On-sun testing of Miscibility Gap Alloy thermal storage

Copus, Mark; Fraser, Benjamin; Reece, Roger; Hands, Stuart; Cuskelly, Dylan; Sugo, Heber; Reed, Samuel; Bradley, James; Post, Alexander; Kisi, Erich H.

doi:10.1016/j.solener.2018.11.048

Cited by 13 publications

(5 citation statements)

References 23 publications

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“…An innovative approach to avoid high-temperature packaging problems is based on using the thermal effect of solid-solid metallic PCMs (Fe-based), which present lower latent heat than solid-liquid transformations (below 60 kJ/kg) [38,106]. Another solution is the miscibility gap binary alloys (MGA), where one of the alloy components melts (high latent heat) while the other stays solid as a continuous, dense, thermally conductive matrix [50][51][52]. Sugo et al [48,49,107] proposed an MGA system as high energy-density thermal storage material.…”

Section: High-temperature Mpcms Tm > 300°cmentioning

confidence: 99%

“…In the last years, much of the research efforts in phase change materials have mainly focused on the characterization of thermophysical properties of organic and salt hydrate; for metallic materials, the data found in the literature is incomplete and discrepant [46,47]. Recently, new promising utilizations of metals and alloys for thermal energy storage has appeared in different research areas: miscibility gap alloys [48][49][50][51][52][53][54][55][56], metal-organic framework and shape-stabilized PCMs [57][58][59][60][61], encapulation [62][63][64][65][66][67][68][69].The present work aims to provide an extensive and detailed compilation and analysis of the thermophysical properties of metals and alloys as phase change materials. The information presented includes the fundamental thermophysical properties, the temperature dependence of critical properties from the engineering design point of view, a summary of potential applications, and the main challenges of metallic PCMs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A review of metallic materials for latent heat thermal energy storage: Thermophysical properties, applications, and challenges

Costa

Kenisarin

2022

Renewable and Sustainable Energy Reviews

106

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Section: High-temperature Mpcms Tm > 300°cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A review of metallic materials for latent heat thermal energy storage: Thermophysical properties, applications, and challenges

Costa

Kenisarin

2022

Renewable and Sustainable Energy Reviews

106

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“…The TES system is using an alloy (miscibility gap alloy, MGA) composed of graphite and aluminum and developed by a partner MGA Thermal. The MGAs are commonly proposed as a novel type of TES material with some unique properties such as macroscopically solid materials safely embedding PCM, providing combination of sensible and latent heat and with high thermal conductivity [66,67].…”

Section: Rankine Cycle Systemsmentioning

confidence: 99%

Review of Carnot Battery Technology Commercial Development

et al. 2022

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Carnot batteries are a quickly developing group of technologies for medium and long duration electricity storage. It covers a large range of concepts which share processes of a conversion of power to heat, thermal energy storage (i.e., storing thermal exergy) and in times of need conversion of the heat back to (electric) power. Even though these systems were already proposed in the 19th century, it is only in the recent years that this field experiences a rapid development, which is associated mostly with the increasing penetration of intermittent cheap renewables in power grids and the requirement of electricity storage in unprecedented capacities. Compared to the more established storage options, such as pumped hydro and electrochemical batteries, the efficiency is generally much lower, but the low cost of thermal energy storage in large scale and long lifespans comparable with thermal power plants make this technology especially feasible for storing surpluses of cheap renewable electricity over typically dozens of hours and up to days. Within the increasingly extensive scientific research of the Carnot Battery technologies, commercial development plays the major role in technology implementation. This review addresses the gap between academia and industry in the mapping of the technologies under commercial development and puts them in the perspective of related scientific works. Technologies ranging from kW to hundreds of MW scale are at various levels of development. Some are still in the stage of concepts, whilst others are in the experimental and pilot operations, up to a few commercial installations. As a comprehensive technology review, this paper addresses the needs of both academics and industry practitioners.

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“…Initial MGA were made from two metals (Al-Sn, Fe-Cu, Fe-Mg, etc. ); however, recently a number of graphite matrix MGA have been manufactured and tested in relatively arduous conditions [15]. These systems include C-Zn [15], C-Al and C-(Al-Si) [16,17], C-Mg and C-Cu [13].…”

Section: Introductionmentioning

confidence: 99%

“…The performance of these thermal storage materials under the test conditions has shown considerable promise for a number of practical applications including building and district heating as well as the purpose for which they were originally developed, concentrated solar thermal power generation (CSP). In practical terms, these MGA have survived more than 200 charge-discharge cycles [17], survived direct solar irradiation [15] and survived a combination of direct irradiation with energy extraction using an embedded water pipe [18]. One minor limitation of the materials is that, above 400 °C, they require protection from oxidation through the use of a protective atmosphere (typically N, Ar or CO 2 ).…”

Section: Introductionmentioning

confidence: 99%