Performance assessment of a hybrid solid oxide and molten carbonate fuel cell system with compressed air energy storage under different power demands

Jienkulsawad, Prathak; Saebea, Dang; Patcharavorachot, Yaneeporn; Arpornwichanop, Amornchai

doi:10.1016/j.ijhydene.2019.09.245

Cited by 21 publications

(3 citation statements)

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“…More recently, Roushenas et al [13,14] explored the exergetics and economics of a trigeneration integrated system based on a combination of SOFC+CAES and a turbocharger. A similar hybrid configuration utilizing a molten carbonate fuel cell instead of a turbocharger was analyzed by Jienkulsawad et al [15]. The system configuration features an external natural gas reformer coupled with water-gas shift reactors to generate a feed stream consisting of primarily H 2 and CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of a Thermally Integrated Solid Oxide Fuel Cell and Compressed Air Energy Storage Hybrid System

Buchheit,

Noring,

Iyengar

et al. 2023

Energies

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Natural-gas-fueled solid oxide fuel cell (SOFC) systems have the potential for high-efficiency conversion of carbon to power due to the underlying electrochemical conversion process while readily facilitating carbon capture through the separation of the fuel and oxidant sources. Compressed air energy storage (CAES) technology can potentially store significant quantities of energy for later use with a high round-trip efficiency and lower cost when compared with state-of-the-art battery technology. The base load generation capability of SOFC can be coupled with CAES technology to provide a potentially flexible, low-carbon solution to meet the fluctuating electricity demands imposed by the increasing share of intermittent variable renewable energy (VRE) production. SOFC and CAES can be hybridized through thermal integration to maximize power output during periods of high electrical demand and then store power when either demand is low or renewable generation reduces power prices. The techno-economics of a low-carbon hybrid SOFC and CAES system was developed and investigated in the present study. The proposed hybrid system was found to be cost-competitive with other power-generating base-load facilities when power availability was considered. The hybrid system shows increased resilience to changes in a high VRE grid market scenario.

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Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of a Thermally Integrated Solid Oxide Fuel Cell and Compressed Air Energy Storage Hybrid System

Buchheit,

Noring,

Iyengar

et al. 2023

Energies

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“…Table 4.7 MCFC structure parameters for model validation (Milewski et al, 2013) .. Table 4.8 Parameters of the gas turbine (GT), compressor, turbine, and storages ...... steady-state in (0), 𝑦O2, 𝑀0𝑎SPchanged to 0.088 in (1), 𝑦O2, 𝑀0𝑎SPchanged to 0.072 in (2), 𝑦H2O, 𝐵0SP changed to 0.299 in (3), 𝑦H2O, 𝐵0SP changed to 0.2447 in (4), 𝑈𝑓, 𝑀SP changed to 0.7819 in (5), 𝑈𝑓, 𝑀SP changed to 0.7074 in (6), 𝑦𝐻2, 𝑀𝑓SP changed to 0.063 in (7), and 𝑦𝐻2, 𝑀𝑓SPchanged to 0.057 in (8) ......... 131…”

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confidence: 99%

“…Figure 7.11 The MV signals of closed-loop step response for set-point changes; steady-state in (0), 𝑦O2, 𝑀0𝑎SPchanged to 0.088 in (1), 𝑦O2, 𝑀0𝑎SPchanged to 0.072 in (2), 𝑦H2O, 𝐵0SP changed to 0.299 in (3), 𝑦H2O, 𝐵0SP changed to 0.2447 in (4), 𝑈𝑓, 𝑀SP changed to 0.7819 in (5), 𝑈𝑓, 𝑀SP changed to 0.7074 in (6), 𝑦𝐻2, 𝑀𝑓SP changed to 0.063 in (7), and 𝑦𝐻2, 𝑀𝑓SPchanged to 0.057 in (8) ......... 132 Figure 8.3 Effect of the added air feed and gas turbine (GT) pressure ratio on the ratio of the generated power of the fuel cell system (a), GT (b), and hybrid system (c) to the generated power of the integrated fuel cell (FC) system from a previous design Fuel cells are the electrochemical device that can convert the chemical energy of a fuel directly to electrical energy. The attractive features of fuel cells include no moving parts, quiet operation, low pollution and high efficiency.…”

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Design of solid oxide fuel cellmolten carbonate fuel cell combined system for power generation and carbon dioxide emission reduction

Jienkulsawad

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This research concentrates on the design and performance analysis of a solid oxide fuel cell (SOFC) and a molten carbonate fuel cell (MCFC) integrated system with using methane as fuel. Because SOFCs cannot completely use their fuel, there is remaining fuel leaving the system. In addition,�the exhaust gas from an SOFC can be directly fed into an MCFC. The integrated fuel cell system shows an electrical efficiency of 55.22%, which is higher than a single fuel cell system. Fuel utilization of both fuel cells, SOFC�temperature�dramatically affect the performance of the integrated system.�Four configurations were next proposed to be investigated and compared the performance�in terms of power generation, CO2 utilization, heat duty and NiO formation to determine the suitable design of the integrated fuel cell system. The results showed that system (B) is suitable for power generation improvement consideration with no NiO formation possibility found. However, the control strategy of such a system needs to be considered for the�efficient operation. A control structure design is performed based on economic optimization to select manipulated variables, controlled variables and control loop configurations. The objective (cost) function includes a carbon tax to get an optimal trade-off between power generation and carbon dioxide emission, and constraints include safe operation.�The relative gain array (RGA)�is applied to select input-output pairings. PID controllers are implemented to control the integrated system. As electricity demand can vary considerably and unpredictably, it is necessary to integrate energy storage with power generation systems. The gas turbine (GT) and advanced adiabatic compressed air energy storage (AA-CAES) system are implemented into the integrated fuel cell system to enhance the system flexibility.�The results showed that the�implementation of the GT and AA-CAES into the integrated fuel cell system allows the system to cope with the variations in power demand.

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A micro off-grid power solution for solid oxide fuel cell waste heat reusing enabled peak load shifting by integrating compressed-air energy storage

et al. 2022

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Performance assessment of a hybrid solid oxide and molten carbonate fuel cell system with compressed air energy storage under different power demands

Cited by 21 publications

References 35 publications

Techno-Economic Analysis of a Thermally Integrated Solid Oxide Fuel Cell and Compressed Air Energy Storage Hybrid System

Techno-Economic Analysis of a Thermally Integrated Solid Oxide Fuel Cell and Compressed Air Energy Storage Hybrid System

Design of solid oxide fuel cellmolten carbonate fuel cell combined system for power generation and carbon dioxide emission reduction

A micro off-grid power solution for solid oxide fuel cell waste heat reusing enabled peak load shifting by integrating compressed-air energy storage

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Performance assessment of a hybrid solid oxide and molten carbonate fuel cell system with compressed air energy storage under different power demands

Cited by 21 publications

References 35 publications

Techno-Economic Analysis of a Thermally Integrated Solid Oxide Fuel Cell and Compressed Air Energy Storage Hybrid System

Techno-Economic Analysis of a Thermally Integrated Solid Oxide Fuel Cell and Compressed Air Energy Storage Hybrid System

Design of solid oxide fuel cellmolten carbonate fuel cell combined system for power generation and carbon dioxide emission reduction

A micro off-grid power solution for solid oxide fuel cell waste heat reusing enabled peak load shifting by integrating compressed-air energy storage

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Design of solid oxide fuel cellmolten carbonate fuel cell combined system for power generation and carbon dioxide emission reduction