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Title: Numerical prediction of system round-trip efficiency and feasible operating conditions of small-scale solid oxide iron-air battery
Authors: Ohmori, Hiroko
Iwai, Hiroshi
Itakura, Kotaro
Saito, Motohiro
Yoshida, Hideo
Author's alias: 岩井, 裕
齋藤, 元浩
吉田, 英生
Keywords: Rechargeable metal–air battery
Solid oxide electrochemical cell
Redox metal
System round-trip efficiency
Operating conditions
Issue Date: 31-Mar-2016
Publisher: Elsevier
Journal title: Journal of Power Sources
Volume: 309
Start page: 160
End page: 168
Abstract: A simulation model of a small-scale solid oxide iron-air battery system was developed to clarify its fundamental characteristics and feasibility from the view point of energy efficiency. The energy flow in one cycle of charge/discharge operations was evaluated under a quasi-state assumption with 0-dimensional models of the system components, i.e., a solid oxide electrochemical cell, an iron (Fe) box and heat exchangers. Special care was taken when considering thermal aspects; not only a simple system but also a more complicated system with thermal recirculation by three heat exchangers was investigated. It was found that the system round-trip efficiency reaches 61% under the base conditions in this study. The results also show that several limitations exist for the operation parameters and conditions in view of practical applications. In particular, higher and lower limits exist for the fuel and air utilization factors under which the system operates effectively because of constraints such as the maximum allowable fuel-blower temperature and no heat input during the discharge operation.
Rights: © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
The full-text file will be made open to the public on 31 March 2018 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1016/j.jpowsour.2016.01.090
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