PSI - Issue 65

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2024) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2024) 000–000

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ScienceDirect

Procedia Structural Integrity 65 (2024) 97–101

The 17th International Conference on MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS 2023) Hydrodynamic features of processes in a solid oxide electrolyzer Golodnova A.I. a,b , Erpalov M.V. a,b * a The Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 20 Akademicheskaya Str, Ekaterinburg, Russian Federation b Ural Federal University, Mira St., 19, Ekaterinburg, Russian Federation The 17th International Conference on MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS 2023) Hydrodynamic features of processes in a solid oxide electrolyzer Golodnova A.I. a,b , Erpalov M.V. a,b * a The Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, 20 Akademicheskaya Str, Ekaterinburg, Russian Federation b Ural Federal University, Mira St., 19, Ekaterinburg, Russian Federation This paper considers the hydrodynamic features of the operation of a combined electrolysis unit for H2O and CO2. The relationship between the geometric characteristics of gas channels and pressure during operation of a solid oxide electrolyzer (SOE) is assessed, including the size and number of channels (they can be different depending on the configuration of the gas channels), since they depend on the size of the interconnector plates and the design of the planar element as a whole. It is noted that the above parameters are associated with the technological parameters of the electrochemical unit. A mathematical model is compiled based on the selected mathematical dependencies for a quantitative assessment of the effect of channel sizes on pressure drop. An analysis of the data obtained for a single element with a square cross section of 5x5 cm is carried out. © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers Abstract Abstract This paper considers the hydrodynamic features of the operation of a combined electrolysis unit for H2O and CO2. The relationship between the geometric characteristics of gas channels and pressure during operation of a solid oxide electrolyzer (SOE) is assessed, including the size and number of channels (they can be different depending on the configuration of the gas channels), since they depend on the size of the interconnector plates and the design of the planar element as a whole. It is noted that the above parameters are associated with the technological parameters of the electrochemical unit. A mathematical model is compiled based on the selected mathematical dependencies for a quantitative assessment of the effect of channel sizes on pressure drop. An analysis of the data obtained for a single element with a square cross section of 5x5 cm is carried out. © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers Keywords:Solid oxide electrolyzer, pressure, channel length, pressure drop. Peer-review under responsibility of MRDMS 2023 organizers Keywords:Solid oxide electrolyzer, pressure, channel length, pressure drop.

1. Introduction 1. Introduction

Recent research papers by Wilberforce, T., (2017) are related to the development of renewable energy technologies. This is due to the rising cost and the negative impact of fossil fuels on the environment. Solid oxide electrolyzers (TPO) can convert chemical energy into electrical energy with high efficiency. This technology has many advantages, such as high efficiency and good scalability for commercial purposes. At the same time, Recent research papers by Wilberforce, T., (2017) are related to the development of renewable energy technologies. This is due to the rising cost and the negative impact of fossil fuels on the environment. Solid oxide electrolyzers (TPO) can convert chemical energy into electrical energy with high efficiency. This technology has many advantages, such as high efficiency and good scalability for commercial purposes. At the same time,

* Corresponding author. Tel.: +7-343-374-5089; fax: +7-343-374-5089. E-mail address: info@ihte.ru * Corresponding author. Tel.: +7-343-374-5089; fax: +7-343-374-5089. E-mail address: info@ihte.ru

2452-3216 © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers 2452-3216 © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers 10.1016/j.prostr.2024.11.015