Title: Exergoeconomic analysis of a reversible solid oxide cell-based power-to-syngas-to-power system

Authors: Muiz Adekunle Agbaje; Ali Volkan Akkaya

Addresses: Department of Mechanical Engineering, Yildiz Technical University, Istanbul 34349, Turkey ' Department of Mechanical Engineering, Yildiz Technical University, Istanbul 34349, Turkey

Abstract: This study investigates exergoeconomic performance of a power-to-syngas-to-power system based on a reversible solid oxide cell (ReSOC). Specific exergy cost (SPECO) approach is used for developing thermoeconomic model and power to syngas (SOEC) and syngas to power (SOFC) modes of ReSOC system are analysed. The results showed a capital cost rate of $9.25/h for the SOFC mode and $9.14/h for the SOEC mode of operation. The combined capital cost of storage tanks and ReSOC stacks accounts for approximately 80% of overall capital costs in both modes. Additionally, the cost of electricity significantly influences exergoeconomic performance. SOEC mode had a higher system exergy cost rate of $14.27/h, and SOFC mode had an exergoeconomic performance of 0.67. In conclusion, the exergoeconomic analysis has revealed the cost rates in the ReSOC system. These results would guide in determining the most effective points of cost reduction to improve economic performance of ReSOC-based system.

Keywords: cost analysis; energy storage; exergoeconomics; reversible solid oxide cell; SPECO; system analysis.

DOI: 10.1504/IJEX.2023.131904

International Journal of Exergy, 2023 Vol.41 No.3, pp.312 - 336

Received: 17 Aug 2022
Received in revised form: 26 Mar 2023
Accepted: 27 Mar 2023
Published online: 04 Jul 2023 *

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