Integration of Supercritical CO2 Recompression Brayton Cycle with Organic Rankine/Flash and Kalina Cycles: Thermoeconomic Comparison

Mahmoudi, S.M.S.; Sardroud, Ramin Ghiami; Sadeghi, Mohsen; Rosen, Marc A.

doi:10.3390/su14148769

Cited by 6 publications

(3 citation statements)

References 47 publications

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“…Q k , and U k are the logarithmic mean temperature difference, the heat transfer rate, and the total heat transfer coefficient, respectively. Here, costs for the valves, mixer, and flash separator are neglected [55,77,78]. The source costs in Table 6 are translated into 2021 costs utilizing the chemical engineering plant cost index (CEPCI), as follows:…”

Section: Exergo-economic Analysismentioning

confidence: 99%

“…The authors considered seven different OFC working fluids, and the findings illustrated that the best thermo-economic and thermodynamic performances were obtained with n-nonane. For enhancing the performance of the SCRBC, three distinct bottoming systems, including Kalina cycle, OFC, and ORC, were considered to reuse the SCRBC waste heat and evaluated from the viewpoints of thermo-economics and thermodynamics by Mahmoudi et al [55]. The SCRBC/ORC and SCRB/Kalina cycles showed the greatest and the lowest exergy efficiencies, respectively, while the SCRBC/ORC exhibited the best thermo-economic performance.…”

Section: Introductionmentioning

confidence: 99%

“…Ecological and environmental issues need to be considered. The superior organic working fluid is a fluid with low values of ozone depletion potential (ODP) and global warming potential (GWP) [55].…”

mentioning

confidence: 99%

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Proposal and Comprehensive Analysis of a Novel Combined Plant with Gas Turbine and Organic Flash Cycles: An Application of Multi-Objective Optimization

Ghiami Sardroud,

Javaherian,

Seyed Mahmoudi

et al. 2023

Sustainability

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Environmental, exergo-economic, and thermodynamic viewpoints are thoroughly investigated for a state-of-the-art hybrid gas turbine system and organic flash cycle. For the proposed system, the organic flash cycle utilizes the waste thermal energy of the gases exiting the gas turbine sub-system to generate additional electrical power. Six distinct working fluids are considered for the organic flash cycle: R245fa, n-nonane, n-octane, n-heptane, n-hexane, and n-pentane. A parametric investigation is applied on the proposed combined system to evaluate the impacts of seven decision parameters on the following key operational variables: levelized total emission, total cost rate, and exergy efficiency. Also, a multi-objective optimization is performed on the proposed system, taking into account the mentioned three performance parameters to determine optimum operational conditions. The results of the multi-objective optimization of the system indicate that the levelized total emission, total cost rate, and exergy efficiency are 74,569 kg/kW, 6873 $/h, and 55%, respectively. These results also indicate the improvements of 16.45%, 6.59%, and 3% from the environmental, economic, and exergy viewpoints, respectively. The findings reveal that utilizing n-nonane as the working fluid in the organic flash cycle can yield the lowest levelized total emission, the lowest total cost rate, and the highest exergy efficiency.

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Section: Exergo-economic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%