Optimization and analysis of exergy, economic, and environmental of a combined cycle power plant

Javadi, MohammadAmin; Hoseinzadeh, Siamak; Khalaji, Mehdi; Ghasemiasl, Ramin

doi:10.1007/s12046-019-1102-4

Cited by 23 publications

(14 citation statements)

References 43 publications

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“…This parameter indicates the difference between the average cost of products and fuel due to the destruction and cost of investment. In this relationship, c P, k and c F, k are respectively the average cost per unit exergy of product and fuel for the component k, and their values are obtained from Equations (12) and (13).…”

Section: Exergoeconomic Analysismentioning

confidence: 99%

“…4 They also studied different types of desalination systems and their governing equations, then modeled the energy consumption of the evaporation vacuum evaporation system with a brine tank and reported on the economic analysis results. [5][6][7][8][9][10][11][12][13] Ghaebi et al investigated the thermodynamic modeling (including energy and exergy analysis) and the exogeochemical study of a power and hydrogen generation system including an organic Rankine cycle and a proton exchange membrane electrolyzer driven by geothermal energy, with different operating fluids (R245fa, R114, R600, and R236fa) to compare their effects on the performance of the payment system and used EES software for this purpose. Their results showed that the operating fluid R245fa has the highest energy and exergy efficiency, which are 3.11% and 67.58%, respectively.…”

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confidence: 99%

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Exergoeconomic analysis and optimization of reverse osmosis desalination integrated with geothermal energy

Hoseinzadeh

Yargholi

Kariman

et al. 2020

Env Prog and Sustain Energy

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In this research, the integrated carbon dioxide power cycle with the geothermal energy source to supply the required reverse osmosis desalination power for freshwater production is defined. The cycling power is consumed by the desalination system and sodium hypochlorite generator. Exergoeconomic analysis, and optimization are studied. Exergoeconomic analysis is shown that the desalination system, sodium hypochlorite generator, carbon dioxide turbine, and natural gas turbine have the highest rate for the sum of capital gain and exergy destruction cost. For the first case of optimization, the total cost rate is considered as the objective function. The optimal inlet discharge rate of sodium hypochlorite generator was 62% of the brine water outlet discharge rate of the desalination system. Plus, the total cost rate is reduced by 10% compared to the general case when 100% of brine water discharge rate of the desalination system enters into the sodium hypochlorite generator. The second case is multiobjective optimization to reduce costs and increase productivity.

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Section: Exergoeconomic Analysismentioning

confidence: 99%

mentioning

confidence: 99%

Exergoeconomic analysis and optimization of reverse osmosis desalination integrated with geothermal energy

Hoseinzadeh

Yargholi

Kariman

et al. 2020

Env Prog and Sustain Energy

Self Cite

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“…The amount of CO 2 produced in the combustion chamber is due to the combustion reaction, which is associated with various properties, including the temperature of the adiabatic flame. The adiabatic flame temperature can be calculated from the following equation:

T_{pz} = A σ^{α} \exp ((), β {(σ + λ)}^{2}) π^{x^{*}} θ^{y^{*}} ξ^{z^{*}}

{\dot{m}}_{{CO}_{2}} = 44.01 \times x \times ((), \frac{{\dot{m}}_{fuel}}{m_{fuel}}),

where x is the molar ratio in Equation of carbon in the fuel and the molecular weight of the fuel. This simple equation estimates precisely the amount of CO 2 emissions in the complete combustion process.…”

Section: System Description and Modeling Proceduresmentioning

confidence: 99%

mentioning

confidence: 99%

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Javadi

Ahmadi

Khalaji

2019

Env Prog and Sustain Energy

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Due to the necessity of achieving the energy systems with improved efficiency, combined power plants are developing in recent decades. Moreover, employing renewable energy sources in the power generation and heating/cooling purposes is an attractive idea to obtain more environmentally benign energy systems. In the current study, a combined cooling and power (CCP) plant is analyzed based on exergy and economic concepts. Afterward, by adding lithium‐bromide refrigeration cycle and parabolic solar collectors, the plant is investigated. The exergy efficiency, carbon dioxide emission, and cost of generated electricity are evaluated on the basis of SPECO model. The results of the study show that thermal and exergy efficiencies of the CCP plant with the solar collector depend on various parameters and can be affected significantly. The efficiency of the plant after applying lithium‐bromide refrigeration cycle and the solar collector increased from 50.33 to 51.73%, while the exergy efficiency enhanced from 47.48 to 48.22%. In addition, it was concluded that adding the collector and absorption chiller leads to 1.5% reduction in environmental pollutants.

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“…Parkash et al [32] reported the simulation of 440 µm solid particulates size slurry in the range of 10 to 30 % (by volume) at Prandtl number, Pr -5.83. Hoseinzadeh et al [33]- [38] reported the heat transfer characteristics through porous fins with multiple phase change material and presented the exergy energy analysis of power plant. The effect of MHD nanofluid heat transfer in a baffled U shaped enclosure is studied by Ma et al [39] - [41].…”

Section: Introductionmentioning

confidence: 99%

CFD Modeling of Slurry Pipeline at Different Prandtl Numbers

Parkash¹,

Kumar²,

Sikarwar³

2021

Journal of Thermal Engineering

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The present work shows the slurry flow characteristics of glass beads having density 2470 kg/m3 at different Prandtl number through a horizontal pipeline. The simulation is conducted by Eulerian two-phase model using RNG k-ε turbulence closure in available commercial software ANSYS FLUENT. The transportation of solid particulates has the settling behaviour in the slurry pipeline and that leads to the sedimentation and blockage of the pipeline resulting more power and pressure drop in the pipeline. Therefore, it is important to know the transport capability of the solid particulates at different Prandtl fluids to minimise the pressure loss. The fluid properties at four Prandtl numbers i.e. 1.34, 2.14, 3.42 and 5.83 is used to carry the solid concentration ranges from 30-50 % (by volume) at mean flow-velocity ranging from 3 to 5 ms-1 . The obtained computational results are validated with the published data in the literature. The results show that the pressure-drop rises with escalation in flow velocity and solid concentration at all Prandtl number. It is found that the suspension stability enhancement is considerable for lower range of Prandtl number and decreases for higher range of Prandtl number. Finally, glass beads concentration contours, velocity contours, concentration profile, velocity profiles and pressure drop are predicted to understand the slurry flow for chosen Prandtl numbers.

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Optimization and analysis of exergy, economic, and environmental of a combined cycle power plant

Cited by 23 publications

References 43 publications

Exergoeconomic analysis and optimization of reverse osmosis desalination integrated with geothermal energy

Exergoeconomic analysis and optimization of reverse osmosis desalination integrated with geothermal energy

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

CFD Modeling of Slurry Pipeline at Different Prandtl Numbers

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