Design and multi-criteria optimisation of a trigeneration district energy system based on gas turbine, Kalina, and ejector cycles: Exergoeconomic and exergoenvironmental evaluation

Ebrahimi‐Moghadam, Amir; Farzaneh–Gord, Mahmood; Moghadam, Ali Jabari; Abu-Hamdeh, Nidal H.; Lasemi, Mohammad Ali; Arabkoohsar, Ahmad; Alimoradi, Ashkan

doi:10.1016/j.enconman.2020.113581

Cited by 77 publications

(11 citation statements)

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“…50 or for energy integrated systems as in Ref. 63. However, the effect of different weight coefficients is examined for S4 (see Table 5) and a negligible effect is noted on the optimization results.…”

Section: Resultsmentioning

confidence: 99%

Combined direct oxy‐combustion and concentrated solar supercritical carbon dioxide power system—Thermo, exergoeconomic, and quadruple optimization analyses

Sleiti

Al‐Ammari

2022

Intl J of Energy Research

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Summary For the global future energy systems, concentrated solar power (CSP) and direct CO2 capture systems are of the most important key technologies, however, each of these systems has shortcomings. This study addresses the solar intermittency and power control complexity of the CSP systems and the substantial energy penalty of the direct oxy‐combustion (DOC) supercritical carbon dioxide (sCO2) power systems by integrating both systems. Herein, innovative power cycle configurations that integrate the CSP tower system with DOC sCO2 power cycle are introduced. The configurations include two basic cycles for comparison and validation purposes and three integrated cycles. The basic configurations are: an intercooled sCO2 power cycle driven by DOC system (S1), and a stand‐alone basic CSP tower system (S2). The integrated configurations are: CSP/DOC system where the CSP works as a preheater (S3); CSP/DOC system where the CSP works as a reheater (S4); and CSP/DOC system where each system heats part of the working fluid to drive its high‐pressure turbine (S5). The hybrid configurations reduce the fuel and the parasitic power consumptions of the basic DOC systems (S1) and reduce the capital cost associated with the conventional CSP systems (S2) by eliminating the need for thermal storage. Over practical ranges of operational parameters, comprehensive thermoeconomic, exergoeconomic, and optimization analyses for the proposed configurations are performed. Compared to the conventional CSP system, the LCOE of the hybrid system is lower by 50%. Among the hybrid configurations, the energetic and exergetic performances of S4 are the best with the lowest LCOE. According to the optimization analysis, S4 has a thermal efficiency of 55.29% at LCOEs of 7.705¢/kWh. S3, S5, S2, and S1 have thermal efficiencies of 52.90%, 48.72%, 45.56%, and 40.54% at LCOE of 7.970, 8.138, 7.864, and 6.351¢/kWh, respectively.

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Section: Resultsmentioning

confidence: 99%

Combined direct oxy‐combustion and concentrated solar supercritical carbon dioxide power system—Thermo, exergoeconomic, and quadruple optimization analyses

Sleiti

Al‐Ammari

2022

Intl J of Energy Research

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“…29,52 Multiobjective optimization is a typical optimization method which can be applied in searching for the optimal solutions to satisfy several conflicting objectives at the same time. [53][54][55] In this section, NSGA-II method is used to find the Pareto frontier (series of optimal points) with three conflicting objectives being the system exergy efficiency, the freshwater production, and the total cost per unit exergy of the entire system. The system exergy efficiency represents the thermodynamic performance of the system, the freshwater production represents the capacity of water supply, and the…”

Section: Optimizationmentioning

confidence: 99%

Thermoeconomic assessment and multiobjective optimization of a CCHP and MED hybrid system based on IR‐SOFC / MGT

