Thermo-economic analysis of absorption air cooling system for pressurized solid oxide fuel cell/gas turbine cycle

Ghadamian, Hossein; Hamidi, A. A.; Farzaneh, Hooman; Ozgoli, Hassan Ali

doi:10.1063/1.4742336

Cited by 17 publications

(13 citation statements)

References 23 publications

(19 reference statements)

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“…In previous SOFC–GT combined cycle studies about 60–75% of the generated power was often provided by fuel cell. However, in the proposed combined system in this study, 45% of the generated power is provided by SOFC.…”

Section: Resultsmentioning

confidence: 99%

“…Since, one of the goals of this study is to enhance the outlet power of the combined cycle, the optimum amount of syngas fuel portion has been considered to generate maximum power in the cycle. In previous SOFC-GT combined cycle studies [24] about 60-75% of the generated power was often provided by fuel cell. However, in the proposed combined system in this study, 45% of the generated power is provided by SOFC.…”

Section: Resultsmentioning

confidence: 99%

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Modeling and simulation of an integrated gasification SOFC–CHAT cycle to improve power and efficiency

Ozgoli

Moghadasi

Farhani

et al. 2016

Env Prog and Sustain Energy

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Cascaded humidification advanced turbine (CHAT) cycles are used for the enhancement of output power in conventional gas turbines. In this study, an IG–SOFC–CHAT combined cycle has been presented. The proposed cycle has been used as a novel approach for alleviating the restrictions on generated power in the SOFC–GT hybrid systems. Additionally, a significant amount of heat can be produced in this hybrid cycle, which justifies its application as a CHP system. Modeling and simulation of the cycle have been performed from the energy point of view. To generate syngas fuel from coal, an FICFB gasifier system, integrated with a low temperature gas cleaning system, has been used. Results show that compared to the conventional gas turbines, electrical power generation from the proposed IG–SOFC–CHAT cycle has been increased by about 45%, while the total energy efficiency of the comprehensive cycle is still within the acceptable range of CHP cycles. Moreover, results indicate that the output power from the proposed cycle is stable against ambient temperature variations. In addition, wastage of heat in the proposed cycle was minimized by transferring waste heat to heat sinks, which resulted in the balance of energy in the cycle. Overall results show the suitability of the proposed cycle to attain high power generation capacity in SOFC–GT hybrid systems. © 2016 American Institute of Chemical Engineers Environ Prog, 36: 610–618, 2017

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Modeling and simulation of an integrated gasification SOFC–CHAT cycle to improve power and efficiency

Ozgoli

Moghadasi

Farhani

et al. 2016

Env Prog and Sustain Energy

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“…The flow sheet program we are using is called Cycle-Tempo and has this calculation of the Nernst loss in the fuel cell module in the correct way. The flow sheet program Cycle-Tempo is described elsewhere and is used in many studies of energy systems [41] and also in many fuel cell energy systems studies [21,42,43].…”

Section: System Designmentioning

confidence: 99%

Comparison of the solid oxide fuel cell system for micro CHP using natural gas with a system using a mixture of natural gas and hydrogen

2019

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Solid oxide fuel cell systems for combined heat and power production (SOFC μCHP) fuelled by natural gas are attractive because of their high electrical and total efficiency even at small scale. The development of a hydrogen economy will increase the availability of distributed hydrogen as a pure gas. Alternatively, hydrogen may be blended with natural gas in the grid. This study investigates the performance of SOFC μCHP systems, while using a fuel varying from pure hydrogen to pure methane via mixtures of hydrogen and methane called Hythane. Flowsheet models of external as well as internal reforming fuel cell systems were developed in Cycle-Tempo simulation software. Results show that both the external as well as the internal reforming system can operated on all fuel gas compositions varying from pure hydrogen to pure methane, thus allowing for a transition towards a hydrogen economy via the mixing of hydrogen into the natural gas grid. Although the natural gas based systems have a higher electrical efficiency, the introduction of hydrogen into the gas leads to a higher total efficiency of the combined heat and power system. The addition of hydrogen into the fuel minimizes the problems of thermal stress and thermal shock associated with the use of methane in internal reforming fuel cell systems. The internal reforming system showed a higher performance compared to the external reforming system for all Hythane gas mixtures in terms of not only electrical efficiency but also in terms of thermal and total efficiency.

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“…Due to the mentioned description, humidified cycles make a remarkable decrease in specific investment costs. Some of the benefits of GT systems using air–water mixture are higher electrical efficiency and performance, higher delivered power, better flow rate management, appropriate feasibility in CHP, cogeneration, and district heating applications .…”

Section: Introductionmentioning

confidence: 99%

Propose and analysis of an integrated biomass gasification‐CHAT‐ST cycle as an efficient green power plant

Hosseinpour

Mehdipour

Mirzahosseini

et al. 2019

Env Prog and Sustain Energy

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Advanced combined cycles using gas turbine and bottoming cycles have been developed to improve energy efficiency and output power of the conventional thermal power plants. In this study, integrated biomass gasification‐cascaded humidification advanced turbine and steam turbine cycle have been presented as a novel approach to reach out the sustainable energy vision. All generators of this comprehensive system operate by syngas produced from biomass gasification. Based on the technical consideration, modeling and simulation of the mentioned cycle have been performed, which results indicated more than 33.6 MW power generation and about 56.4% total efficiency in the base case. Moreover, parametric studies demonstrated the considerable dependency of the delivered power, specific fuel consumption, and heat rate to ambient temperature variations. In addition, principal parameters changes due to the fluctuation of the gasification temperature demonstrated an obvious increase in fuel consumption rate after crossing a turning point. Eventually, other achievements such as the negative effect of biomass moisture increase on cycle outputs, and also, advantages of turbine inlet temperature rise have obtained by plant analyzes. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Thermo-economic analysis of absorption air cooling system for pressurized solid oxide fuel cell/gas turbine cycle

Cited by 17 publications

References 23 publications

Modeling and simulation of an integrated gasification SOFC–CHAT cycle to improve power and efficiency

Modeling and simulation of an integrated gasification SOFC–CHAT cycle to improve power and efficiency

Comparison of the solid oxide fuel cell system for micro CHP using natural gas with a system using a mixture of natural gas and hydrogen

Propose and analysis of an integrated biomass gasification‐CHAT‐ST cycle as an efficient green power plant

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