Exergoeconomic analysis and optimization of a triple-pressure combined cycle plant using evolutionary algorithm

Bakhshmand, Sina Kazemi; Saray, Rahim Khoshbakhti; Bahlouli, Keyvan; Eftekhari, Hajar; Ebrahimi, Afshin

doi:10.1016/j.energy.2015.09.073

Cited by 46 publications

(12 citation statements)

References 21 publications

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“…Analysis on reliability and maintenance turned from a periodical approach to equivalent life-impact due to new high stressing working conditions. Modern technology and performance of present GTCC plant [21] is also derived from studies based on energy system models, different in terms of software environment, purpose and structure [22][23] [24][25] [26][27].…”

Section: Introductionmentioning

confidence: 99%

Gas turbine combined cycle start-up and stress evaluation: A simplified dynamic approach

2017

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Section: Introductionmentioning

confidence: 99%

Gas turbine combined cycle start-up and stress evaluation: A simplified dynamic approach

2017

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“…However, the total initial, operating, and maintenance costs ( trueZ˙) must be calculated. Then, by considering the calculated values in turbine, pump, and electrolyzer exergy balance, finally the exergy cost of these devices is calculated. normal trueZ˙ is defined as follows 43 …”

Section: Methodsmentioning

confidence: 99%

Thermo-economic and exergy assessment and optimization of performance of a hydrogen production system by using geothermal energy

Ahmadi

Banihashem²,

Ghazvini

et al. 2018

Energy & Environment

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Due to the increasing need to find alternative fuels to restrict the use of oil in the world, substantial alternative sources have been identified. One of these alternative sources is hydrogen. Hydrogen is produced through an electrochemical process. The purpose of this paper is to model an electrochemical process and to determine the yields or losses of process efficiency by increasing or decreasing the water supply temperature. For the adaptation of the environmental process, the electricity required for the electrolyzer is supplied from a geothermal unit. For the sake of achieving the desired goals, the geothermal unit has been modeled and various parameters have been investigated. In this paper, an analysis of energy and exergy thermodynamics, as well as the exergy-economic analysis of the proton exchange membrane (PEM-type) electrolysis process for hydrogen production, which derives its driving power from ground-based power has been carried out. For this purpose, the required work is generated from the geothermal source by the Rankine cycle. The resulting work is used as an input for the electrolysis process and electrolysis water is preheated by geothermal sewage treatment. Funtional parameters based on the first and second thermodynamic rules are determined for the system and the performance of the system has been evaluated. The effects of geothermal water temperature and electrolysis on the amount of generated hydrogen have been studied and it has been shown that these parameters have a correlation with each other. Also, energy, exergy and thermo-economic analysis methods have been carried out by using MATLAB software.

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“…Rovira et al [24] considered the frequent off-design operation of CC and developed a thermoeconomic optimization model in order to minimize the electricity cost. Bakhshmand et al [25] have optimized a CC with supplementary firing leading to 3% decrement in the power plant specific cost and consequently the cost of electricity. Rovira et al [26] have optimized several configurations of CC using a partially recuperative gas turbine and an HRSG of two and three pressure levels, among their main conclusions: the optimum recuperative mass fraction is approximately 90% for both two and three pressure levels HRSG.…”

Section: Introductionmentioning

confidence: 99%

Thermo-economic optimization of heat recovery steam generator for a range of gas turbine exhaust temperatures

Nadir

Ghenaiet

Carcasci

2016

Applied Thermal Engineering

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Exergoeconomic analysis and optimization of a triple-pressure combined cycle plant using evolutionary algorithm

Cited by 46 publications

References 21 publications

Gas turbine combined cycle start-up and stress evaluation: A simplified dynamic approach

Gas turbine combined cycle start-up and stress evaluation: A simplified dynamic approach

Thermo-economic and exergy assessment and optimization of performance of a hydrogen production system by using geothermal energy

Thermo-economic optimization of heat recovery steam generator for a range of gas turbine exhaust temperatures

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