Long-term Thermal Energy Storage Using Thermochemical Materials

Hawwash, A.A.; Hassan, Hamdy; Ahmed, Mahmoud; feky, Khalid El

doi:10.1016/j.egypro.2017.11.111

Cited by 14 publications

(6 citation statements)

References 8 publications

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“…Dry air was supplied from a compressed air source and subsequently passed through Dreschel bottles to provide the reactor with air at a constant 19 C and 12.9 g H 2 O/cm 3 for the CaCl 2 and LiNO 3 SIM materials and 15.5 g H 2 O/cm 3 for the MgSO 4 material as prior evaluations had highlighted limited reactivity at lower water vapour concentrations (38). These temperature and water vapour concentration level were chosen as it provides sufficient moisture at a rate which provides a measureable change in temperature over a practical experimental period, (32), it represents a water vapour concentrations which is comparable to trends observed UK Autumn / Winter levels (39) and it could be provided consistently in the laboratory over the entire measurement period (32). Temperature and humidity were monitored using type K thermocouples and a TE-HPP805C031 RH sensor at the locations identified in Figure 2.…”

Section: Methodsmentioning

confidence: 99%

Discharge performance of blended salt in matrix materials for low enthalpy thermochemical storage

Sutton

Jewell

Searle

et al. 2018

Applied Thermal Engineering

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A novel study is undertaken on low cost thermochemical storage which utilizes temperatures which are compatible with low grade renewable energy capture. The discharge performance of thermochemical storage matrix materials is assessed using a custom developed experimental apparatus which provides a means of comparing materials under scaled reactor conditions. The basic performance of three salts (CaCl 2 , LiNO 3 and MgSO 4 ) was investigated and their subsequent performance using layering and blending techniques established that the performance could be increased by up to 24% through the correct choice of mixing technique. Layering the CaCl 2 on the LiNO 3 provided the most efficient thermal release strategy and yielded a thermal storage density of 0.2 GJ/m 3 . The research also uniquely highlights the important finding that incorrect mixing of the materials can lead to a significant reduction in efficiency with freely mixed CaCl 2 and LiNO 3 possessing a storage capacity of less than 0.01 GJ/m 3 as a result of chemical interactions between the deliquesced materials in close proximity. The paper has impact for the design and control of thermochemical storage systems as it clearly identifies how performance can be improved or degraded by the choice and the structuring of the materials.

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Section: Methodsmentioning

confidence: 99%

Discharge performance of blended salt in matrix materials for low enthalpy thermochemical storage

Sutton

Jewell

Searle

et al. 2018

Applied Thermal Engineering

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“…The available candidates for WSTES salt hydrates, low to medium, have been reported and listed by researchers in the last few years (Donkers et al, 2017;Clark et al, 2020;Glasser, 2014;Hawwash et al, 2017). The outstanding candidates are listed in Figure 3, according to their deployment level.…”

Section: Candidatesmentioning

confidence: 99%

“…Ferchaud et al (2012a) studied the effect of vapor pressure in the dehydration reaction to find the optimal conditions that should be set in a TC storage system. The two consecutive FIGURE 3 TCS screening candidates for building applications (Donkers et al, 2017;Clark et al, 2020;Glasser, 2014;Hawwash et al, 2017). No research is defined as materials not studied in any field but that is capable of storing thermochemical heat.…”

Section: Magnesium Sulfatementioning

confidence: 99%

Water sorption-based thermochemical storage materials: A review from material candidates to manufacturing routes

Palacios¹,

Navarro²,

Barreneche³

et al. 2022

Front. Therm. Eng.

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A comprehensive and updated review is provided in this article, with a focus on water sorption-based thermochemical storage (WSTCS) materials, covering materials and their manufacturing routes. The state of the art of 22 most relevant salt hydrates is classified into seven groups (bromides, sulphates, carbonates, chlorides, nitrates, hydroxides, and sulphides) and studied as candidates. This is followed by a discussion on TCS material manufacturing, covering both conventional (shaping, pelletizing, etc.) and more advanced routes (e.g., extrusion, 3D printing, encapsulation, etc.). Finally, concluding remarks are presented, including limitations and future potentials for TCS research.

