Thermoeconomic assessment of a micro cogeneration system with LNG cold utilization

Kanbur, Barış Burak; Xiang, Liming; Dubey, Swapnil; Choo, Fook Hoong; Duan, Fei

doi:10.1016/j.energy.2017.04.071

Cited by 33 publications

(22 citation statements)

References 45 publications

(2 reference statements)

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“…After the required molar flow rates are calculated, the energy rates of the system streams in all the proposed designs can be found. Since the main focus of the current study is the enviroeconomic and thermoeconomic assessments, the details of the thermodynamic model are not presented, but they can be seen from Kanbur et al() for the single, combined, and CO 2 ‐reduced combined systems, respectively. After all the energy streams are calculated, the net generated work rate,

{\overset{W}{true}}_{n e t}

, can be obtained as given in Equations for the single, combined, and CO 2 ‐reduced combined systems in a sequence,

{\overset{W}{true}}_{n e t_{s i n g l e}} = {\overset{W}{true}}_{G T} - {\overset{W}{true}}_{C} - {\overset{W}{true}}_{L N G P u m p},

{\overset{W}{true}}_{n e t_{c o m b i n e d}} = {\overset{W}{true}}_{G T} + {\overset{W}{true}}_{S T} - {\overset{W}{true}}_{C} - {\overset{W}{true}}_{L N G P u m p},

{\overset{W}{true}}_{n e t_{C O 2 - r e d}} = {\overset{W}{true}}_{G T} + {\overset{W}{true}}_{S T} - {\overset{W}{true}}_{D C} - {\overset{W}{true}}_{C} - {\overset{W}{true}}_{L N G P u m p} .

…”

Section: Modelingmentioning

confidence: 99%

“…After the required molar flow rates are calculated, the energy rates of the system streams in all the proposed designs can be found. Since the main focus of the current study is the enviroeconomic and thermoeconomic assessments, the details of the thermodynamic model are not presented, but they can be seen from Kanbur et al 35,36,39 for the single, combined, and CO 2 -reduced combined systems, respectively. After all the energy streams are calculated, the net generated work rate, .…”

Section: Life-cycle-based Enviroeconomic Modelingmentioning

confidence: 99%

“…Up to now, our research group assessed different small‐scale LNG cold utilization systems from the viewpoints of thermodynamics, economics, environment, and conventional thermoeconomics. The first proposed design was called as the single system since it only includes a microturbine to generate power in the designed small‐scale LNG cold‐utilized power generation system . To improve the thermodynamic performance, a Stirling engine was integrated between the LNG vaporizer and waste heat of microturbine in the second system; hereby, the second system was called as the combined system .…”

Section: Introductionmentioning

confidence: 99%

“…The first proposed design was called as the single system since it only includes a microturbine to generate power in the designed small-scale LNG cold-utilized power generation system. 35 To improve the thermodynamic performance, a Stirling engine was integrated between the LNG vaporizer and waste heat of microturbine in the second system; hereby, the second system was called as the combined system. 36 After that, the LNG vaporizer was considered as the heat sink to cool down the compressor inlet air in the third system; therefore, it was called as the LNG cold-utilized inlet air-cooled system.…”

Section: Introductionmentioning

confidence: 99%

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Life‐cycle‐integrated thermoeconomic and enviroeconomic assessments of the small‐scale‐liquefied natural gas cold utilization systems

et al. 2019

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Summary Small‐scale‐liquefied natural gas (LNG) cold‐utilized power generation systems are the sustainable solutions in the rural and inland areas where the large‐scale power generation is infeasible. This study investigates three different small‐scale LNG cold‐utilized power generation systems, which are called as the single, combined, and carbon dioxide (CO2)–reduced combined systems according to their design details. The assessments are done according to the life‐cycle‐based enviroeconomic and life‐cycle‐integrated thermoeconomic assessment (LCiTA) models that are recently developed and new approaches, in order to better monitor their feasibilities in real operations. The life‐cycle‐based enviroeconomic assessment shows that the combined system has the lowest environmental payback period with 7.35 years that is nearly 6 months and 1 year lower than the single and CO2‐reduced combined systems, respectively. The LCiTA study deduces that the combined system has the minimum levelized product cost while the single system has the highest values. The integration of CO2 capture components increases the levelized product cost nearly by 16.0% in the combined design, but the levelized product cost value is still found lower than the single system. Moreover, the sustainability performance of the systems is evaluated according to the improved sustainability index calculated by the life‐cycle‐integrated fuel and destruction costs. The index value of the combined system is twice that of the single system. The multiobjective optimization study is performed in cases of closed operation rooms. The best trade‐off points are found in the close ambient air temperature range between 300.50 and 302.00 K. To observe the dynamic outdoor performance, the finite sum approach is applied for the LCiTA model. The highest fluctuations are seen for the CO2‐reduced combined system while the smallest fluctuations belong to the combined system.

