Thermo-environmental and economic analysis of an integrated municipal waste-to-energy solid oxide fuel cell, gas-, steam-, organic fluid- and absorption refrigeration cycle thermal power plants

Owebor, K.; Oko, C.O.C.; Diemuodeke, Ogheneruona E.; Ogorure, Oreva Joe

doi:10.1016/j.apenergy.2019.02.032

Cited by 98 publications

(25 citation statements)

References 33 publications

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“…The global gasification reaction for biomass (wood) considered in this study is expressed in [18,19].…”

Section: Gasifier Modelmentioning

confidence: 99%

“…where C n H x O y N x is the chemical formulation, n i denotes molar composition for the ith element of the syngas, which is estimated from atomic, equilibrium reactions [19,33]. Similarly, the energy balance in the gasifier is described by Equation (47).…”

Section: Gasifier Modelmentioning

confidence: 99%

“…In contrast, the corresponding first and second law efficiencies of the biomass plant with electricity generation only were calculated at 11% and 13%, respectively. Other multi-generation system included the works of Reference [19] who considered the thermo-environmental and economic analysis of a combined integrated power generating cycle fired by municipal solid waste. The power generating cycle comprises a gas turbine, ORC, fuel cell, and a vapor absorption system.…”

Section: Introductionmentioning

confidence: 99%

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Exergoeconomic and Environmental Modeling of Integrated Polygeneration Power Plant with Biomass-Based Syngas Supplemental Firing

et al. 2020

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There is a burden of adequate energy supply for meeting demand and reducing emission to avoid the average global temperature of above 2 °C of the pre-industrial era. Therefore, this study presents the exergoeconomic and environmental analysis of a proposed integrated multi-generation plant (IMP), with supplemental biomass-based syngas firing. An in-service gas turbine plant, fired by natural gas, was retrofitted with a gas turbine (GT), steam turbine (ST), organic Rankine cycle (ORC) for cooling and power production, a modified Kalina cycle (KC) for power production and cooling, and a vapour absorption system (VAB) for cooling. The overall network, energy efficiency, and exergy efficiency of the IMP were estimated at 183 MW, 61.50% and 44.22%, respectively. The specific emissions were estimated at 122.2, 0.222, and 3.0 × 10−7 kg/MWh for CO2, NOx, and CO, respectively. Similarly, the harmful fuel emission factor, and newly introduced sustainability indicators—exergo-thermal index (ETI) and exergetic utility exponent (EUE)—were obtained as 0.00067, 0.675, and 0.734, respectively. The LCC of $1.58 million was obtained, with a payback of 4 years, while the unit cost of energy was estimated at 0.0166 $/kWh. The exergoeconomic factor and the relative cost difference of the IMP were obtained as 50.37% and 162.38%, respectively. The optimum operating parameters obtained by a genetic algorithm gave the plant’s total cost rate of 125.83 $/hr and exergy efficiency of 39.50%. The proposed system had the potential to drive the current energy transition crisis caused by the COVID-19 pandemic shock in the energy sector.

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“…The global gasification reaction for biomass (wood) considered in this study is expressed in [18,19].…”

Section: Gasifier Modelmentioning

confidence: 99%

Section: Gasifier Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exergoeconomic and Environmental Modeling of Integrated Polygeneration Power Plant with Biomass-Based Syngas Supplemental Firing

et al. 2020

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“…The total cost rate of the proposed system was 17.64 $/h. Owebor et al 14 studied a SOFC‐based system integrated with several subsystems, including a gasification unit, a GT, a ST, an ORC, and an absorption refrigeration cycle from thermo‐environmental and exergoeconomic standpoints. The unit cost of energy and the CO 2 emission rate of the proposed system were 0.018 $/kWh and 148.22 kg/MWh, respectively.…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomic and environmental investigation of an innovative poly‐generation plant driven by a solid oxide fuel cell for production of electricity, cooling, desalinated water, and hydrogen

