The first part is about various phase change materials (PCM) in thermal storage applications and recent development of PCM encapsulation technologies. The second is the current status of research and application of latent heat storage systems in CSP plants. The third is the mathematical modeling and numerical simulations to the phenomenon of latent heat thermal storage. The fourth is about the issues of integration of a PCM-based TES unit into a power generation system and the operation. The last part is a discussion about the cost issues and comparison between sensible and latent heat TES systems. The surveyed information will be very helpful to researchers and engineers in energy storage industry and particularly solar thermal power industry.

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“…Numerous researchers have addressed various issues and tackled with numerous aspects of solar power production [1][2][3][4][5][6][7][8]. Experimental and theoretical studies carried out by several researchers have shown that solar photovoltaic or photovoltaic thermal technologies are best suited for independent power and heat production.…”

Section: Introductionmentioning

confidence: 99%

Transient Energy and Exergy Analyses of a Solar Based Integrated System

Rabbani

Ratlamwala

Dinçer

2014

Journal of Solar Energy Engineering

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The present study focuses on transient energy and exergy analyses of an integrated heliostat field, gas-turbine cycle and organic Rankine cycle system capable of generating power and heat in a carbon-free manner. A parametric study is carried out to ascertain the effect of varying the exit temperature of salt and the pressure ratio (PR) on the net work output, rate of heat lost from the receiver, and energy and exergy efficiencies for 365 days of the year and from 10:00 am to 2:00 pm. The results are obtained for the city of Toronto, Canada and indicate that the net work output increases from 1481 to 3339 kW with a rise in the exit salt temperature from 1200 to 1600 K. The energy and exergy efficiencies of the integrated system vary from 0.72 to 0.78 and 0.36 to 0.46, respectively, with a rise in the exit salt temperature. The energy and exergy efficiencies vary from 0.68 to 0.73 and 0.35 to 0.39, respectively, with an increase in the PR from 10 to 20.

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Performance model for parabolic trough solar thermal power plants with thermal storage: Comparison to operating plant data

Cited by 251 publications

References 14 publications

On the Convenience of Using Simulation Models to Optimize the Control Strategy of Molten-Salt Heat Storage Systems in Solar Thermal Power Plants

On the Convenience of Using Simulation Models to Optimize the Control Strategy of Molten-Salt Heat Storage Systems in Solar Thermal Power Plants

Application of phase change materials for thermal energy storage in concentrated solar thermal power plants: A review to recent developments

Transient Energy and Exergy Analyses of a Solar Based Integrated System

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