Accelerating the reaction kinetics of K2CO3 through the addition of CsF in the view of thermochemical heat storage

Mazur, N. A.; Huinink, H.P.; Fischer, Hartmut; Donkers, Pim; Adan, O.C.G.

doi:10.1016/j.solener.2022.07.023

Cited by 14 publications

(5 citation statements)

References 30 publications

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“…As a result, the reaction kinetics is extremely slow when crossing the equilibrium line, while remaining inside the metastable zone. − This metastable behavior originates from a nucleation barrier at low supersaturations. Attempts were made to increase the kinetics and decrease the width of the metastable zone of potassium carbonate by doping with organic or inorganic dopants. , …”

Section: Introductionmentioning

confidence: 99%

“…Attempts were made to increase the kinetics and decrease the width of the metastable zone of potassium carbonate by doping with organic or inorganic dopants. 17,18 The focus of the literature available is on hydration (mechanisms), whereas only a few studies have yet been performed on the dehydration processes at play. Deshpande et al suggested that potassium carbonate dehydrates in two steps.…”

Section: Introductionmentioning

confidence: 99%

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Elucidating the Dehydration Pathways of K₂CO₃·1.5H₂O

Aarts,

Mazur,

Fischer

et al. 2024

Crystal Growth & Design

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Potassium carbonate sesquihydrate has previously been identified as a promising material for thermochemical energy storage. The hydration and cyclic behavior have been extensively studied in the literature, but detailed investigation into the different processes occurring during dehydration is lacking. In this work, a systematic investigation into the different dehydration steps is conducted. It is found that at higher temperatures, dehydration of pristine material occurs as a single process since water removal from the pristine crystals is difficult. After a single cycle, due to morphological changes, dehydration now occurs as two processes, starting at lower temperatures. The morphological changes open new pathways for water removal at the newly generated edges, corners, and steps of the crystal surface. The observations from this work may contribute to material design as they elucidate the relation between material structure and behavior.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Elucidating the Dehydration Pathways of K₂CO₃·1.5H₂O

Aarts,

Mazur,

Fischer

et al. 2024

Crystal Growth & Design

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“…Compared with conventional TES technology, the heat battery has a higher energy density (around 1.0 GJ/m 3 at particle bed level with 25% porosity) and neglectable storage loss. There have been many experiments and demonstrations for the HB available in the literature such as Mazur et al (2022) and Heat-Insyde (n.d.a).…”

Section: Introductionmentioning

confidence: 99%

Investigating the use cases of a novel heat battery in Dutch residential buildings

Wang,

Hoes,

Hensen

et al. 2023

Build. Simul.

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Recent advances in thermochemical storage technology have introduced a novel closed-loop thermal energy storage (TES) system, known as the heat battery (HB), which is believed to have great potential for aiding the energy transition in the built environment because of its higher energy density and neglectable storage loss compared to conventional TES systems. In order to investigate the potential use cases of the HB and provide practical feedback for its further development, this research employs a simulation-based approach to analyze its influence on building performance in various use cases within Dutch residential buildings. Stakeholders including the homeowner, distribution system operator, and district heating system operator are identified, and a preliminary list of use cases is defined based on relevant literature and input from the HB developer. The simulation approach is conducted to predict key performance indicators for each stakeholder. The Kruskal-Wallis test was employed to sort and scrutinize the simulation outcomes and discern the significance of each use case element. The findings demonstrated that the HB holds the potential to diminish both the operational energy cost by up to 30% for the homeowners and the peak heating load transmitted from the building to the district heating system.

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“…On the other hand, the inorganic PCMs have higher volumetric energy storage densities, better flame retardancy and slightly improved thermal conductivity [18]. Nanomaterials have proven convenient in improving; the thermal conductivity of PCMs, their phase change performance, retard flammability, and adjust phase change temperatures [19,20]. It was however, observed to affect the latent heat stockpile capacity of the PCM [21].…”

Section: Introductionmentioning

confidence: 99%

The heat transfer with nanomaterial enhanced phase change materials in different container shapes

Muzhanje

HASSAN

Hassan

2023

Journal of Energy Systems

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The heat transfer is studied during the melting and solidification of sp11 and sp24 phase change materials in different container shapes. The materials are further mixed with nano-alumina and nano CuO enhancements. We aim to identify the most favorable phase change material for free-cooling in summer and free-heating in winter. Ansys Fluent 20.2 is used to analyze the 2D models for the melting and solidification mechanisms of the phase change samples in cylindrical, square, rectangular, and elliptical-shaped capsules. The nanomaterial-enhanced phase change material improves the melting and solidification behavior over the base phase change material by as much as 9.8%. It is further observed that the nanomaterial-enhanced phase change material particularly in the rectangular-shaped containers has faster melting and solidification rates by over 43% compared to the others. The material sp24 with 4% nano-alumina in a rectangular profile has the shortest melting times ~70-100 mins, when the inlet temperatures are 313 and 318 K. The same material has the shortest solidification time of 426 mins, two times faster compared to the 928 mins observed with the cylindrical capsule under the same conditions. The Sp11 with the nano-alumina in a rectangular capsule also has a short melting time of 134 mins. The rectangular profile is found capable of achieving the highest temperature drop about 3.3 K during free cooling of inlet air using nano-enhanced sp24. A progress is realized in unmasking the potential of the thermal energy battery using hybrid geometry and nanomaterial enhancements.

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Accelerating the reaction kinetics of K2CO3 through the addition of CsF in the view of thermochemical heat storage

Cited by 14 publications

References 30 publications

Elucidating the Dehydration Pathways of K₂CO₃·1.5H₂O

Elucidating the Dehydration Pathways of K₂CO₃·1.5H₂O

Investigating the use cases of a novel heat battery in Dutch residential buildings

The heat transfer with nanomaterial enhanced phase change materials in different container shapes

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Accelerating the reaction kinetics of K2CO3 through the addition of CsF in the view of thermochemical heat storage

Cited by 14 publications

References 30 publications

Elucidating the Dehydration Pathways of K2CO3·1.5H2O

Elucidating the Dehydration Pathways of K2CO3·1.5H2O

Investigating the use cases of a novel heat battery in Dutch residential buildings

The heat transfer with nanomaterial enhanced phase change materials in different container shapes

Contact Info

Product

Resources

About

Elucidating the Dehydration Pathways of K₂CO₃·1.5H₂O

Elucidating the Dehydration Pathways of K₂CO₃·1.5H₂O