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Optimization of a Single Flash Geothermal Power Plant Powered by a Trans-Critical Carbon Dioxide Cycle Using Genetic Algorithm and Nelder-Mead Simplex Method

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Energy Engineering 2023年第2期120卷 263-275页

作者： yashar aryanfar Jorge Luis García Alcaraz Department of Electric Engineering and Computation Autonomous University of Ciudad JuárezCiudad JuárezChihuahuaMéxico Department of Industrial Engineering and Manufacturing Autonomous University of Ciudad JuárezCiudad JuárezChihuahuaMéxico

The usage of renewable energies,including geothermal energy,is expanding rapidly *** low efficiency of geothermal cycles has consistently highlighted the importance of recovering heat loss for these *** paper proposes a combined power generation cycle(single flash geothermal cycle with trans-critical CO_(2) cycle)and simulates in the EES(Engineering Equation Solver)*** results show that the design parameters of the proposed system are significantly improved compared to the BASIC single flash ***,the proposed approach is optimized using the genetic algorithm and the Nelder-Mead Simplex *** pressure,steam turbine output pressure,and CO_(2) turbine inlet pressure are three assumed variable parameters,and exergy efficiency is the target *** the default operating mode,the system exergy efficiency was 32%,increasing to 39%using the genetic algorithm and 37%using the Nelder-Mead method.

关键词： Optimization geothermal genetic algorithm Nelder-Mead simplex exergy efficiency

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Multi-objective evolutionary optimization and thermodynamics performance assessment of a novel time-dependent solar Li-Br absorption refrigeration cycle

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Science China(Technological Sciences) 2022年第11期65卷 2703-2722页

作者： MOHTARAM Soheil WU WeiDong aryanfar yashar ABRISHAMI Arya OMIDI Mohammad YANG QiGuo GARCIA ALCARAZ Jorge Luis CHEN YongBao School of Energy and Power Engineering University of Shanghai for Science and Technology Shanghai 20093China Department of Electric Engineering and Computation Autonomous University of Ciudad JudrezJuarezChihuahuaMexico School of Aerospace Engineering Tsinghua University Bejing 100084China School of Energy and Power Engineering Dalian University of TechnologyDalian116024China Depariment of Industrial Engineering and Manufacturing Autonomous University of Ciudad JudrezJudrezChihuahuaMexico

This research paper aims to perform dynamics analysis,3E assessment including energy,exergy,exergoeconomic,and the multiobjective evolutionary optimization on a novel solar Li-Br absorption refrigeration *** research is time-dependent,owing to solar radiation variability during different ***,all the necessary thermodynamic,energy,and exergy equations are applied *** is followed by the thermoeconomic analysis,which takes place after defining the designing variables during the thermoeconomic optimization process and is presented together with the economic relations of the system and its thermoeconomic ***,the sensitivity analysis is undertaken,the source of system inefficiency is determined,the multi-objective evolutionary optimization of the whole system is carried out,and the optimal values are compared with the primary *** Equation Solver(EES)software has been used to accomplish comprehensive *** part of the validation process,the results of the research are compared with those published previously and are found to be relatively consistent.

关键词： solar absorption refrigeration water-lithium bromide thermodynamics performance exergy analysis multi-objective optimization

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Measuring Impact of Lean Manufacturing Tools for Continuous Improvement on Economic Sustainability

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Journal of Systems Science and Systems Engineering 2024年第4期33卷 452-474页

作者： Luis Javier Márquez Figueroa Jorge Luis García-Alcaraz Ahmed I.Osman Alfonso Jesús Gil López yashar aryanfar Mika Sillanpää Mamdouh El Haj Assad Department of Electrical Engineering and Computer Science Universidad Autónoma de Ciudad JuárezCiudad JuárezChihuahuaMéxico Department of Industrial Engineering and Manufacturing Universidad Autónoma de Ciudad JuárezCiudad JuárezChihuahuaMéxico School of Chemistry and Chemical Engineering Queens UniversityBelfastNorthern IrelandUK Department of Economic and Managerial Sciences University of La RiojaLa RiojaSpain Department of Chemical Engineering University of JohannesburgJohannesburgSouth Africa Department of Sustainable and Renewable Energy Engineering University of SharjahSharjahUAE

Using Lean Manufacturing(LM)tools in production processes is crucial for companies’economic,environmental,and social sustainability *** study shows a structural equation model(SEM)that shows the relationship between LM Tools like Kaizen(KAI),Gemba(GEM),Value Stream Mapping(VSM)and Key Performance Indicator(KPI)with Economic Sustainability(ECS).Seven hypotheses were evaluated with data from 179 responses to a questionnaire about the Mexican maquiladora industry,showing that these variables are *** a 95%confidence level,the model was evaluated using the partial least squares *** findings indicate that the relationships between KAI and GEM and KAI and VSM have the strongest relationship,followed by VSM and ECS;however,VSM has the strongest effect on *** on these findings,it is recommended that managers adopt a continuous improvement(KAI)approach based on working directly on the shop floor(GEM and VSM)to support their decisions regarding economic growth(ECS).

关键词： Lean manufacturing economic sustainability structural equation model quality improvement

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