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Journal of the Japan Institute of Energy Vol. 103 (2024), No. 4

ISIJ International
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ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753
Publisher: The Japan Institute of Energy

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Journal of the Japan Institute of Energy Vol. 103 (2024), No. 4

Installation Potentials of Solid Oxide Fuel Cell Co-generation for Commercial Buildings in Japan

Ryo ABE, Atsushi AKISAWA, Takashi IKEGAMI

pp. 25-33

Abstract

This study focuses on solid oxide fuel cell (SOFC) co-generation systems for commercial buildings. The objectives of this study are to investigate the potentials of SOFC installation into various commercial buildings under regional conditions, and to estimate geographical distribution of SOFC potentials over Japan. An optimization model minimizing the system cost was employed to analyze optimal SOFC units for each building type corresponding to 8 climate regions of Japan. The results indicate that the difference among regions is small. The study estimated the potential SOFC installed in every municipal areas based on the statistics of floor areas of each building type or GIS data and optimal SOFC units derived by the model. Furthermore the acceptance rate in terms of payback year was taken into account to estimate the feasible installation capacity of SOFC from the potential SOFC. Consequently the potential and the feasible installation of SOFC in whole Japan were estimated to be 16 GW and 5 GW, respectively, when the unit cost of SOFC is assumed to be 500 k¥/kW. Stores have the maximum share of approximately 50-70% in terms of the capacity, followed by hospitals and hotels. It is predicted that the primary energy consumption can be decreased by 220PJ, which is 19% reduction.

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Installation Potentials of Solid Oxide Fuel Cell Co-generation for Commercial Buildings in Japan

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