You

Han

Liu

et al. 2021

Intl J of Energy Research

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A thermoeconomic assessment and multi-objective optimization of a novel CCHP and multi-effect desalination (MED) hybrid system driven by an internal-reforming solid oxide fuel cell (IR-SOFC) and a micro gas turbine (MGT) are presented to comprehensively evaluate the hybrid system performance in this research. Firstly, the sensitivity analysis of system key design parameters such as steam to carbon ratio, compressor pressure ratio, pinch point temperature difference, motive steam pressure of MED and inlet pressure of ORC turbine on energy, exergy, economic, and thermoeconomic performance is investigated. It is indicated from the analysis results that the proposed hybrid system could produce power, cooling, heating and potable water which are 300.0 kW, 7.358 kW, 8.757 kW and 0.1715 kg/s, respectively.The system total cost and total cost per unit exergy are $9.838/h and $14.75/GJ under the design condition. A multi-objective optimization by using NSGA-II method is further implemented to obtain the ideal system design parameters and optimal system exergy efficiency, freshwater production, and total cost per unit exergy by setting four groups of different weights to these three objectives.The three-dimensional and two-dimensional Pareto frontier curves of the optimization results are depicted to reveal the relations between the objectives. It is validated that the system exergy efficiency and the system total cost per unit exergy are conflicted with the freshwater production.CCHP, micro gas turbine, multi-objective optimization, solid oxide fuel cell, thermoeconomic assessment | INTRODUCTIONCombined cooling, heating, and power (CCHP) system has been appreciated as a promising technology in a wider variety of applications such as hospitals, commercial buildings and campuses. [1][2][3][4] The CCHP system is capable of using gas turbine, combustion engines, solar tower and fuel cells as its prime movers. 5,6 Solid oxide Abbreviations: CCHP, combined cooling heating and power; COP, coefficient of performance; GOR, gain output ratio; IR-SOFC, internal reforming solid oxide fuel cell; MED, multieffect desalination; MGT, micro gas turbine; ORC, organic Rankine cycle; PH, preheater; SER, steam ejector refrigerator; TVC, thermal vapor compressor; WHB, waste heat boiler.

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“…An ejector refrigeration cycle is used to provide some coldness by recovering the lost heat of a regenerative gas turbine cycle. The optimal values of the system's primary energy ratio, exergy efficiency, exergoeconomic criterion, and exergoenvironmental criterion are 76.9%, 30.8%, 58.4$ GJ −1 , and 42.7 kg GJ −1 , respectively, based on the multi‐objective optimization 11 …”

Section: Introductionmentioning

confidence: 99%

“…The optimal values of the system's primary energy ratio, exergy efficiency, exergoeconomic criterion, and exergoenvironmental criterion are 76.9%, 30.8%, 58.4$ GJ À1 , and 42.7 kg GJ À1 , respectively, based on the multi-objective optimization. 11 In the present study, detailed 4E analyses have comprehensively investigated the proposed systems' performance in different aspects.…”

mentioning

confidence: 99%

Comparative thermoeconomic optimization and exergoenvironmental analysis of an ejector refrigeration cycle integrated with a cogeneration system utilizing waste exhaust heat recovery

Fazeli

Zandi

Mofrad

et al. 2022

Env Prog and Sustain Energy

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Two cogeneration cycles based on gas turbines have been compared by means of thermoeconomic and environmental analyses. The analyzed cogeneration systems are gas turbine, organic Rankine cycle (GT + ORC) and an integrated system including gas turbine, organic Rankine cycle, and ejector refrigeration cycle (GT + ORC + ERC). This work has focused on environmental considerations and thermoeconomic evaluation to decrease destruction cost and environmental impacts. The examination of cycles is conducted from energy, exergy, exergoeconomic, and exergoenvironmental (4E) perspectives. A computer MATLAB program is used to generate the simulation results, and the REFPROP 9.1 database is utilized to get thermodynamic properties of the working fluids. The use of the refrigeration evaporator in GT + ORC + ERC increased energy and exergy efficiencies. Multi-objective optimization results indicate that the waste heat utilization in the trigeneration system is more effective in all aspects. In optimal conditions, the exergy efficiency and destruction cost of the GT + ORC + ERC system reached 40.76% and 151.95$ h À1 , respectively. Moreover, optimization is performed by means of energy efficiency and destruction environmental impact as objective functions, and the optimum values are obtained at 30.67% and 46,918.30 mpts h À1 , respectively.

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Design and multi-criteria optimisation of a trigeneration district energy system based on gas turbine, Kalina, and ejector cycles: Exergoeconomic and exergoenvironmental evaluation

Cited by 77 publications

References 55 publications

Combined direct oxy‐combustion and concentrated solar supercritical carbon dioxide power system—Thermo, exergoeconomic, and quadruple optimization analyses

Combined direct oxy‐combustion and concentrated solar supercritical carbon dioxide power system—Thermo, exergoeconomic, and quadruple optimization analyses

Thermoeconomic assessment and multiobjective optimization of a CCHP and MED hybrid system based on IR‐SOFC / MGT

Comparative thermoeconomic optimization and exergoenvironmental analysis of an ejector refrigeration cycle integrated with a cogeneration system utilizing waste exhaust heat recovery

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