The Calcium-Looping (CaCO3/CaO) process for thermochemical energy storage in Concentrating Solar Power plants

Ortíz, C.; Chacartegui, Ricardo; Pérez‐Maqueda, Luis A.; Giménez, Patricio

doi:10.1016/j.rser.2019.109252

Cited by 233 publications

(139 citation statements)

References 157 publications

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“…Today, the deployed CSP capacity worldwide is around 5 GW, while around 7 GW is still under development or is expected to be implemented in 2020. More than 40% of the world's CSP plants are installed with thermal storage systems; this figure may increase to 80% in the future . The thermochemical storage system integrated with CSP plants has reliable benefits over sensible and latent thermal storage.…”

Section: Thermochemical Energy Storagementioning

confidence: 99%

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Review on solar thermal energy storage technologies and their geometrical configurations

Suresh

Saini

2020

Int J Energy Res

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Summary Because of the unstable and intermittent nature of solar energy availability, a thermal energy storage system is required to integrate with the collectors to store thermal energy and retrieve it whenever it is required. Thermal energy storage not only eliminates the discrepancy between energy supply and demand but also increases the performance and reliability of energy systems and plays a crucial role in energy conservation. Under this paper, different thermal energy storage methods, heat transfer enhancement techniques, storage materials, heat transfer fluids, and geometrical configurations are discussed. A comparative assessment of various thermal energy storage methods is also presented. Sensible heat storage involves storing thermal energy within the storage medium by increasing temperature without undergoing any phase transformation, whereas latent heat storage involves storing thermal energy within the material during the transition phase. Combined thermal energy storage is the novel approach to store thermal energy by combining both sensible and latent storage. Based on the literature review, it was found that most of the researchers carried out their work on sensible and latent storage systems with the different storage media and heat transfer fluids. Limited work on a combined sensible‐latent heat thermal energy storage system with different storage materials and heat transfer fluids was carried out so far. Further, combined sensible and latent heat storage systems are reported to have a promising approach, as it reduces the cost and increases the energy storage with a stabilized outflow of temperature from the system. The studies discussed and presented in this paper may be helpful to carry out further research in this area.

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Section: Thermochemical Energy Storagementioning

confidence: 99%

“…More than 40% of the world's CSP plants are installed with thermal storage systems; this figure may increase to 80% in the future. 103 The thermochemical storage system integrated with CSP plants has reliable benefits over sensible and latent thermal storage. Jose et al 104 system.…”

Section: Engineering and Industrial Applications Of A Thermochemicamentioning

confidence: 99%

Review on solar thermal energy storage technologies and their geometrical configurations

Suresh

Saini

2020

Int J Energy Res

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“…As the thermochemical mechanism allows long-term energy storage, as long as the reactants are stored separately, and the stored energy is almost completely recovered, it is regarded as a viable and effective route for long-term thermal energy storage and transport [15]. A calcium looping (CaL) process, which involves either hydration or carbonation of CaO, was first proposed for energy storage in the mid-1970s [16,17] and has been considered among the best candidates for energy storage [14,15], especially when linked with concentrating solar power plants [18]. The carbonation reaction offers nearly 50% higher theoretical thermal energy density (1222 kWh$m -3 ) compared to the hydration reaction (833 kWh$m -3 ).…”

Section: Links Between Energy Storage and Carbon Capturementioning

confidence: 99%

“…Namely, such process can accommodate excess electricity generated from renewable energy sources to satisfy the process power requirement, which arises mostly from the air separation unit and CO 2 compression unit, and has a permanent source of CO 2 from the fossil fuel power plant. Moreover, the heat requirement for sorbent regeneration can be provided by a concentrating solar plant [18]. Furthermore, the sorbent performance can be improved through a sorbent hydration stage, leading to operation with higher average conversions [43], and thus higher energy densities.…”

Section: Representative Case Studiesmentioning

confidence: 99%

Linking renewables and fossil fuels with carbon capture via energy storage for a sustainable energy future

Hanak

2019

Front. Chem. Sci. Eng.

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Renewable energy sources and low-carbon power generation systems with carbon capture and storage (CCS) are expected to be key contributors towards the decarbonisation of the energy sector and to ensure sustainable energy supply in the future. However, the variable nature of wind and solar power generation systems may affect the operation of the electricity system grid. Deployment of energy storage is expected to increase grid stability and renewable energy utilisation. The power sector of the future, therefore, needs to seek a synergy between renewable energy sources and low-carbon fossil fuel power generation. This can be achieved via wide deployment of CCS linked with energy storage. Interestingly, recent progress in both the CCS and energy storage fields reveals that technologies such as calcium looping are technically viable and promising options in both cases. Novel integrated systems can be achieved by integrating these applications into CCS with inherent energy storage capacity, as well as linking other CCS technologies with renewable energy sources via energy storage technologies, which will maximise the profit from electricity production, mitigate efficiency and economic penalties related to CCS, and improve renewable energy utilisation.

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“…In recent years the study of the CaL process has attracted the attention of many researchers. A large number of works have been focused on the CaL process, mainly based on lab-scale analysis and process simulations (Blamey et al, 2010;Ortiz et al, 2019b;Perejón et al, 2016b). Pilot-scale demonstration plants up to 2 MWth have demonstrated the efficiency of the process (Arias et al, 2013;Hanak et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Scaling-up the Calcium-Looping Process for CO<sub>2</sub> Capture and Energy Storage

Ortíz

Chacartegui

Pérez‐Maqueda

et al. 2021

KONA

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The Calcium-Looping (CaL) process has emerged in the last years as a promising technology to face two key challenges within the future energy scenario: energy storage in renewable energy-based plants and CO 2 capture from fossil fuel combustion. Based on the multicycle calcination-carbonation reaction of CaCO 3 for both thermochemical energy storage and post-combustion CO 2 capture applications, the operating conditions for each application may involve remarkably different characteristics regarding kinetics, heat transfer and material multicycle activity performance. The novelty and urgency of developing these applications demand an important effort to overcome serious issues, most of them related to gas-solids reactions and material handling. This work reviews the latest results from international research projects including a critical assessment of the technology needed to scale up the process. A set of equipment and methods already proved as well as those requiring further demonstration are discussed. An emphasis is put on critical equipment such as gas-solids reactors for both calcination and carbonation, power block integration, gas and solids conveying systems and auxiliary equipment for both energy storage and CO 2 capture CaL applications.

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The Calcium-Looping (CaCO3/CaO) process for thermochemical energy storage in Concentrating Solar Power plants

Cited by 233 publications

References 157 publications

Review on solar thermal energy storage technologies and their geometrical configurations

Review on solar thermal energy storage technologies and their geometrical configurations

Linking renewables and fossil fuels with carbon capture via energy storage for a sustainable energy future

Scaling-up the Calcium-Looping Process for CO<sub>2</sub> Capture and Energy Storage

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