Thermo-economic analysis of a novel system integrating compressed air and thermochemical energy storage with solid oxide fuel cell-gas turbine

Performance study of a supercritical CO2 Brayton cycle coupled with a compressed CO2 energy storage system for waste heat recovery of ship gas turbines under variable load conditions

“…It is used to measure the degree of energy conversion of the system. 43,44 It is dened as the ratio of the total output power to the total consumption power when the system completes an energy storage and release process. The CCES system proposed in this paper is not an independent energy storage system, and the energy release process must complete depending on the heat provided by the TES.…”

Effect of steam reinjection mass flow rate on the SOFC–GT system with steam reinjection

“…There has been a great deal on the waste heat utilization of SOFC-GT system exhaust, and since the exhaust temperature of the SOFC-GT system is generally greater than 573.15 K, some scholars pass the exhaust into the heat recovery steam generator (HRSG) to generate superheated steam (Kuchonthara et al, 2003;Motahar and Alemrajabi, 2009;Onda et al, 2003;Ahmadi et al, 2017;Chitgar et al, 2019;Kumar and Singh, 2019;Karimi et al, 2020;Mojaver et al, 2020;Singh and Singh, 2021;Zhong et al, 2022;Guo et al, 2023;Liu et al, 2023;Xia et al, 2023). A large number of studies also exist on the utilization of the superheated steam generated by the waste heat, one is to inject the generated steam into the GT in the upstream SOFC-GT system for utilization (Kuchonthara et al, 2003;Motahar and Alemrajabi, 2009;Onda et al, 2003), and the other is to utilize the generated steam in other ways to complete the waste heat utilization (Ahmadi et al, 2017;Chitgar et al, 2019;Kumar and Singh, 2019;Karimi et al, 2020;Mojaver et al, 2020;Singh and Singh, 2021;Zhong et al, 2022;Guo et al, 2023;Liu et al, 2023;Xia et al, 2023), including, but not limited to, refrigeration systems (Singh and Singh, 2021), supercritical CO 2 cycle (Guo et al, 2023;Xia et al, 2023), Carina cycles (Chitgar et al, 2019), organic Rankine cycles or steam Rankine cycles (Cheng et al, 2019;Kumar and Singh, 2019;Karimi et al, 2020;Mojaver et al, 2020;Xia et al...…”

Exergy-economic assessment of a hybrid power, cooling and heating generation system based on SOFC

“…by early 2025, renewable energy will overtake coal as the world's largest source of electricity generation, while global fuel cell power generation capacity will also double [ 2 ]. Among these renewable energies, fuel cells have been proposed as a relatively new technology in energy conversion and among the types of fuel cells, solid oxide fuel cells (SOFC)s due to high operating temperature, high efficiency, and having waste heat with high-temperature potential to increase the efficiency of energy conversion systems, can be combined with gas turbines or other types of power generation cycles, such as low temperatures power, heat, and cold generation cycles, which in various studies combined cycle of solid oxide fuel cell and gas turbine [ [3] , [4] , [5] ], fuel cell and organic steam Rankin and Kalina cycle [ [6] , [7] , [8] ], fuel cell and H 2 O–NH 3 absorption refrigerant cycles [ [9] , [10] , [11] ], and fuel cell and absorption cold production cycle [ 12 , 13 ] are investigated. At present, the "wind - hydrogen strategy" in Europe enjoys a sound application prospect.…”