Exergy analysis of a gas-turbine combined-cycle power plant with precombustion CO2 capture

Ertesvåg, Ivar S.; Kvamsdal, Hanne M.; Bolland, Olav

doi:10.1016/j.energy.2004.05.029

Cited by 100 publications

(48 citation statements)

References 14 publications

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“…It also indicates that maximum exergy is destroyed during the combustion and steam generation process; which represents over 80% of the total exergy destruction in the overall system Ivar et al [30] was investigated a concept for natural-gas fired power plants with CO 2 capture using exergy analysis. Natural-gas was reformed in an auto-thermal reformer, and the CO 2 was separated before the hydrogen-rich fuel was used in a conventional combined-cycle process.…”

Section: Combined Cycle Based Thermal Power Plantsmentioning

confidence: 99%

An Approach to Analyse Energy and Exergy Analysis of Thermal Power Plants: A Review

Reddy¹,

Kaushik²,

Tyagi³

et al. 2010

SGRE

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Section: Combined Cycle Based Thermal Power Plantsmentioning

confidence: 99%

An Approach to Analyse Energy and Exergy Analysis of Thermal Power Plants: A Review

Reddy¹,

Kaushik²,

Tyagi³

et al. 2010

SGRE

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“…The focus in the mentioned literature was on hydrogen production and reactor performance. Studies have also been carried out on analysis of power generation processes with precombustion capture with Ca-Cu looping [21], auto-thermal reforming [22][23][24][25][26][27] and steam-methane reforming [28]. Analysis of chemical looping systems with more focus on hydrogen production from NG has been reported by Spallina et al [29], Kathe et al [30], Diglio et al [31], Antzara et al [32], and Cormos et al [33].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Combined Cycle Power Plants with Chemical Looping Reforming of Natural Gas and Pre-Combustion CO2 Capture

2018

Self Cite

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Abstract:In this paper, a gas-fired combined cycle power plant subjected to a pre-combustion CO 2 capture method has been analysed under different design conditions and different heat integration options. The power plant configuration includes the chemical looping reforming (CLR) of natural gas (NG), water gas shift (WGS) process, CO 2 capture and compression, and a hydrogen fuelled combined cycle to produce power. The process is denoted as a CLR-CC process. One of the main parameters that affects the performance of the process is the pressure for the CLR. The process is analysed at different design pressures for the CLR, i.e., 5, 10, 15, 18, 25 and 30 bar. It is observed that the net electrical efficiency increases with an increase in the design pressure in the CLR. Secondly, the type of steam generated from the cooling of process streams also effects the net electrical efficiency of the process. Out of the five different cases including the base case presented in this study, it is observed that the net electrical efficiency of CLR-CCs can be improved to 46.5% (lower heating value of NG basis) by producing high-pressure steam through heat recovery from the pre-combustion process streams and sending it to the Heat Recovery Steam Generator in the power plant.

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“…The result of their analysis revealed that the highest exergy destruction occurs in the combustion chamber, which amounts to about 22.18MW from measurement on a gas turbine within the tropical zone. Ertesvag et al [9] showed that gas turbine pressure ratio, gas turbine inlet temperature, steam turbine inlet temperature demonstrated great influence on the exergy performance of a gas turbine combined cycle with pre-combustion CO 2 capture system. The analysis further revealed that higher exergy loss occurred in the natural gasfired turbine system when compare with hydrogen-rich fuel fired turbine [9].…”

Section: Introductionmentioning

confidence: 99%

“…Ertesvag et al [9] showed that gas turbine pressure ratio, gas turbine inlet temperature, steam turbine inlet temperature demonstrated great influence on the exergy performance of a gas turbine combined cycle with pre-combustion CO 2 capture system. The analysis further revealed that higher exergy loss occurred in the natural gasfired turbine system when compare with hydrogen-rich fuel fired turbine [9]. Kwambai [10] identified subsystems where substantial exergy loss occurred.…”

Section: Introductionmentioning

confidence: 99%

Performance and Economic Analysis of Gas Turbine Subsystems for Power Generation in the Niger Delta

Rahimi

2016

IJET

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Abstract:In this research work, performance and economic analysis of three units' gas turbine plants in the Niger Delta, Nigeria has been carried out for the period of 18 months. The aim of this study is to assess the energy, exergy and economic behavior of the plants' subsystems. The methodology adopted was the splitting of the system into control volumes to show the inflow and outflow of energy and exergy at different operating conditions. A parametric study was also conducted to evaluate the influence of key decision variables like the load on the plant's subsystem performance. The analysis was done in MATLAB 7.3 ® environment and the results reveals that between the 40%-86% loading of the plant, the energy loss was optimum due to outages and exhaust gas energy waste, with revenue worth of $14,611,642 cumulatively, while the irreversibility in the exhaust gas progressively increase as the load increases with an exergy destruction cost rate of $234.98 per hour per unit. The combustor shows maximum exergy loss at 44% load with an exergy destruction cost rate of $127.87 per hour per unit, while the power turbine highest exergy destruction cost rate occurred at 73% load. These key performance indicators provide relevant information on the technical state of the plant for decision-making.

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Exergy analysis of a gas-turbine combined-cycle power plant with precombustion CO2 capture

Cited by 100 publications

References 14 publications

An Approach to Analyse Energy and Exergy Analysis of Thermal Power Plants: A Review

An Approach to Analyse Energy and Exergy Analysis of Thermal Power Plants: A Review

Analysis of Combined Cycle Power Plants with Chemical Looping Reforming of Natural Gas and Pre-Combustion CO2 Capture

Performance and Economic Analysis of Gas Turbine Subsystems for Power Generation in the Niger Delta

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