Thermo-economic assessment of externally fired micro-gas turbine fired by natural gas and biomass: Applications in Italy

Pantaleo, Antonio; Camporeale, Sergio Mario; Shah, Nilay

doi:10.1016/j.enconman.2013.06.017

Cited by 95 publications

(30 citation statements)

References 49 publications

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“…Due to the low number of installed systems for externally fired gas turbines, the scaling factor cannot be estimated at a higher precision, currently. Thus, the estimated capital cost of a 15 kWth power plant with about 1.6 kWel net output (including generator efficiency) is estimated to be 33800-65300 Euro, considering the reference data from [21].…”

Section: Cost Estimationmentioning

confidence: 99%

“…By using economical capital scaling [47], capital costs can be calculated from different installations while considering scaling effects as in Equation (4): (4) where C is the capital cost of a plant of a capacity M, , are the base capital cost and capacity (consider [21]), and s is the dimensionless scale factor (0.6 ≤ s ≤ 0.8). Due to the low number of installed systems for externally fired gas turbines, the scaling factor cannot be estimated at a higher precision, currently.…”

Section: Cost Estimationmentioning

confidence: 99%

“…The literature shows that technical and economic studies have been done for plants in the range of 30-100 kW el , mainly for microscale. Typically, the discussion is about the use of EFGT in heat recovery, dealing with high-temperature heat exchangers, and thermal analysis for either biomass direct combustion or gasification [15][16][17][18][19][20][21][22]. Such technology has some advantages over the other systems; for example, greater flexibility in fuel type and lower cleaning and maintenance costs when compared with internal combustion gas turbines [23,24].…”

Section: Introductionmentioning

confidence: 99%

“…Another study was performed on the thermoeconomics of an EFGT cycle with two firing schemes-natural gas and biomass-with the plant designed to provide 100 kW el with the possibility of adjusting percentages of energy sources (natural gas (NG) and biomass) from 0% to 100%. The capital cost was determined to be 471,000 euros with operating costs (including biomass supply, ash discharge, and maintenance) of 69,750 euro/year when the biomass quota is 100% [21].…”

Section: Introductionmentioning

confidence: 99%

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Determination of Optimized Parameters for the Flexible Operation of a Biomass-Fueled, Microscale Externally Fired Gas Turbine (EFGT)

et al. 2016

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Biomass as a source of renewable energy is a promising solution for current problems in energy supply. Olive waste is considered as an interesting option, especially for Mediterranean countries. Within this paper, a microscale externally fired gas turbine (EFGT) technology is presented as a decentralized power plant, within the range of 15 kW th , based on olive residues. It was modeled by Aspen Plus 8.6 software to provide a sufficient technical study for such a plant. Optimized parameters for pressure ratio and turbine air-mass flow have been mapped for several loads to provide information for process control. For all cases, mechanical output, efficiency curves, and back-work ratio have been calculated. Using this information, typical plant sizes and an example of power production are discussed. Additionally, achievable energy production from olive waste is estimated on the basis of this data. The results of this study show that such a plant has an electrical efficiency of 5%-17%. This variation is due to the examination being performed under several combustion temperatures, actual load, heat exchanger temperatures, and heat transfer efficiency. A cost estimation of the discussed system showed an estimated capital cost of 33,800 to 65,300 € for a 15 kW th system.

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Section: Cost Estimationmentioning

confidence: 99%

Section: Cost Estimationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Determination of Optimized Parameters for the Flexible Operation of a Biomass-Fueled, Microscale Externally Fired Gas Turbine (EFGT)

et al. 2016

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“…In determining the exergetic costs of the micro cogeneration system, it is necessary to define and identify the production units of the system, while putting control volumes in the main components, as shown in Figure 2 which represent the units of the productive system (Pantaleo, Camporeale & Shah, 2013;Fazelpour & Morosuk, 2014). On applying the Theory of the Exergetic Cost (Lozano & Valero, 1993) on the system, the incidence matrix for the productive units could be expressed as shown in Table 2.…”

Section: Exergetic Costs Based On Exergetic Analysismentioning

confidence: 99%

<b>Techno-economic and Exergoeconomic Analysis of a micro cogeneration system for a residential use

Ochoa¹,

Dutra²,

Guerrero³

et al. 2016

Acta Sci. Technol.

