Simulation and assessment of operation strategies for solar thermal power plants with a thermocline storage tank

Biencinto, Mario; Bayón, Rocío; Rojas, Esther; González, L.

doi:10.1016/j.solener.2014.02.037

Cited by 79 publications

(30 citation statements)

References 14 publications

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“…In this way, Biencinto et al [168] carried out an annual performance analysis for different charge and discharge operation strategies, in order to find out the best operation mode that minimizes the difference in annual yield between both systems. With respect to the annual electricity yield, the best strategy for discharge processes is a total extraction of thermocline region, feeding the power block, firstly, for electricity production and, secondly, for the next day preheating.…”

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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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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“…5, based on the systematic design by Biencinto et al [46]. The HTF used in the solar field is Therminol VP-1.…”

Section: Descriptions Of the Examplementioning

confidence: 99%

General volume sizing strategy for thermal storage system using phase change material for concentrated solar thermal power plant

Chan

et al. 2015

Applied Energy

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h i g h l i g h t sWe present a method of sizing a thermocline thermal storage system for a CSP plant. Phase change materials (PCM) are considered for this study. Sizing criterion is that the discharged fluid temperature is above a cutoff point. The sizing procedures were presented through one design example. Latent heat storage system (LHSS) Phase change material (PCM) General volume sizing strategy Enthalpy-based 1D transient model a b s t r a c tWith an auxiliary large capacity thermal storage using phase change material (PCM), Concentrated Solar Power (CSP) is a promising technology for high efficiency solar energy utilization. In a thermal storage system, a dual-media thermal storage tank is typically adopted in industry for the purpose of reducing the use of the heat transfer fluid (HTF) which is usually expensive. While the sensible heat storage system (SHSS) has been well studied, a dual-media latent heat storage system (LHSS) still needs more attention and study. The volume sizing of the thermal storage tank, considering daily cyclic operations, is of particular significance. In this paper, a general volume sizing strategy for LHSS is proposed, based on an enthalpy-based 1D transient model. One example was presented to demonstrate how to apply this strategy to obtain an actual storage tank volume. With this volume, a LHSS can supply heat to a thermal power plant with the HTF at temperatures above a cutoff point during a desired 6 h of operation. This general volume sizing strategy is believed to be of particular interest for the solar thermal power industry.

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“…Even if the annual electricity yield of a thermocline tank is always lower than a two-tank system http://dx.doi.org/10.1016/j.apenergy.2015.05.074 0306-2619/Ó 2015 Elsevier Ltd. All rights reserved. [4], due to more important thermal diffusion, thermocline TES system has been shown to be an important candidate for thermal energy storage of the future generations of CSP plants, with a potential cost reduction of the plants and therefore the improvement of their marketability [5,6]. Moreover the selection of thermocline TES allows to deliver thermal energy at constant temperature during most of its discharge step.…”

Section: Introductionmentioning

confidence: 99%

Compatibility tests between Solar Salt and thermal storage ceramics from inorganic industrial wastes

Motte¹,

Falcoz²,

Véron³

et al. 2015

Applied Energy

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Simulation and assessment of operation strategies for solar thermal power plants with a thermocline storage tank

Cited by 79 publications

References 14 publications

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

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

General volume sizing strategy for thermal storage system using phase change material for concentrated solar thermal power plant

Compatibility tests between Solar Salt and thermal storage ceramics from inorganic industrial wastes

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