Finite sum based thermoeconomic and sustainable analyses of the small scale LNG cold utilized power generation systems

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

doi:10.1016/j.apenergy.2017.12.088

Cited by 9 publications

(8 citation statements)

References 51 publications

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“…Research conducted in this paper shows that a relatively small LNG plant can be a relatively good investment. Similar results can be found in many articles concerning small-scale LNG plants with similar technology [21][22][23]84].…”

Section: Discussionsupporting

confidence: 88%

“…This kind of decentralization of LNG plants and use of biogas produced locally brings many benefits to the region itself, as well as to the entire European Union [20]. Local LNG plants were also discussed in other scientific papers [21][22][23][24]. Authors agree that the usage of local sources is an integral part of LNG plant sustainability.…”

Section: Introductionmentioning

confidence: 99%

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Economic and Technological Analysis of Commercial LNG Production in the EU

et al. 2019

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There is a global need to increase the production of alternative sources of energy due to many issues related to conventional sources, such as environmental degradation or energy security. In this paper, decentralized liquefied natural gas production is analyzed. Liquefied natural gas, according to the analysis, can be considered a viable alternative even for decentralized applications Design and economic analysis of a small-scale biogas LNG plan together with the necessary technology and economic evaluation are presented in the paper. The results show that a project of the proposed size (EUR 3 million) offers a relatively good profitability level. Specifically, the net present value of the project is mostly positive (around EUR 0.1 million up to EUR 0.8 million). Therefore, based on the research, small LNG plants operating across the continent can be recommended for the processing of local sources of biogas.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Economic and Technological Analysis of Commercial LNG Production in the EU

et al. 2019

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“…However, the fully dynamic operations are generally hard‐to‐understand and difficult‐to‐analyze processes, and they may have the long response time to understand the dynamic behavior . To overcome the above‐mentioned challenges, the finite‐sum thermoeconomic approach was proposed in one of our previous studies . In the finite‐sum approach, the steady model is constituted with the hourly climatic data at first; the hourly thermoeconomic results are then combined in a thermoeconomic vector to observe the daily performance.…”

Section: Modelingmentioning

confidence: 99%

“…63 To overcome the above-mentioned challenges, the finite-sum thermoeconomic approach was proposed in one of our previous studies. 45 In the finite-sum approach, the steady model is constituted with the hourly climatic data at first; the hourly thermoeconomic results are then combined in a thermoeconomic vector to observe the daily performance. Similarly, the daily thermoeconomic performances can be combined in a thermoeconomic matrix to monitor the weekly performance.…”

Section: Finite-sum Lcita Modelingmentioning

confidence: 99%

“…In the single and CO 2 ‐reduced combined systems, the exhaust streams of microturbine (streams 9 and 10) are sent to the heat exchanger for the hot water production (heat exchanger 2 in the CO 2 ‐reduced combined system); however, the exhaust stream of microturbine (stream 9) is sent to the phase change material (PCM) thermal energy storage tank in the combined system. The molten salt (40% KNO 3 , 60% NaNO 3 ) with 493.15‐K melting temperature is used in the PCM tank to store thermal energy from the exhaust gas. The outlet stream, stream 10, enters the heat exchanger for the hot water production in the combined system.…”

Section: System Descriptionmentioning

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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