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“…[ 24,25 ] Moreover, since the energy is stored in a chemical form, TCES is capable of long‐term, long‐distance, and even seasonal energy storage, which is difficult for STES and LTES. [ 26,27 ] Various materials have been proposed for TCES. [ 19,28 ] Among them, redox‐active metal oxides have shown the greatest promise due to their ability to operate at high temperatures and without gas storage.…”

Section: Introductionmentioning

confidence: 99%

Accelerated Perovskite Oxide Development for Thermochemical Energy Storage by a High‐Throughput Combinatorial Approach

Cai

Bektas

Wang

et al. 2023

Advanced Energy Materials

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are highly desirable. [2] The intermittent nature of renewable electricity generated from wind and solar requires considerable compensation from other energy sources, limiting their shares in the power grid. [3][4][5][6] Therefore, energy storage systems, which reduce the temporal and spatial imbalances between electricity generation and consumption, will play a critical role in accelerating the renewable transition. [7] Various energy storage approaches have been proposed to store different forms of energy, such as pumped hydro, batteries, compressed air, flywheels, and thermal energy storage (TES). [8,9] Among these, TES is considered to be one of the most cost-effective approaches to overcoming the intermittency of concentrated solar power. [10,11] In addition, TES can directly utilize the widely available heat resources from industrial processes such as steel mills, glass furnaces, and thermal power plants. [12,13] By 2022, TES has the secondhighest installed capacity of 234 GWh and is expected to reach 800 GWh by 2030. [14] TES technology can be further categorized into three different types, i.e., sensible thermal energy storage (STES), latent thermal energy storage (LTES), and thermochemical energy storage (TCES). At present, the only commercially available TES technology is molten salt-based STES. [15] However, the solidification issue at low temperatures and the instability at high temperatures are the main barriers to the molten salt-based STES. [16] The operating temperature window for molten salt-based STES is typically limited to 200-600 °C, leading to a small energy density of 36-180 kJ kg −1 . [17][18][19] LTES technology relies on the heat uptake and release of phase change materials (PCMs), which can achieve a two to three times larger energy density within a narrower temperature window. [20] To date, medium (100-300 °C)/ high (>300 °C) temperature LTES has yet to be implemented due to various technical challenges such as the high-capital cost, poor thermal conductivity, and equipment corrosion by the liquid PCMs. [21][22][23] Over the past decade, TCES, which stores thermal heat via reversible chemical reactions, has become an important research direction owing to its promise in wide operating temperature ranges and high energy storage density. [24,25] Moreover, since the energy is stored in a chemical form, TCES is capable of long-term, long-distance, and even seasonal energyThe structural and compositional flexibility of perovskite oxides and their complex yet tunable redox properties offer unique optimization opportunities for thermochemical energy storage (TCES). To improve the relatively inefficient and empirical-based approaches, a high-throughput combinatorial approach for accelerated development and optimization of perovskite oxides for TCES is reported here. Specifically, thermodynamic-based screening criteria are applied to the high-throughput density functional theory (DFT) simulation results of over 2000 A/B-site doped SrFeO 3−δ . 61 promising TCES candidates are selected based on th...

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Long-term Thermal Energy Storage Using Thermochemical Materials

Cited by 14 publications

References 8 publications

Discharge performance of blended salt in matrix materials for low enthalpy thermochemical storage

Discharge performance of blended salt in matrix materials for low enthalpy thermochemical storage

Water sorption-based thermochemical storage materials: A review from material candidates to manufacturing routes

Accelerated Perovskite Oxide Development for Thermochemical Energy Storage by a High‐Throughput Combinatorial Approach

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