et al. 2020

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Fuel cell and renewable-based poly-generation plants (PGPs) are proven as advanced technologies for multiple generation purposes. To limit the greenhouse gas emissions, an innovative PGP generating electricity, cooling, desalinated water, and hydrogen is proposed in the current study. The system consists of a solid oxide fuel cell as a prime mover integrated with a gas turbine, a biomass combustion chamber, an organic Rankine cycle, an ejector refrigeration cycle, a desalination unit, and a proton exchange membrane electrolyzer integrated with solar collectors. As the most effective tools for performance evaluation, exergoeconomic, and environmental analyses have been applied. The system produces electricity of 4.4 MW, refrigeration capacity of 0.16 MW, and desalinated water of 0.96 kg/s. The attained freshwater enters the electrolyzer during 12 daylight hours, leading to hydrogen and sanitary water generation with the values of 1.55 g/s and 0.94 kg/s, respectively. The cost per unit exergy and the total cost rate of the products are 11.28 $/GJ, 223 $/h, correspondingly. Carbon dioxide emission of the system is estimated to be 10.79 kmol/MWh. According to the evaluation, the total cost rate increases with increasing current density and fuel cell inlet temperature and decreasing fuel utilization factor.

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“…Energy, exergy, economic and environmental analysis of a proposed municipal waste driven power plant was assessed by Owebor et al [31] in 2019. Combustion chamber had the largest amount of exergy destruction rate of 37%.…”

Section: Introductionmentioning

confidence: 99%

4E Analysis of Power and Water Cogeneration Plant based on Integrated MED-TVC and RO Desalination Units

Modabber¹,

Manesh²

2020

International Journal of Thermodynamics

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In this study, integration of RO desalination unit with power and water cogeneration plant located in Qeshm Island in Iran has been investigated. The desalination unit exists in this plant is MED-TVC type. In this regard, energy, exergy, exergoeconomic, and exergoenvironmental (4E) analyses have been performed by developing a computer code using Matlab. Validation of thermodynamic data has been performed through comparing the results of modeling by Matlab with the simulation done in Thermoflex software and the real data gathered from the Qeshm cogeneration plant. The results show the acceptable accuracy of thermodynamic modeling. The exergoenvironmental analysis has been conducted based on Life Cycle Assessment (LCA). In this regard, the weight function of TVC is proposed in this paper based on technical data in different nominal sizes in order to estimate the environmental impacts of this component. The cogeneration plant produces 25.7 MW power, consuming 6 kg/s steam can lead to production of 51.7 kg/s desalinated water. The gained output ratio (GOR) is about 8.7 for the MEDTVC unit. The performance ratio (PR) of RO desalination unit which is added to the downstream of MED-TVC has been calculated about 0.5. Integrating RO desalination unit with MED-TVC enhances the production of fresh water by 255.132 ton per hour. Exergetic efficiency, total cost rate of the system and total environmental impact rate of the system has been calculated 46.86 %, 64.01 $/min and 29.49 pts/min, respectively. Since the largest share of exergy destruction rate of the system belongs to the gas cycle and also Qeshm Island has a warm and muggy climate, adding a chiller type air cooling system to inlet of air compressor can decrease the power demand of air compressor and fuel consumption of combustion chamber which makes the system more efficient and reduce the cost and environmental impact rate of the system.

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Thermo-environmental and economic analysis of an integrated municipal waste-to-energy solid oxide fuel cell, gas-, steam-, organic fluid- and absorption refrigeration cycle thermal power plants

Cited by 98 publications

References 33 publications

Exergoeconomic and Environmental Modeling of Integrated Polygeneration Power Plant with Biomass-Based Syngas Supplemental Firing

Exergoeconomic and Environmental Modeling of Integrated Polygeneration Power Plant with Biomass-Based Syngas Supplemental Firing

Exergoeconomic and environmental investigation of an innovative poly‐generation plant driven by a solid oxide fuel cell for production of electricity, cooling, desalinated water, and hydrogen

4E Analysis of Power and Water Cogeneration Plant based on Integrated MED-TVC and RO Desalination Units

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