Storing solar energy in continuously moving redox particles – Experimental analysis of charging and discharging reactors

Tescari, Stefania; Neumann, Nicole; Sundarraj, Pradeepkumar; Moumin, Gkiokchan; Duarte, Juan Pablo Rincon; Linder, Marc; Roeb, Martin

doi:10.1016/j.apenergy.2021.118271

Cited by 16 publications

(3 citation statements)

References 36 publications

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“…In order to enhance the heat transfer rate, an internally circulating fluidized bed has been developed as shown in Figure 10c (Bellan et al, 2018, 2019). Fe‐doped manganese oxide redox material has been developed for TCS (Al‐Shankiti et al, 2019; Gokon, Yawata, et al, 2019; Tescari et al, 2022; Wokon et al, 2017, 2017a). Using TGA (thermogravimetric analyses) and DSC (differential scanning calorimetry), redox performance of Fe‐doped Mn 2 O 3 /Mn 3 O 4 were experimentally investigated.…”

Section: Particle Reactors For Tcs Applicationsmentioning

confidence: 99%

“…(Carrillo et al, 2019). Fe-doping has been found as one of the promising ways to enhance the TCS characteristics of Mn 2 O 3 / Mn 3 O 4 redox couple significantly (Al-Shankiti et al, 2019;Tescari et al, 2022;Wokon et al, 2017Wokon et al, , 2017a. The key advantages of Fe incorporation in Mn oxides are higher energy storage density, faster oxidation rates, which in turn implied more cycling stability and narrowing thermal hysteresis.…”

Section: Manganese Oxidesmentioning

confidence: 99%

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A review on high‐temperature thermochemical heat storage: Particle reactors and materials based on solid–gas reactions

Bellan

Kodama

Gokon

et al. 2022

WIREs Energy & Environment

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In order to produce electricity beyond insolation hours and supply to the electrical grid, thermal energy storage (TES) system plays a major role in CSP (concentrated solar power) plants. Current CSP plants use molten salts as both sensible heat storage media and heat transfer fluid, to operate up to 560 C. To meet the future high operating temperature and efficiency, thermochemical storage (TCS) emerged as an attractive alternatives for next generation CSP plants. In these systems, the solar thermal energy is stored by endothermic reaction and subsequently released when the energy is needed by exothermic reversible reaction. This review compares and summarizes different thermochemical storage systems that are currently being investigated, especially TCS based on metal oxides. Various experimental, numerical, and technological studies on the development of particle reactors and materials for hightemperature TCS applications are presented. Advantages and disadvantages of different types heat storage systems (sensible, latent, and thermochemical), and particle receivers (stacked, fluidized, and entrained), have been discussed and reported.

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Section: Particle Reactors For Tcs Applicationsmentioning

confidence: 99%

Section: Manganese Oxidesmentioning

confidence: 99%

A review on high‐temperature thermochemical heat storage: Particle reactors and materials based on solid–gas reactions

Bellan

Kodama

Gokon

et al. 2022

WIREs Energy & Environment

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“…Thus, perovskites and their redox reaction can help to increase storage capacity. These materials have been considered in different solar applications as storage and/or heat transfer media [46][47][48][49][50]. Jackson et al [46] investigated the use of Sr-doped CaMnO 3−δ in comparison to inert particles and other oxides in a solar particle application with a supercritical CO 2 cycle.…”

Section: Introductionmentioning

confidence: 99%

Non-Stoichiometric Redox Thermochemical Energy Storage Analysis for High Temperature Applications

et al. 2022

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Concentrated solar power is capable of providing high-temperature process streams to different applications. One promising application is the high-temperature electrolysis process demanding steam and air above 800 °C. To overcome the intermittence of solar energy, energy storage is required. Currently, thermal energy at such temperatures can be stored predominately as sensible heat in packed beds. However, such storage suffers from a loss of usable storage capacity after several cycles. To improve such storage, a one-dimensional packed bed thermal energy storage model using air as a heat transfer medium is set up and used to investigate and quantify the benefit of the incorporation of different thermochemical materials from the class of perovskites. Perovskites undergo a non-stoichiometric reaction extension which offers the utilization of thermochemical heat over a larger temperature range. Three different perovskites were considered: SrFeO3, CaMnO3 and Ca0.8Sr0.2MnO3. In total, 15 vol% of sensible energy storage has been replaced by one perovskite and different positions of the reactive material are analyzed. The effect of reactive heat on storage performance and thermal degradation over 15 consecutive charging and discharging cycles is studied. Based on the selected variation and reactive material, storage capacity and useful energy capacity are increased. The partial replacement close to the cold inlet/outlet of the storage system can increase the overall storage capacity by 10.42%. To fully utilize the advantages of thermochemical material, suitable operation conditions and a fitting placement of the material are vital.

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Design and evaluation of a dilute flow particle-to-air heat exchanger for energy storage applications

Siefering,

Umer,

Stechel

et al. 2025

Applied Thermal Engineering

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Storing solar energy in continuously moving redox particles – Experimental analysis of charging and discharging reactors

Cited by 16 publications

References 36 publications

A review on high‐temperature thermochemical heat storage: Particle reactors and materials based on solid–gas reactions

A review on high‐temperature thermochemical heat storage: Particle reactors and materials based on solid–gas reactions

Non-Stoichiometric Redox Thermochemical Energy Storage Analysis for High Temperature Applications

Design and evaluation of a dilute flow particle-to-air heat exchanger for energy storage applications

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