4E Analysis of Integrated MHD-Combined Cycle

Esmaeilzadehazimi, M. A.; Manesh, Mohammad Hasan Khoshgoftar; Heleyleh, B. Bakhtiari; Modabbaer, H Vaznini

doi:10.5541/ijot.570540

Cited by 7 publications

(11 citation statements)

References 21 publications

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“…Exergy rates corresponding to fuel, product, desolation and exergy efficiency and exergy destruction ratio of the units of the MHD system (up to APH, the values are based on initial data of Haloi and Gogoi [32]). MHD System unit j 𝜓 ̇𝐹,𝑗 (𝑀𝑊) 𝜓 ̇𝑃,𝑗 (𝑀𝑊) 𝜓 ̇𝐷,𝑗 (𝑀𝑊) 𝜀 𝑗 (%) 𝛾 The results of the present study are verified with the work presented in [46]. For the purpose of validation, the combustion chamber and the MHD generator, having air and fuel input and the power output in Ref.…”

Section: Resultssupporting

confidence: 78%

Performance assessment of a magnetohydrodynamic power generation system: Division of the exergy destruction rate into its sub-portions

Haloi

Gogoi

2022

Journal of Energy Systems

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Sustainable and environmental friendly energy extraction and utilization is the foremost priority of the energy sector to meet the present and near future energy demands. The need of the day is to have efficient and eco-friendly energy conversion technologies either through the enhancement of the existing technologies or the development of some all-new technology. The present study investigates a standalone open-cycle Magnetohydrodynamic (MHD) power generation system using the advanced exergy analysis analytically. The effects of distributing the exergy destruction into endogenous/exogenous and avoidable/unavoidable on the improvement possibilities and the mutual interlinkages among the different units of the MHD system have been studied. The results showed that the MHD system has a higher possibility of its further development due to low unavoidable (36.82%) and high avoidable (63.18%) exergy desolation rates. The interlinkages among various units of the MHD system were found to be reasonably stronger due to the higher rate of exergy destruction of the endogenous type as compared to the exogenous portion. In the present study, the combustion chamber is found to have the highest possibility of upgradation as it possesses the largest value of avoidable exergy destruction rate together with the maximum rate of avoidable endogenous portion of the exergy destruction.

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Section: Resultssupporting

confidence: 78%

Performance assessment of a magnetohydrodynamic power generation system: Division of the exergy destruction rate into its sub-portions

Haloi

Gogoi

2022

Journal of Energy Systems

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“…The results express that the storage tank has the most exergy destruction rate and the highest cost of exergy destruction rate. Esmaeilzadehazimi et al [21] analyzed an MHD-Magneto hydrodynamic-cycle from 4E points of view. In MHD cycles, the waste heat can be recovered and used in the Brayton cycle as a heat source.…”

Section: Introductionmentioning

confidence: 99%

Energy, exergy, exergoeconomic, and exergoenvironmental analyses and multi-objective optimization of a CPC driven solar combined cooling and power cycle with different working fluids

Zandi

Mofrad

Moradifaraj

et al. 2021

International Journal of Thermodynamics

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This paper aims to provide comprehensive 4E (energy, exergy, exergoeconomic, and exergoenvironmental) and advanced exergy analyses of the Refrigeration Cycle (RC) and Heat Recovery Refrigeration Cycle (HRRC) and comparison of the performance with R744 (CO2) and R744A (N2O) working fluids. Moreover, multi-objective optimization of the systems has been considered to define the optimal conditions and the best cycle from various perspectives. In HRRC, heat recovery is used as a heat source for an organic Rankine cycle. The energy and exergy analysis results show that utilizing HRRC with both refrigerants increases the coefficient of performance (COP) and exergy efficiency. COP and exergy efficiency for HRRC-R744 have been obtained 2.82 and 30.7%, respectively. Due to the better thermodynamic performance of HRRC, other analyses have been performed on this cycle. Exergoeconomic analysis results show that using R744A leads to an increase in the total product cost. Total product cost with R744 and R744A have been calculated by 1.56 $/h and 1.96$/h, respectively. Additionally, to obtain the processes' environmental impact, Life Cycle Assessment (LCA) is used. Exergoenvironmental analysis showed that using R744A increases the product environmental impact by 32%. Owning to the high amount of endogenous exergy destruction rate in the compressor and ejector compared to other equipment, they have more priority for improvement. Multi-objective optimization has been performed with exergy efficiency and total product cost objective functions as well as COP and product environmental impact for both refrigerants, which indicates that HRRC-R744 has better performance economically and environmentally. In optimal condition, the value of exergy efficiency, total product cost, COP, and the product environmental impact have been accounted for by 28.51%, 1.44 $/h, 2.76, and 149.01 mpts/h, respectively.

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“…Esmaeilzadehazimi has been disclosed a 4E analysis of integrated magnetohydrodynamic (MHD) combined cycle. The authors have been reported that the cost of exergy destruction decreased, and the efficiency increased in their proposed cycle [23].…”

Section: Introductionmentioning

confidence: 99%

Energy, Exergy-Based and Emergy-Based Analysis of Integrated Solar PTC with a Combined Cycle Power Plant

Aghdam

Manesh

Khani

et al. 2021

International Journal of Thermodynamics

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Solar energy is one of the most promising strategies to reduce energy consumption and emissions pollutions. In this paper, integrating a combined cycle power plant with a Solar Parabolic Trough Collector (PTC) is evaluated and investigated. In this regard, Qom Combined Cycle Power Plant is considered a real case study in Qom city. Energy, Exergy, Exergoeconomic, Exergoenvironment, Emergoeconomic, and Emergoenvironemntal Analysis as (6E) Analysis have been performed to understand the base plant's integration better. Environmental impacts have been calculated by Life Cycle Assessment (LCA) in Sima Pro Software. Also, computer code has been developed for 6E analysis of base and integrated power plants. Validation of thermodynamic simulation has been examined with Thermoflex Software and plant data. Energy analysis results show the power output of the steam plant and overall energy efficiency is increased to 7.14% and 4.44% rather than the base case without adding additional fossil fuel. It shows the power generation and energy efficiency are increased significantly by adding PTC. Also, the overall exergy destruction and the total exergy cost rates are raised to 7% and 11.27%. In addition, overall environmental impacts, overall emergoeconomic, and overall emergoenvironmental values are increased to 1.67%, 6.2%, and 15.4%, respectively. However, the overall environmental impacts per net power are decreased.

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4E Analysis of Integrated MHD-Combined Cycle

Cited by 7 publications

References 21 publications

Performance assessment of a magnetohydrodynamic power generation system: Division of the exergy destruction rate into its sub-portions

Performance assessment of a magnetohydrodynamic power generation system: Division of the exergy destruction rate into its sub-portions

Energy, exergy, exergoeconomic, and exergoenvironmental analyses and multi-objective optimization of a CPC driven solar combined cooling and power cycle with different working fluids

Energy, Exergy-Based and Emergy-Based Analysis of Integrated Solar PTC with a Combined Cycle Power Plant

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