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{\overset{W}{true}}_{n e t}

, can be obtained as given in Equations for the single, combined, and CO 2 ‐reduced combined systems in a sequence,

{\overset{W}{true}}_{n e t_{s i n g l e}} = {\overset{W}{true}}_{G T} - {\overset{W}{true}}_{C} - {\overset{W}{true}}_{L N G P u m p},

{\overset{W}{true}}_{n e t_{c o m b i n e d}} = {\overset{W}{true}}_{G T} + {\overset{W}{true}}_{S T} - {\overset{W}{true}}_{C} - {\overset{W}{true}}_{L N G P u m p},

{\overset{W}{true}}_{n e t_{C O 2 - r e d}} = {\overset{W}{true}}_{G T} + {\overset{W}{true}}_{S T} - {\overset{W}{true}}_{D C} - {\overset{W}{true}}_{C} - {\overset{W}{true}}_{L N G P u m p} .

…”

Section: Modelingmentioning

confidence: 99%

“…After the required molar flow rates are calculated, the energy rates of the system streams in all the proposed designs can be found. Since the main focus of the current study is the enviroeconomic and thermoeconomic assessments, the details of the thermodynamic model are not presented, but they can be seen from Kanbur et al 35,36,39 for the single, combined, and CO 2 -reduced combined systems, respectively. After all the energy streams are calculated, the net generated work rate, .…”

Section: Life-cycle-based Enviroeconomic Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Life‐cycle‐integrated thermoeconomic and enviroeconomic assessments of the small‐scale‐liquefied natural gas cold utilization systems

et al. 2019

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“…Kanbur et al [12] presentan una evaluación termodinámica de un sistema de microcogeneración. Los resultados muestran que las eficiencias exergéticas y energéticas son entre dos y tres veces mayores que el caso de generación de energía convencional.…”

Section: Introductionunclassified

Análisis energético, exergético y económico de un sistema de cogeneración: Caso para una planta azucarera de San Pablo

Llerena

2018

ings

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Los sistemas de cogeneración, debido a las numerosas ventajas que presentan, se han convertido en una tecnología bastante utilizada para la generación de energía. En estos procesos, la eficiencia es relativamente alta y las emisiones de gases de efecto invernadero son bajas.En este trabajo se realiza un estudio técnico y económico de un sistema de cogeneración para una planta azucarera en San Pablo. La primera y segunda ley de la termodinámica son aplicadas para el análisis técnico. Los costos de producción de la energía eléctrica y vapor producido son determinados en el análisis económico. En el dimensionamiento se analizan cuatro turbinas de gas que están en paridad térmica con el proceso. Los resultados muestran que la planta tiene una capacidad para producir \linebreak[4]148 MW de electricidad y 147 MW de vapor. Por un lado el análisis energético revela que la eficiencia de la planta es de 67 \%, mientras que el análisis exergético muestra que esta eficiencia es de 56 \%. Los resultados del análisis económico expresan que los precios de la electricidad y vapor producido son de 0,105 y 0,068 US\$/kWh, respectivamente.

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Combined heating, cooling, hydrogen, and power production

Amidpour¹,

Manesh²

2021

Cogeneration and Polygeneration Systems

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Thermoeconomic assessment of a micro cogeneration system with LNG cold utilization

Cited by 33 publications

References 45 publications

Life‐cycle‐integrated thermoeconomic and enviroeconomic assessments of the small‐scale‐liquefied natural gas cold utilization systems

Life‐cycle‐integrated thermoeconomic and enviroeconomic assessments of the small‐scale‐liquefied natural gas cold utilization systems

Análisis energético, exergético y económico de un sistema de cogeneración: Caso para una planta azucarera de San Pablo

Combined heating, cooling, hydrogen, and power production

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