Thermoeconomic analysis and optimization of a geothermal-driven multi-generation system producing power, freshwater, and hydrogen

Hekmatshoar, Maziyar; Deymi–Dashtebayaz, Mahdi; Gholizadeh, Mohammad; Dadpour, Daryoush; Delpisheh, Mostafa

doi:10.1016/j.energy.2022.123434

Cited by 76 publications

(7 citation statements)

References 64 publications

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“…Through exergoeconomics, it is possible to recognize components with high costs that need for amendments to increase the system's efficiency. Thus, information must be obtained using the components' cost balance and cost rate (Hekmatshoar et al 2022). On this line, the cost rate must be calculated.…”

Section: Economic Analysismentioning

confidence: 99%

Integration of geothermal-driven organic Rankine cycle with a proton exchange membrane electrolyzer for the production of green hydrogen and electricity

Assareh

Delpisheh

Baldinelli

et al. 2023

Environ Sci Pollut Res

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Engineers and scientists are increasingly interested in clean energy options to replace fossil fuels in response to rising environmental concerns and dwindling fossil fuel resources. There has been an increase in the installation of renewable energy resources, and at the same time, conventional energy conversion systems have improved in efficiency. in this paper, several multi-generation systems based on geothermal energy are modeled, assessed, and optimized with an organic Rankine cycle and proton-exchange membrane electrolyzer subsystem in five different arrangements. Based on the results, the evaporator mass flow rate and inlet temperature, turbine efficiency, and inlet temperature are the most influential parameters on system outputs, namely, net output work, hydrogen production, energy efficiency, and cost rate. In this case study, the city of Zanjan (Iran) is selected for a case study, and the results of system energy efficiency for changes in ambient temperature are examined during the four seasons of the year. To determine the optimal values of the objective functions, energy efficiency, and cost rate, NSGA-II multi-objective genetic algorithm is employed, and a Pareto chart is derived as a result. A system's irreversibility and performance are gauged by energy and exergy analyses. At the optimum state, the best configuration yields an energy efficiency and cost rate of 0.65% and 17.40 $/h, respectively.

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Section: Economic Analysismentioning

confidence: 99%

Integration of geothermal-driven organic Rankine cycle with a proton exchange membrane electrolyzer for the production of green hydrogen and electricity

Assareh

Delpisheh

Baldinelli

et al. 2023

Environ Sci Pollut Res

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“…In the end, the bottom stream of the reboiler, with low CO 2 content, is recycled to the absorber column (flow S15). CO 2 capture efficiency [Partial CO 2 capture] is a design parameter that is given in Equation (18).…”

Section: Carbon Capture Unitmentioning

confidence: 99%

“…Solar collectors yield the highest irreversibility share (65%), and toluene and n‐decane as organic fluids have the highest ORC power and the highest amount of freshwater produced. A geothermal‐driven co‐generation system was proposed and thermo‐economically analyzed by Hekmatshoar et al 18 The system is comprised of MED, ORC, and PEM electrolyzer and produces freshwater (0.28–1.5 kg/s) and hydrogen (0.0009–0.0045 kg/s) at 175–587.5 $/h cost rate in optimal conditions. The system prevents up to 4274 tons of CO 2 emission and saves up to 256 000 $ in taxes.…”

Section: Introductionmentioning

confidence: 99%

Conceptual design and energy, economic and environmental ( 3E ) analysis of a natural gas‐based integrated system with reduced CO ₂ emission for multigeneration of electricity, freshwater, syngas, and oxygen

