Energy, exergy, environmental and economic analysis of an agricultural waste-to-energy integrated multigeneration thermal power plant

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

doi:10.1016/j.enconman.2018.05.093

Cited by 117 publications

(24 citation statements)

References 24 publications

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“…Equations required for the exergy analysis of the whole observed system and for each system component are ar-ranged in several tables in this sub-section. For each component, as well as for the whole observed system are defined equations for the calculation of exergy power input, exergy power output, exergy destruction (exergy power loss) and exergy efficiency, as a standard elements in any exergy analysis [55,56].…”

Section: Equations For the Exergy Analysis Of The Observed Co 2 Closementioning

confidence: 99%

Exergy analysis of marine waste heat recovery CO2 closed-cycle gas turbine system

et al. 2020

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This paper presents an exergy analysis of marine waste heat recovery CO2 closed-cycle gas turbine system. Based on the operating parameters obtained in system exploitation, it is performed analysis of each system component individually, as well as analysis of the whole observed system. While observing all heat exchangers it is found that combustion gases-CO2 heat exchangers have the lowest exergy destructions and the highest exergy efficiencies (higher than 92%). The lowest exergy efficiency of all heat exchangers is detected in Cooler (51.84%). Observed system is composed of two gas turbines and two compressors. The analysis allows detection of dominant mechanical power producer and the dominant mechanical power consumer. It is also found that the turbines from the observed system have much higher exergy efficiencies in comparison to compressors (exergy efficiency of both turbines is higher than 94%, while exergy efficiency of both compressors did not exceed 87%). The whole observed waste heat recovery system has exergy destruction equal to 6270.73 kW, while the exergy efficiency of the whole system is equal to 64.12% at the selected ambient state. Useful mechanical power produced by the whole system and used for electrical generator drive equals 11204.80 kW. The obtained high exergy efficiency of the whole observed system proves its application on-board ships.

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Section: Equations For the Exergy Analysis Of The Observed Co 2 Closementioning

confidence: 99%

Exergy analysis of marine waste heat recovery CO2 closed-cycle gas turbine system

et al. 2020

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“…General energy or exergy efficiency definition of any system or a control volume can be found in [79][80][81] and calculated by using an equation: .…”

Section: General Energy and Exergy Equations And Balancesmentioning

confidence: 99%

Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads

Anđelić

Mrzljak

Lorencin

et al. 2020

JMTS

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This paper present energy and exergy analysis of the main marine steam turbine, which is used for the commercial LNG (Liquefied Natural Gas) carrier propulsion, at four different loads. Energy analysis is performed by using four different methods. The presented analysis allows distinguishing advantages and disadvantages of all observed energy analysis methods and its comparison to exergy analysis of the same steam turbine. Each analysis is based on the measurement results obtained in main turbine exploitation conditions. Main turbine is composed of two cylinders – High Pressure Cylinder (HPC) and Low Pressure Cylinder (LPC). At low turbine loads, the dominant power producer is HPC, while at middle and high loads the dominant power producer is LPC. Energy analysis Method 1 which is based on the same principles as exergy analysis, should be avoided if the majority of turbine losses are not known. Other observed energy analysis methods can be applied in the analysis of any steam turbine, with a note that increase in ideal (isentropic) steam expansion process divisions will result with an increase in energy losses and with a decrease in energy efficiency. Energy analysis Method 2 which consist of only one ideal (isentropic) steam expansion process, for the whole turbine and at all observed loads, results with the lowest energy losses (in the range between 639.98 kW and 6434.17 kW) as well as with the highest energy efficiency (in a range between 53.70% and 79.40%) in comparison to other applicable energy analysis methods. For the observed loads, whole main turbine exergy destruction is in range from 608.64 kW to 5922.86 kW, while the exergy efficiency range of the whole turbine is between 54.94% and 80.73%. Exergy analysis and all three applicable energy analysis methods show that increase in the main turbine load results with simultaneous increase in turbine losses and efficiencies (both energy and exergy).

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“…Os principais equipamentos nesse sistema são: pilha de combustível de óxido sólido, turbina a gás e turbina a vapor. O menor valor obtido para aquecimento do syngas é estimado em 23,47 MJ / kg e a eficiência energética e exergética de 63,62 e 58,46% (OGORURE et al, 2018).…”

Section: Produção De Syngas E As Plantas De Ciclo Combinado Com Gunclassified

Influência Da Relação De Pressão E Fração De Ar Extraída Do Compressor No Arrefecimento Das Pás De Turbinas a Gás

Venâncio¹,

Marconi²,

Monhol³

2019

SODEBRAS

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projeto de extensão com decorrências no contexto contemporâneo de consumo. Para isso, foi realizada uma análise por meio das confluências entre a literatura e o arsenal documental do projeto para sua caracterização extensionistas. Observou-se, a partir da pesquisa, que o Clube de Trocas tem possibilitado a ressignificação do consumo e a mitigação de suas consequências, pautando assim a construção de uma nova epistemologia benéfica e solidária. Além disso, o mesmo tem se apresentado como um espaço potencial para a formação coletiva que propicia a experimentação e a vivência de outra dinâmica de consumo, direta, critica e socializadora.

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Energy, exergy, environmental and economic analysis of an agricultural waste-to-energy integrated multigeneration thermal power plant

Cited by 117 publications

References 24 publications

Exergy analysis of marine waste heat recovery CO2 closed-cycle gas turbine system

Exergy analysis of marine waste heat recovery CO2 closed-cycle gas turbine system

Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads

Influência Da Relação De Pressão E Fração De Ar Extraída Do Compressor No Arrefecimento Das Pás De Turbinas a Gás

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