Exergy, economic and pinch analyses of a novel integrated structure for cryogenic energy storage and freshwater production using ejector refrigeration cycle, desalination unit, and natural gas combustion plant

Saharkhiz, Mohammad Hossein Monajati; Ghorbani, Bahram; Ebrahimi, Armin; Rooholamini, Sajedeh

doi:10.1016/j.est.2021.103471

Cited by 7 publications

(2 citation statements)

References 46 publications

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“…Therefore, it is desired to produce hydrogen through consumption of water and renewable energy sources. Water can be decomposed into oxygen and hydrogen using electro-thermochemical cycles through a series of chemical reactions, with the required power being provided by waste heat and renewable energy sources . The copper-chlorine (Cu–Cl) and magnesium-chloride (Mg–Cl) thermochemical cycles have the minimum temperature and heat load consumption among other cycles .…”

Section: Introductionmentioning

confidence: 99%

Multi-objective Optimization of a Novel Hybrid Structure for Co-generation of Ammonium Bicarbonate, Formic Acid, and Methanol with Net-Zero Carbon Emissions

et al. 2023

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Chemical storage of hydrogen, originated from renewable energy, is one of the most efficient and reliable methods to absorb carbon dioxide (CO 2 ) and easily transport large-scale energy to remote areas. In this study, a novel integration of an electro-thermochemical process with industrial flue gas thermal energy and wind turbines is proposed to absorb CO 2 and store chemically hydrogen in the form of methanol, formic acid, and ammonium bicarbonate. The proposed hybrid structure includes a post-combustion CO 2 capture technology, a copper−chlorine thermochemical process, and several ammonium bicarbonate, formic acid, and methanol production cycles. The proposed configuration produces 2597 kg/h methanol, 5270 kg/h ammonium bicarbonate, and 833.3 kg/h formic acid. The energy and exergy efficiencies of the proposed layout are computed at 63.68 and 66.82%, respectively. The exergy analysis depicts that three processes of electro-thermochemical, methanol production, and post-combustion CO 2 capture have the greatest destructed exergy contributions among other subsections to the amounts of 40.85, 30.16, and 7.97%, respectively. The verification, validation, and sensitivity analyses, along with a multi-objective optimization protocol (i.e., a hybrid neural network and a genetic algorithm), are also used to evaluate the proposed system. The objective functions, decision variables, and constraints for the optimization phase are determined through sensitivity analysis. Several multi-criteria decision evaluation methods are employed to prioritize and choose the optimal point from the Pareto set. The electrical power supplied from the wind turbines as well as the auxiliary power supply, and the energy and exergy efficiencies calculated based on the TOPSIS/LINAMP techniques are 9.90 MW, 89.23, and 67.27%, respectively. In addition, the power consumption, energy, and exergy efficiencies at the optimal operating condition, calculated using the

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Section: Introductionmentioning

confidence: 99%

Multi-objective Optimization of a Novel Hybrid Structure for Co-generation of Ammonium Bicarbonate, Formic Acid, and Methanol with Net-Zero Carbon Emissions

et al. 2023

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“…Saharkhiz et al explored a new hybrid system for energy storage and freshwater production. They proposed combining the refrigeration cycle with the processor core in the form of hot and cold composite curves and pinch analysis [20]. Zhao et al investigated a 600-MW chemical coal-fired power plant.…”

Section: Introductionmentioning

confidence: 99%

Development of a Model Efficiency Improvement for the Designing of Feedwater Heaters Network in Thermal Power Plants

Hoseinzadeh

Heyns

2022

Journal of Energy Resources Technology

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Thermal power plants play a significant role in generating power, electricity, and energy consumption in the world, especially in developing countries. Therefore, the energy analysis of these power plants is very useful to increase the efficiency of systems and reduce energy consumption. One of the components of power plants that play a great role in energy consumption and recovery is the feedwater heater. In this study, a design method-based pinch technology for feedwater heaters of a coal power plant is presented. This method is used to reduce the irreversibility of heat transfer in feedwater heaters in this power plant. This study is performed on 6 feedwater heaters, which are similar in pairs. The results of this method show that this method is feasible for this system and the results also show that the implementation of this method with a Pinch range of 10 °C indicated a deficit hot utility of about 48.54 MW. Also, the amount of power plant efficiency improvement is 12.12%, and according to the Pinch method, could reduce the energy price of the power plant by about 125489 $/year.

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Exergoeconomic analysis and multi‐objective whale optimization of an integrated solid oxide fuel cell and energy storage system using liquefied natural gas cold energy

Pan

Binama

et al. 2022

Intl J of Energy Research

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Summary A multigeneration system comprising solid oxide fuel cell, compressed air energy storage, gas turbine, supercritical CO2 recompression Brayton cycle (S‐CO2), and organic flash Rankine cycle (OFRC) based on liquefied natural gas cold energy is proposed. The system integrates peak shaving, heating, cooling, power generation, and energy storage, solving the imbalance between the supply and demand of renewable energy. It is comprehensively analyzed from the thermodynamic, economic, and exergoeconomic perspectives to evaluate the performance of the three phases (full time, charging period, and discharging period). The evaluation shows that the exergy analysis of the multigeneration system alone is not comprehensive, and the exergoeconomic analysis is more necessary. Additionally, the S‐CO2 coupled with the OFRC generates power in a more efficient way than the S‐CO2 coupled with the Organic Rankine cycle (ORC) or Organic Flash cycle (OFC) does. Finally, the NSGA‐II and multi‐objective whale algorithms are employed to optimize the system. The results show that the multi‐objective whale algorithm is slightly better than the NSGA‐II. Moreover, the optimized round‐trip efficiency (RTE) and levelized cost of electricity (LCOE) are 68.64% and 0.053 $ kWh−1, respectively. Compared with the base design point, the RTE improves by 1.93%, and the LCOE decreases by 3.64%.

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Exergy, economic and pinch analyses of a novel integrated structure for cryogenic energy storage and freshwater production using ejector refrigeration cycle, desalination unit, and natural gas combustion plant

Cited by 7 publications

References 46 publications

Multi-objective Optimization of a Novel Hybrid Structure for Co-generation of Ammonium Bicarbonate, Formic Acid, and Methanol with Net-Zero Carbon Emissions

Multi-objective Optimization of a Novel Hybrid Structure for Co-generation of Ammonium Bicarbonate, Formic Acid, and Methanol with Net-Zero Carbon Emissions

Development of a Model Efficiency Improvement for the Designing of Feedwater Heaters Network in Thermal Power Plants

Exergoeconomic analysis and multi‐objective whale optimization of an integrated solid oxide fuel cell and energy storage system using liquefied natural gas cold energy

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