Fadaei

Aslani

Senani

et al. 2022

Intl J of Energy Research

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Summary This study proposes a novel multigeneration system consisting of a gas turbine cycle, multi‐effect desalination (MED), mono ethanolamine‐based post‐combustion carbon capture, and a co‐electrolysis unit. The designed multigeneration system aims to produce electricity, freshwater, syngas, and oxygen. This study considers two main configurations, namely base and advanced cases. In addition, the advanced configuration is simulated for three scenarios of carbon utilization and absorption efficiencies of 85%,90%, and 95% in the capture unit. The system is analyzed from energy, environmental, and economic points of view to ascertain the feasibility of each scenario. The scenarios include (i) transferring all captured carbon dioxide to a co‐electrolysis unit, (ii) delivering 30% of captured carbon dioxide to a co‐electrolysis unit and storing the rest, and (iii) storing all captured carbon dioxide. According to the results, the advanced system, compared with the base case, has 26.27% higher energy efficiency and 8.01% higher carbon dioxide capture efficiency besides 42% lower water consumption. The first scenario performs better in oxygen and syngas production (44.46 and 33.51 kg/s). In contrast, the third scenario is the most promising, considering energy and carbon dioxide capture efficiency (83.72% and 76.61%) and net electricity generation (327.97 MW). Moreover, the third scenario demonstrated the best economic feasibility with the prime cost of electricity equal to 0.02 US$/kWh and a period of return of about 1.1 years. The results confirm that the proposed multigeneration system is capable of producing multiple useful and affordable products while minimizing the CO2 emission to the atmosphere.

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“…However, the use of this generator has problems such as pollution caused by diesel fuel consumption [5], which elicits lung and respiratory diseases. Diesel fuel is considered a finite and non-renewable source, and in recent years, attention has been focused on reducing the consumption of fossil fuels and replacing it with clean and renewable energy [6][7][8][9]. The use of renewable energy, in turn, has problems such as the high cost of its construction and the dependence of its energy production on climate change [10,11].…”

Section: Introductionmentioning

confidence: 99%

Technical and Economic Evaluation and Optimization of an Off-Grid Wind/Hydropower Hybrid System

Alayi,

Ebazadeh,

Monfared

et al. 2023

IJRCS

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Owing to global population growth, more fossil fuels are being used to meet the energy demand, which has led to increases in environmental pollution. Therefore, alternative sources such as renewable energy can be employed to meet some of the needs. Renewable energy has been criticized for its related problems such as downtime and high investment costs. In this study, a system was proposed to address these two problems by integrating wind and hydropower turbines, in Khalkhal, Ardabil, Iran as a case study. To appraise the system, an economic model was generalized, and an Ant Colony Optimization (ACO) method aiming to reduce investment costs was, implemented. The results show that to cover 100% of the required energy demand with a hybrid system of wind and hydropower turbines, the total cost of this system will be $ 202138. Also, the Cost of Energy (COE) per unit of generated power with the hydropower system, wind, and battery storage is gauged at 0.261 $/kWh. For the case study, to supply the required energy demand, 10 wind turbines and 23 kVA batteries, as well as a 14.6 kW hydropower turbine are required.

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Thermoeconomic analysis and optimization of a geothermal-driven multi-generation system producing power, freshwater, and hydrogen

Cited by 76 publications

References 64 publications

Integration of geothermal-driven organic Rankine cycle with a proton exchange membrane electrolyzer for the production of green hydrogen and electricity

Integration of geothermal-driven organic Rankine cycle with a proton exchange membrane electrolyzer for the production of green hydrogen and electricity

Conceptual design and energy, economic and environmental ( 3E ) analysis of a natural gas‐based integrated system with reduced CO ₂ emission for multigeneration of electricity, freshwater, syngas, and oxygen

Technical and Economic Evaluation and Optimization of an Off-Grid Wind/Hydropower Hybrid System

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Thermoeconomic analysis and optimization of a geothermal-driven multi-generation system producing power, freshwater, and hydrogen

Cited by 76 publications

References 64 publications

Integration of geothermal-driven organic Rankine cycle with a proton exchange membrane electrolyzer for the production of green hydrogen and electricity

Integration of geothermal-driven organic Rankine cycle with a proton exchange membrane electrolyzer for the production of green hydrogen and electricity

Conceptual design and energy, economic and environmental ( 3E ) analysis of a natural gas‐based integrated system with reduced CO 2 emission for multigeneration of electricity, freshwater, syngas, and oxygen

Technical and Economic Evaluation and Optimization of an Off-Grid Wind/Hydropower Hybrid System

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Conceptual design and energy, economic and environmental ( 3E ) analysis of a natural gas‐based integrated system with reduced CO ₂ emission for multigeneration of electricity, freshwater, syngas, and oxygen