A robust thermal-energy-storage property associated with electronic phase transitions for quadruple perovskite oxides

2020 ◽  
Vol 56 (41) ◽  
pp. 5500-5503 ◽  
Author(s):  
Tasuku Uchimura ◽  
Ikuya Yamada
Keyword(s):  
Rare Earth ◽  
Phase Transitions ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Rare Earth Metals ◽  
Perovskite Oxides ◽  
Electronic Phase ◽  
Energy Storage Property ◽  
Storage Property

Quadruple perovskites RCu3Fe4O12 (R: rare-earth metals) exhibit large latent-heat capacities with almost constant transition entropies at various operating temperatures.

Solid-Solid Phase Transitions for Thermal Energy Storage

1981 ◽  
pp. 309-324 ◽  
Author(s):  
V. Busico ◽  
P. Corradini ◽  
M. Vacatello ◽  
F. Fittipaldi ◽  
L. Nicolais
Keyword(s):  
Phase Transitions ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Solid Phase

Numerical recipes for successfully modeling the phase transitions in thermal energy storage adsorption systems

2019 ◽  
Vol 1 (2) ◽  
pp. e42 ◽  
Author(s):  
Marco S. Fernandes ◽  
Gonçalo J. V. N. Brites ◽  
José J. Costa ◽  
Adélio R. Gaspar ◽  
Vítor A. F. Costa
Keyword(s):  
Phase Transitions ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Adsorption Systems

scholarly journals The Use of Capsuled Paraffin Wax in Low-Temperature Thermal Energy Storage Applications: An Experimental and Numerical Investigation

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 538
Author(s):  
Agnieszka Ochman ◽  
Wei-Qin Chen ◽  
Przemysław Błasiak ◽  
Michał Pomorski ◽  
Sławomir Pietrowicz
Keyword(s):  
Phase Transitions ◽  
Energy Storage ◽  
Low Temperature ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Operating Conditions ◽  
Paraffin Wax ◽  
Temperature Phase ◽  
Maximum Heat

The article deals with the experimental and numerical thermal-flow behaviours of a low-temperature Phase Change Material (PCM) used in Thermal Energy Storage (TES) industrial applications. The investigated PCM is a composition that consists of a mixture of paraffin wax capsuled in a melamine-formaldehyde membrane and water, for which a phase change process occurs within the temperature range of 4 °C to 6 °C and the maximum heat storage capacity is equal to 72 kJ/kg. To test the TES capabilities of the PCM for operating conditions close to real ones, a series of experimental tests were performed on cylindrical modules with fixed heights of 250 mm and different outer diameters of 15, 22, and 28 mm, respectively. The module was tested in a specially designed wind tunnel where the Reynolds numbers of between 15,250 to 52,750 were achieved. In addition, a mathematical model of the analysed processes, based on the enthalpy porosity method, was proposed and validated. The temperature changes during the phase transitions that were obtained from the numerical analyses in comparison with the experimental results have not exceeded 20% of the relative error for the phase change region and no more than 10% for the rest. Additionally, the PCM was examined while using a Scanning Electron Microscope (SEM), which indicated no changes in the internal structure during phase transitions and a homogeneous structure, regardless of the tested temperature ranges.

Phase transitions and electrical conduction in thermal energy storage compound (n-C12H25NH3)2CdCl4

2014 ◽  
Vol 88 (5) ◽  
pp. 445-460 ◽  
Author(s):  
Mohamed Mahmoud Abdelkader ◽  
Aboud Ibrahim Aboud ◽  
Wafia Mohamed Gamal
Keyword(s):  
Phase Transitions ◽  
Energy Storage ◽  
Thermal Energy ◽  
Electrical Conduction ◽  
Thermal Energy Storage
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