Preparation and characterization of NaNO3 shape-stabilized phase change materials (SS-PCMs) based on anorthite ceramic and cordierite ceramic for solar energy storage

Liu, Jicheng; Xu, Jiamei; Su, Zijian; Zhang, Yuanbo; Jiang, Tao

doi:10.1016/j.solmat.2022.112114

Cited by 18 publications

(2 citation statements)

References 43 publications

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“…Phase change materials (PCMs) are extensively exploited in LHTES in view of not only high latent heat but trivial temperature changes during the phase change processes. Moreover, PCMs are widely employed in solar energy systems 4 , buildings 5,6 , desalination 7 , and thermal management of electronic devices 8 . However, the inherent defect of PCMs, low thermal conductivity, prolongs their melting (charge) and solidification (discharge) processes, restricting their applications.…”

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confidence: 99%

Multi-objective optimization of multiple droplet impacts on a molten PCM using NSGA-II optimizer and artificial neural network

Faghiri

Poureslami

Aria

et al. 2023

Sci Rep

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Embracing an interaction between the phase change material (PCM) and the droplets of a heat transfer fluid, the direct contact (DC) method suggests a cutting-edge solution for expediting the phase change rates of PCMs in thermal energy storage (TES) units. In the direct contact TES configuration, when impacting the molten PCM pool, droplets evaporate, provoking the formation of a solidified PCM area (A). Then, they reduce the created solid temperature, leading to a minimum temperature value (Tmin). As a novelty, this research intends to maximize A and minimize Tmin since augmenting A expedites the discharge rate, and by lowering Tmin, the generated solid is preserved longer, resulting in a higher storage efficacy. To take the influences of interaction between droplets into account, the simultaneous impingement of two ethanol droplets on a molten paraffin wax is surveyed. Impact parameters (Weber number, impact spacing, and the pool temperature) govern the objective functions (A and Tmin). Initially, through high-speed and IR thermal imaging, the experimental values of objective functions are achieved for a wide range of impact parameters. Afterward, exploiting an artificial neural network (ANN), two models are fitted to A and Tmin, respectively. Subsequently, the models are provided for the NSGA-II algorithm to implement multi-objective optimization (MOO). Eventually, utilizing two different final decision-making (FDM) approaches (LINMAP and TOPSIS), optimized impact parameters are attained from the Pareto front. Regarding the results, the optimum amount of Weber number, impact spacing, and pool temperature accomplished by LINMAP and TOPSIS procedures are 309.44, 2.84 mm, 66.89 °C, and 294.98, 2.78 mm, 66.89 °C, respectively. This is the first investigation delving into the optimization of multiple droplet impacts for TES applications.

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Section: List Of Symbolsmentioning

confidence: 99%

Multi-objective optimization of multiple droplet impacts on a molten PCM using NSGA-II optimizer and artificial neural network

Faghiri

Poureslami

Aria

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Despite the many advantages of PCM-based latent heat storage technology, there are two problems that limit its wide application, namely low thermal conductivity and leakage, which result in that their practical applications often fail to achieve the expected results [5][6][7]. At present, strategies for improving the thermal conductivity of phase change materials mainly focus on adding thermally conductive fillers with good thermal conductivity (e.g., metal-based thermally conductive fillers [8,9], carbon-based thermally conductive fillers [10,11], ceramic-based thermally conductive fillers [12,13], etc.…”

Section: Introductionmentioning

confidence: 99%

Review on Porous Ceramic‐Based Form‐Stable Phase Change Materials: Preparation, Enhance Thermal Conductivity, and Application

Chen,

Sun,

Jiang

et al. 2023

ChemBioEng Reviews

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A phase change material is an ideal energy storage material with huge latent heat and nearly constant phase change temperature, but there are serious problems in application such as leakage and low thermal conductivity. Porous ceramic matrixes are widely used in phase change material packaging because of their controllable porosity, large specific surface area, and high thermal conductivity. This paper introduces the preparation of porous ceramics and encapsulation of form‐stable phase change materials (FSPCMs) based on porous ceramics, thermal conductivity enhancement and other aspects of the comb, in addition, the applications of porous ceramic‐based FSPCMs in industrial waste heat recovery, temperature regulation of buildings, solar energy collection and storage, and battery thermal management system are summarized, in order to provide reference for the performance optimization of porous ceramic‐based FSPCMs and explore new preparation methods, finally, the challenges and future development of the FSPCMS are summarized. Porous ceramic‐based FSPCMs are expected to make major breakthroughs in the future to solve the increasingly serious energy problems.

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Stable and Versatile Pd Precursors for the Preparation of Robust Pd Catalysts Under Continuous‐Flow

Sakurada,

Kobayashi,

Abe

et al. 2024

ChemSusChem

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The chemical and engineering communities require the development of versatile precursors that can be used to synthesize robust catalysts to achieve global sustainability. To meet this demand, we developed a new Pd precursor for incorporating fine Pd metal into supports in a highly efficient manner. An atmospherically stable Pd precursor (Pd‐80) was prepared by the thermally promoted aerobic oxidation of tetrakis(triphenylphosphine)palladium. The physical properties of Pd‐80 were investigated using NMR spectroscopy, SEM, XPS, solvent‐relaxation NMR spectroscopy, and dynamic light scattering (DLS) experiments. We also prepared a cordierite‐supported Pd catalyst (Pd/cordierite) by stirring Pd‐80 and cordierite powder in chloroform at room temperature. Pd/cordierite selectively catalyzes the hydrogenation of various reducible functional groups, including alkynes, azides, nitro groups, olefins, CO2Bn, N‐Cbz, O‐Bn, aromatic ketones, and styrene oxide, in continuous‐flow hydrogenation reactions. The Pd/cordierite‐catalyzed continuous‐flow hydrogenation of nitrobenzene derivatives afforded the corresponding anilines, with catalyst activity maintained for over 250 h of continuous operation and a turnover number (TON) of 61,090 recorded.

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Preparation and characterization of NaNO3 shape-stabilized phase change materials (SS-PCMs) based on anorthite ceramic and cordierite ceramic for solar energy storage

Cited by 18 publications

References 43 publications

Multi-objective optimization of multiple droplet impacts on a molten PCM using NSGA-II optimizer and artificial neural network

Multi-objective optimization of multiple droplet impacts on a molten PCM using NSGA-II optimizer and artificial neural network

Review on Porous Ceramic‐Based Form‐Stable Phase Change Materials: Preparation, Enhance Thermal Conductivity, and Application

Stable and Versatile Pd Precursors for the Preparation of Robust Pd Catalysts Under Continuous‐Flow

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