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ABSTRACT. The aim of the study is to present an economic analysis of a micro cogeneration system using financial analysis (energy view) and exergoeconomic analysis (exergy view). This system uses a natural gas-fueled 30 kW microturbine to generate electricity, and to produce hot water by recovering energy from the waste heat in the exhaust gases by using a heat exchanger, which serves as the drive source of an absorption chiller with a nominal capacity of 35 kW. In the financial analysis economic indicators such as payback, net present value and internal rate of return were used to verify the economic feasibility of this system, while in the exergoeconomic analysis, the Theory of Exergetic Cost was used to determine the exergetic monetary costs. A thermodynamic model was developed on the EES-32 (Engineering Equation Solver) platform. On applying the financial analysis, the results showed that the micro cogeneration system is feasible with positive values of R$ 206,540.00 for NPV, 27% IRR and a 6-year payback. Based on the exergoeconomic analysis, the cogeneration system is also feasible since the monetary cost of the electricity is lower than that charged by the electricity company but this is only possible after the 5 th year.Keywords: net present value, IRR, payback, exergetic costs.Análise Tecno-econômica e Exergoeconomica de um sistema de microcogeração de para uso residencial RESUMO. Este trabalho tem como finalidade o estudo econômico de um sistema de microcogeração de energia utilizando a análise financeira (visão energética) e a análise exergoeconômica (visão exergética). Este sistema utiliza gás natural como combustível primário para o acionamento de uma microturbina de 30 kW para produzir eletricidade, e água quente pelo do reaproveitamento da energia do calor residual dos gases de escape por meio de um recuperador de calor, que serve como fonte de acionamento de um chiller de absorção de 35 kW de capacidade nominal. Na análise financeira foram utilizados os indicadores econômicos tais como: o payback, o valor presente liquido, e a taxa interna de retorno, para verificar a viabilidade econômica do sistema de microcogeração, enquanto na análise exergoeconômica, foi considerada a teoria de custos exergéticos para a determinação dos custos monetários exergéticos. Foi desenvolvido um modelo termodinâmico na plataforma EES-32 (Engineering Equation Solver). Da aplicação da análise financeira os resultados mostraram que o sistema de microcogeração é viável com valores positivos de R$ 206.540,00 de VPL, 27% de TIR, 6 anos de retorno do capital. A partir da análise exergoeconômica, o sistema de cogeração também mostrou-se viável já que o custo monetário da eletricidade é menor do fornecido pela companhia de eletricidade, mas isso é possível após o 5º ano.Palavras-chave: valor presente liquido, TIR, payback, custos exergéticos.

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Theoretical study of a downdraft gasifier, microturbine, and organic Rankine cycle fuelled by date molasses waste for distributed generation applications in Iraq

Abbas

Alhassany

Vera

2023

Biofuels Bioprod Bioref

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The main objective of this work is the modeling of a combined heat and power (CHP) system that transforms waste from manufacturing date molasses in the Babylon province in central Iraq into electrical and thermal energy. A compact CHP facility that uses date waste (pomace and pits) as a feedstock is the subject of theoretical modeling and simulation research. The planned power plant consists of a downdraft gasifier, a microturbine (MT), and an organic Rankine cycle engine (ORC) as a bottom unit to maximize electric generation by recovering the MT exhaust gas heat and achieving a maximum electric output. The net electric production is 361.68 kW (280 kW from the MT unit and 81.68 kW from the ORC unit). To determine the best‐working fluid for the ORC system as a whole, three working fluids, including isopentane, benzene, and R113, were investigated. The temperature difference between the heat source and the fluid's boiling point is a key factor in choosing a more appropriate ORC working fluid. Isopentane is the most suitable working fluid for CHP applications, according to the findings of the simulation. The electric efficiency achieved is 30%, and the overall efficiency of the CHP plant was 56.87% from the gasification of date pits. The simulation results showed a satisfactory producer gas lower calorific value of 3.92 MJ k‐g‐1 for date pomace and 4.65 MJ k‐g‐1 for date pits, and cold gasification efficiencies of 73% and 76% for pomace and pits, respectively. © 2023 Society of Industrial Chemistry and John Wiley & Sons Ltd.

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Thermo-economic assessment of externally fired micro-gas turbine fired by natural gas and biomass: Applications in Italy

Cited by 95 publications

References 49 publications

Determination of Optimized Parameters for the Flexible Operation of a Biomass-Fueled, Microscale Externally Fired Gas Turbine (EFGT)

Determination of Optimized Parameters for the Flexible Operation of a Biomass-Fueled, Microscale Externally Fired Gas Turbine (EFGT)

<b>Techno-economic and Exergoeconomic Analysis of a micro cogeneration system for a residential use

Theoretical study of a downdraft gasifier, microturbine, and organic Rankine cycle fuelled by date molasses waste for distributed generation applications in Iraq

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