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Influence of filling ratio and porosity upon melting performance was investigated. • The partially filling could economically improve energy storage efficiency. • Upon saving 5% foam, a reduction of 15.7% in complete melting time was achieved. • An optimal filling ratio
Thermal energy storage (TES) systems store heat or cold for later use and are classified into sensible heat storage, latent heat storage, and thermochemical heat storage. Sensible heat storage systems raise the temperature of a material to store heat.
Melting behavior of the latent heat thermal energy storage unit with fins and graded metal foam Appl. Therm. Eng., 198 ( 2021 ), Article 117462 View PDF View article View in Scopus Google Scholar
Abstract. In this study a novel encapsulated phase change material (PCM)-metal foam hybrid system is proposed for energy storage applications. The idea is to improve the melting rate of PCM in
Similar to other energy storage technologies like lithium-ion battery, there also exists a trade-off between power density and energy density for phase change latent heat storage. Herein, a series of sample thicknesses are set to investigate the relationship between areal capacity and average power density ( Fig. 6 a ).
The melting process of PCM energy storage unit enhanced with downward stepped fins is generally higher than the upward ones. This is mainly due to the effect of natural convection. The transition time from fast to slow melting occurs when the PCM in the upper half of the cavity is completely melted.
In this paper, a combined passive graded metal foam and active mechanical rotation strategy is proposed to simultaneously solve the problem of slow melting rate and non-uniform phase change problem of the latent heat thermal energy storage (LHTES) technology.
Hence, researchers introduced energy storage systems which operate during the peak energy harvesting time and deliver the stored energy during the high-demand hours. Large-scale applications such as power plants, geothermal energy units, nuclear plants, smart textiles, buildings, the food industry, and solar energy capture and
Among different types of electrochemical energy-storage devices, liquid metal batteries offering both high energy densities and high power densities stand out for stationary storage. (6,7) Different from solid-state counterparts, liquid metal electrodes are immune to structural cracks, and the intrinsic dendrite growth of alkali metals can also be
This paper presents an innovative approach of utilizing electric arc furnace (EAF) slags in value-added applications, particularly as storage media for high-tem Kholoud M. Al Naimi, Jean-Francois Hoffmann, Khalid Al Ali, Nicolas Calvet; Influencing parameters on the sintering process of steel slag-based ceramics for high-temperature
Heat transfer enhancement for thermal energy storage using metal foams embedded within phase change materials (PCMs) Sol. Energy, 84 ( 2010 ), pp. 1402 - 1412 View PDF View article View in Scopus Google Scholar
Phase change materials provide desirable characteristics for latent heat thermal energy storage by keeping the high energy density and quasi isothermal working temperature. Along with this, the most promising phase change materials, including organics and inorganic salt hydrate, have low thermal conductivity as one of the main drawbacks.
In this paper, a combined passive graded metal foam and active mechanical rotation strategy is proposed to simultaneously solve the problem of slow
Abstract. Phase change heat storage offers a practical solution to address the instability and intermittency of solar energy. However, the thermal conductivity of heat storage medium (phase change material) is low, which hinders its large-scale application. Metal foam and fins have proven effective in enhancing heat transfer performance. This
This article gives an overview of molten salt storage in CSP and new potential fields for decarbonization such as industrial
Fin-metal foam hybrid outperforms single component regarding thermal energy storage. • A reduction of 83.35% in complete melting time is achieved for the hybrid structure. • Transient temperature response is maximized by 529.1% by the hybrid structure. •
Melting enhancement in triplex-tube latent heat energy storage system using nanoparticles-metal foam combination Applied energy, 191 ( 2017 ), pp. 22 - 34 View PDF View article View in Scopus Google Scholar
The melting patterns of a gallium inside an energy storage system were analyzed in a range of the Rayleigh numbers of 10 8 ≤ Ra ≤ 10 10. It was found that the
Melting enhancement in triplex-tube latent heat energy storage system using nanoparticles-metal foam combination Appl. Energy, 191 ( 2017 ), pp. 22 - 34 View PDF View article View in Scopus Google Scholar
Thermal energy storage has been attracting more and more attentions due mainly to its distinctive features on peak-load shifting capability for systems with
Cold thermal energy storage can shave this peak power load by storing cold thermal energy during off-peak hours for later use. Jourabian et al. [28] numerically investigated the effect of the porosity of nickel–steel
Melting effect in triplex-tube thermal energy storage system using multiple PCMs-porous metal foam combination J. Energy Storage, 43 ( 2021 ), Article 103154, 10.1016/j.est.2021.103154 Google Scholar
PCM melting process in an energy storage chamber with porous metal foam gradient and discrete strip fins is examined. • A 42 % improvement in the melting process can be fund for he parabolic state of TM1 and TM4. • The highest thermal performance and >90 %
In this section, the authors compile the thermophysical properties and relevant studies published for MPCMs; the metallic PCMs were classified depends on the melting temperature. Fig. 1 shows the specific latent heat of fusion and volumetric heat of fusion of pure metallic elements, and Fig. 2 the thermal conductivity and the specific heat.
Numerical results demonstrate that the LHTES units strengthened by the finned metal foam with graded porosity achieve the shortest melting time and largest thermal energy storage rate (TESR). The graded porous structure reduces thermal resistance, rotation enhances flow and heat transfer inside the container, and the fins expand the heat source area.
Thermal energy storage is one of the most promising alternatives to improve the utilisation of low-grade industrial waste heat, Melting and solidification of a pure metal on a vertical wall J. Heat Transf., 108 (1986), pp. 174-181, 10.1115/1.3246884 View in [29],
Melting and energy storage characteristics of macro-encapsulated PCM-metal foam system Int. J. Heat Mass Transf., 182 ( janv. 2022, ), Article 121993, 10.1016/j.ijheatmasstransfer.2021.121993 View PDF View article View in
A thermal energy storage (TES) system can significantly improve industrial energy efficiency and eliminate the need for additional energy supply in
The storage tank contains 6 000 kg of paraffin PCM, of which the thermal properties, as measured with a Differential Scanning Calorimeter (DSC), were: melting temperature range of 48 - 60 C and
Liquid metal thermal energy storage systems are capable of storing heat with a wide temperature range and have, thus, been investigated for liquid metal
Thermophysical characterization of a by-product from the steel industry to be used as a sustainable and low-cost thermal energy storage material[J] Energy, 89 ( 2015 ), pp. 601 - 609, 10.1016/j.energy.2015.05.153
Heat transfer area expansion is possible by installing various fins [24], [25] or other porous media such as metal foam [26], [27]. Accelerated melting of PCM in energy storage systems via novel configuration of
Phase change materials (PCMs) having a large latent heat during solid-liquid phase transition are promising for thermal energy storage applications. However, the relatively low thermal conductivity of the majority of promising PCMs (<10 W/ (m ⋅ K)) limits the power density and overall storage efficiency.
Results show that the porosity, the material of the metal foam, and the thickness of the metal foam are the main factors affecting the melting rate and heat
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