Performance analysis of a reversible solid oxide cell system based on multi-scale hierarchical solid oxide cell modelling

Wang, Yuqing; Banerjee, Aayan; Wehrle, Lukas; Shi, Yixiang; Brandon, Nigel P.; Deutschmann, Olaf

doi:10.1016/j.enconman.2019.05.099

Cited by 35 publications

(9 citation statements)

References 43 publications

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“…A roundtrip efficiency of 53% was shown to be feasible by Wang et al. with hydrogen as a storage medium using 3‐D rSOC reactor model . It should be noted that these studies were based on rSOC reactors that are in early stages of development and not commercially available.…”

Section: Discussionmentioning

confidence: 99%

Electricity Arbitration and Sector Coupling with an Experimentally Validated Reversible Solid Oxide Cell Reactor System Connected to the Natural Gas Grid

2020

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Chemical energy storage offers an attractive solution for the arbitration of intermittent renewable electricity due to its higher energy storage capacity and storage duration. Reversible solid oxide cell (rSOC) reactor systems can efficiently operate in electrolysis operation to convert electrical energy to chemical energy or in fuel cell mode to convert chemical energy back to electrical energy. Natural gas is widely used in the chemical industry as a source of energy and hydrogen. Hence, storing electrical energy in the form of synthetic natural gas can couple electricity arbitration with chemical process industries. A methane‐based rSOC system concept for the purpose of energy storage and sector coupling is investigated. A process system analysis is performed based on an experimental study of a commercially available rSOC reactor. A validated rSOC reactor model is used to identify optimal system operating conditions. The proposed system concept achieves a chemical to electrical energy conversion efficiency of 57% and electrical to chemical energy conversion efficiency of 93% based on first law and lower heating value. A net electrical storage efficiency of 53% can be achieved.

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Section: Discussionmentioning

confidence: 99%

Electricity Arbitration and Sector Coupling with an Experimentally Validated Reversible Solid Oxide Cell Reactor System Connected to the Natural Gas Grid

2020

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“…The integrated multiscale model framework has been described in detail in my group's previous publications [3][4][5][6][7][8][9] and is only summarized here. In essence, the framework comprises of individual sub-models that provide continuum descriptions of the relevant physico-chemical phenomena at the multiple time and length scales involved.…”

Section: Modeling Methodologymentioning

confidence: 99%

“…While excess air ratios are a common mode of thermal management in SOC stacks, it is important to consider BoP components at the system scale for a fair projection of performance and cost as BoP costs increase with increasing excess air ratios. Thus, we used our multiscale SOC system model to evaluate the performance and reliability of a reversible SOC (rSOC) system [7].…”

Section: Modeling the Transients And Performance Of Reversible Solid ...mentioning

confidence: 99%

Integrated Multiscale Modeling of Solid Oxide Electrodes, Cells, Stacks, and Systems

Banerjee

2022

Chemie Ingenieur Technik

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An integrated multiscale multiphysics framework to model solid oxide electrochemical cell systems is discussed. The framework directly couples electrode, single cell, stack, and system models using a hierarchical approach with minimal loss of information across the scales. The success of the model framework in better understanding solid oxide cells at the microscale and the industrial scale showcases it as a powerful tool for the rational design and upscaling of novel lab-scale materials and devices for next-generation chemical and electrochemical technologies.

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“…The round-trip electrical efficiency is equal to 60%. Wang et al [12] designed a rSOC system based on steam electrolysis and a diathermic oil TES. Heat recovered in fuel cell mode is stored and later used for water evaporation in electrolysis mode.…”

Section: Literature Surveymentioning

confidence: 99%

Design and partial-load operation of a reversible Solid Oxide Cell system with molten salts thermal storage

Ficili

Colbertaldo

Guandalini

et al. 2022

J. Phys.: Conf. Ser.

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The increasing penetration of renewable energy sources in the electricity mix requires efficient storage solutions on the seasonal scale. Reversible Solid Oxide Cell (rSOC) systems are receiving increased attention as viable options to fulfil this requirement. In this work, a MW-scale rSOC system capable of working over a large operating window is studied via modelling on Aspen Plus®. To ease the thermal integration, a molten salt thermal storage is coupled to the system, enabling heat recovery in fuel cell mode, which is then exploited for water evaporation in electrolysis mode. The rSOC stack is designed to operate exothermically in the electrolysis mode at nominal load. In both modalities, the air mass flow rate is regulated to control the stack temperature, while limiting the in-out gradients within 100°C. At nominal load, the system achieves an electrical efficiency of 52% in fuel cell mode and of 87% in electrolysis mode. The operation at low partial loads, due to the decrease of the air flow rate, requires an additional high-temperature heat source to guarantee the heat integration. In this regard, the adoption of an electrical resistance in electrolysis mode and a hydrogen-fed combustor in fuel cell mode are selected as viable solutions to amplify the operating range of the system. As a results, the system can be operated down to the 30% of the stack nominal power in both modalities, where the system achieves an electric efficiency of 44% and 80% in fuel cell and electrolysis mode, respectively.

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Performance analysis of a reversible solid oxide cell system based on multi-scale hierarchical solid oxide cell modelling

Cited by 35 publications

References 43 publications

Electricity Arbitration and Sector Coupling with an Experimentally Validated Reversible Solid Oxide Cell Reactor System Connected to the Natural Gas Grid

Electricity Arbitration and Sector Coupling with an Experimentally Validated Reversible Solid Oxide Cell Reactor System Connected to the Natural Gas Grid

Integrated Multiscale Modeling of Solid Oxide Electrodes, Cells, Stacks, and Systems

Design and partial-load operation of a reversible Solid Oxide Cell system with molten salts thermal storage

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