Exergoeconomic analysis and optimization of a solar energy-based integrated system with oxy-combustion for combined power cycle and carbon capturing

Al-Hamed, Khaled H.M.; Dinçer, İbrahim

doi:10.1016/j.energy.2022.123814

Cited by 28 publications

(13 citation statements)

References 39 publications

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“…The design of H 2 liquefaction cycles along with industrial H 2 production units at high pressure can lead to the elimination of compressors, reducing the production costs and SEC. The high costs of purchasing special H 2 compressors can be compensated by high-pressure electrolysis. ,, …”

Section: Status and Future Prospects Of Liquid Hydrogenmentioning

confidence: 99%

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

et al. 2023

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The main challenges of liquid hydrogen (H2) storage as one of the most promising techniques for large-scale transport and long-term storage include its high specific energy consumption (SEC), low exergy efficiency, high total expenses, and boil-off gas losses. This article reviews different approaches to improving H2 liquefaction methods, including the implementation of absorption cooling cycles (ACCs), ejector cooling units, liquid nitrogen/liquid natural gas (LNG)/liquid air cold energy recovery, cascade liquefaction processes, mixed refrigerant systems, integration with other structures, optimization algorithms, combined with renewable energy sources, and the pinch strategy. This review discusses the economic, safety, and environmental aspects of various improvement techniques for H2 liquefaction systems in more detail. Standards and codes for H2 liquefaction technologies are presented, and the current status and future potentials of H2 liquefaction processes are investigated. The cost-efficient H2 liquefaction systems are those with higher production rates (>100 tonne/day), higher efficiency (>40%), lower SEC (<6 kWh/kgLH2), and lower investment costs (1–2 $/kgLH2). Increasing the stages in the conversion of ortho- to para-H2 lowers the SEC and increases the investment costs. Moreover, using low-temperature waste heat from various industries and renewable energy in the ACC for precooling is significantly more efficient than electricity generation in power generation cycles to be utilized in H2 liquefaction cycles. In addition, the substitution of LNG cold recovery for the precooling cycle is associated with the lower SEC and cost compared to its combination with the precooling cycle.

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Section: Status and Future Prospects Of Liquid Hydrogenmentioning

confidence: 99%

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

et al. 2023

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“…The recommended solutions provided by the G20 countries to achieve net-zero GGEs are associated with several problems. The essential problem of the CCPs in common thermal power plants and various industries is their high investment and operational costs . The use of CO 2 separated from flue gas in valuable clean fuels can compensate for a part of the investment associated with the separation units.…”

Section: Introductionmentioning

confidence: 99%

“…The use of CO 2 separated from flue gas in valuable clean fuels can compensate for a part of the investment associated with the separation units. A brief background and a summary of previous research on CO 2 capture in various industrial processes are given in the Supporting Information. − In 2020 and 2021, the reported worldwide commercial CO 2 capture and storage projects were 65 and 135, respectively. Due to the implementation of taxes for carbon production, a major portion of these commercial projects were executed in the United States and Canada, with 37 and 78 projects in 2020 and 2021, respectively. , Nowadays, 80% of the world’s primary energy supply is provided by fossil fuels .…”

Section: Introductionmentioning

confidence: 99%

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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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“…However, the production cost may be controversial, as the comprehensive availability of local raw materials, the cost of local manufacturing, and the cost of power sources deviate between places [ 24 ]. Currently, economics evaluation is the primary and most common method for drying systems, while the techno-economic method is among the most common and popular economic analysis methods for studying thermodynamic systems, such as the traditional energy system [ 25 , 26 ] and emerging energy system [ 27 , 28 ]. The main advantages of the techno-economic method are that the cost flow and the energy flow of the system can be combined to identify the energy–exergy destruction rate of each component, indicate the improvement direction, and obtain the unit cost of the final product of the system [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Performance of Exergetic, Energetic and Techno-Economic Analyses on a Gas-Type Industrial Drying System of Black Tea

Zeng

Han

et al. 2022

Foods

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The purpose of this research work is to perform detailed exergetic, energetic and techno-economic analysis of the black tea drying process in the gas-type industrial dryer. Exergy–energy and techno-economic methodology was applied to investigate the heat loss, exergetic and energetic performance, exergy efficiency, improvement potential rate, sustainability index and techno-economic performance of a drying system. The results showed that the heat loss of exhaust air in the late drying process played a main contributing role in the heat loss and exergy loss of the whole drying system. Therefore, the exergy efficiency of the initial drying period and the redrying period varied from 38.08% to 65.09% and 24.76% to 26.97%, respectively. In addition, the improvement potential rate and sustainability index of the whole system varied from 6.93 kW to 12.94 kW and 1.33 to 2.86, respectively. The improvement potential obtained in the present work indicated that the drying operation is greatly in need of exergy performance improvement. Finally, the net present value and payback period obtained from techno-economic analysis were 179,442.03 USD and 5.3 years, the result is useful for investors or contractors to refer to and make investment decisions.

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Exergoeconomic analysis and optimization of a solar energy-based integrated system with oxy-combustion for combined power cycle and carbon capturing

Cited by 28 publications

References 39 publications

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

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

Performance of Exergetic, Energetic and Techno-Economic Analyses on a Gas-Type Industrial Drying System of Black Tea

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