Overall
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received November 18, 2025
Accepted June 15, 2026
Available online October 25, 2026
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Most Cited
Thermodynamic and Emission Performance of SOFC-GT Hybrids with Dual Recirculation Strategies
https://doi.org/10.1007/s11814-026-00777-1
Abstract
Solid oxide fuel cell–gas turbine (SOFC-GT) hybrid systems offer high efficiency and low emissions for sustainable power
generation. This study compares two SOFC-GT configurations with different exhaust gas recirculation strategies: SOFCGT-RAN
(anode recirculation) and SOFC-GT-RAB (afterburner recirculation). Both systems were modeled in Aspen Plus
using methane with 10% pre-reforming. Parametric analyses were conducted to examine the influence of fuel utilization,
steam-to-carbon ratio, SOFC operating temperature, and recirculation ratio on system performance. The results show that
SOFC-GT-RAN consistently outperforms SOFC-GT-RAB in terms of power output, efficiency, and CO2 emissions. At
optimal conditions (SOFC temperature=1173 K, fuel utilization=0.90, steam-to-carbon ratio=2.0, anode recirculation
ratio=0.30, afterburner recirculation ratio=0.10), SOFC-GT-RAN achieved SOFC and net powers of 208.51 kW and
207.47 kW, compared to 156.43 kW and 158.01 kW for SOFC-GT-RAB. Energy and exergy efficiencies were 93.18% and
89.81% for RAN, substantially higher than 70.96% and 68.40% for RAB. Moreover, CO2 emissions were lower for RAN
(205.98 kg/MWh) than for RAB (268.82 kg/MWh). These findings confirm that anode exhaust gas recirculation provides
superior technical and environmental performance, highlighting SOFC-GT-RAN as a promising pathway for efficient and
clean hybrid power generation.
