Proposal for a high efficiency LNG power-generation system utilizing waste heat from the combined cycle

Hisazumi, Yoshinori; Yamasaki, Yudai; Sugiyama, Shigeru

doi:10.1016/s0306-2619(98)00034-8

Cited by 90 publications

(22 citation statements)

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“…There have been a lot of researches focusing on improving the efficiency of the power generation cycles, and many advanced power generation cycles utilizing LNG cold energy were proposed. In this review, only the researches after the year of 2010 is discussed, and some previous research can be referred to (Griepentrog et al, 1976;Angelino et al, 1978;Krey, 1980;Najjar et al, 1991;Najjar et al, 1993;Wong, 1994;Kim et al, 1995;Chiesa et al, 1997;Hisazumi et al, 1998;Miyazaki et al, 2000;Deng et al, 2004;Kaneko et al, 2004;Wang et al, 2004;Zhang et al, 2006;Shi et al, 2007;Bai et al, 2008;Lu et al, 2009;Shi et al, 2010;Tsatsaronis et al, 2010).…”

Section: Recent Advanced Power Generation Cycles Using Lng Cold Energymentioning

confidence: 99%

Review on recent liquefied natural gas cold energy utilization in power generation cycles

Jia

Dai³

2018

Adv. Geo-Energy Res.

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Liquefied natural gas (LNG) needs to be gasified before supplied to the users, and considerable amount of cold energy, about 830 kJ/kg, will be released during this process. Recovery of LNG cold energy bears significance of energy-saving and environmental protection. Among the many ways of using LNG cold energy, power generation is the most effective and suitable one for large-scale applications. Many novel power generation cycles have been designed for utilizing LNG cold energy so far. This paper reviews the recent researches on LNG cold energy utilization in power generation, and discusses 15 novel power generation cycles utilizing LNG cold energy.

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Section: Recent Advanced Power Generation Cycles Using Lng Cold Energymentioning

confidence: 99%

Review on recent liquefied natural gas cold energy utilization in power generation cycles

Jia

Dai³

2018

Adv. Geo-Energy Res.

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“…• Condenser in a steam power plant as heat source recuperated Freon and methane Rankine cycles: Hisazumi et Al [30]. …”

Section: References For Lng Regasificationmentioning

confidence: 99%

System Analysis of Waste Heat Applications With LNG Regasification

́lez-Salazar

Belloni

Finkenrath

et al. 2009

Volume 4: Cycle Innovations; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine

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The combination of the continuously growing demand of energy in the world, the depletion of oil and its sharp price increase, as well as the urgent need for cleaner and more efficient fuels have boosted the global trade of liquefied natural gas (LNG). Nowadays, there is an increasing interest on the design philosophy of the LNG receiving terminals, due to the fact that the existing technologies either use seawater as heating source or burn part of the fuel for regasifying LNG, thus destroying the cryogenic energy of LNG and causing air pollution or harm to marine life. This investigation addresses the task of developing novel systems able to simultaneously regasify LNG and generate electric power in the most efficient and environmentally friendly way.Existing and proposed technologies for integrated LNG regasification and power generation were identified and simple, efficient, safe and compact alternatives were selected for further analysis. A baseline scenario for integrated LNG regasification and power generation was established and simulated, consisting of a cascaded Brayton configuration with a typical small gas turbine as topping cycle and a simple closed Brayton cycle as bottoming cycle. Various novel configurations were created, modeled and compared to the baseline scenario in terms of LNG regasification rate, efficiency and power output. The novel configurations include closed Rankine and Brayton cycles for the bottoming cycle, systems for power augmentation in the gas turbine and combinations of options. A study case with a simple and compact design was selected, preliminarily designed and analyzed according to characteristics and costs provided by suppliers. The performance, costs and design challenges of the study case were then compared to the baseline case. The results show that the study case causes lower investment costs and a smaller footprint of the plant, at the same time offering a simple design solution though with substantially lower efficiencies.

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“…In advanced technologies the LNG can be used as a cold source in the direct production of electric energy (Liu & You, 1999). Hisazumi et al (1998) investigated possibilities of using waste heat from associated gas-operated power plants for LNG evaporation, without marine water. The source of heat in the Rankine cycle is condensation enthalpy from a steam turbine and heat of waste gases in the waste boiler.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Processes Involving Liquefied Natural Gas at the LNG Receiving Terminals / Procesy termodynamiczne z wykorzystaniem skroplonego gazu ziemnego w terminalach odbiorczych LNG

Łaciak¹

2013

Archives of Mining Sciences

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The increase in demand for natural gas in the world, cause that the production of liquefied natural gas (LNG) and in consequences its regasification becoming more common process related to its transportation. Liquefied gas is transported in the tanks at a temperature of about 111K at atmospheric pressure. The process required to convert LNG from a liquid to a gas phase for further pipeline transport, allows the use of exergy of LNG to various applications, including for electricity generation. Exergy analysis is a well known technique for analyzing irreversible losses in a separate process. It allows to specify the distribution, the source and size of the irreversible losses in energy systems, and thus provide guidelines for energy efficiency. Because both the LNG regasification and liquefaction of natural gas are energy intensive, exergy analysis process is essential for designing highly efficient cryogenic installations.Keywords: LNG, liquefied natural gas, exergy, thermodynamic cycle, unloading terminal, regasification Wzrost zapotrzebowania na gaz ziemny na świecie powoduje, że produkcja skroplonego gazu ziemnego (LNG), a w konsekwencji jego regazyfikacja, staje się coraz bardziej powszechnym procesem związanym z jego transportem. Skroplony gaz transportowany jest w zbiornikach w temperaturze około 111K pod ciśnieniem atmosferycznym. Przebieg procesu regazyfikacji niezbędny do zamiany LNG z fazy ciekłej w gazową dla dalszego transportu w sieci, umożliwia wykorzystanie egzergii LNG do różnych zastosowań, między innymi do produkcji energii elektrycznej. Analiza egzergii jest znaną techniką analizowania nieodwracalnych strat w wydzielonym procesie. Pozwala na określenie dystrybucji, źródła i wielkości nieodwracalnych strat w systemach energetycznych, a więc ustalić wytyczne dotyczące efektywnego zużycia energii. Ponieważ zarówno regazyfikacja LNG jak i skraplanie gazu ziemnego są energochłonne, proces analizy egzergii jest niezbędny do projektowania wysoce wydajnych instalacji kriogenicznych.

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Proposal for a high efficiency LNG power-generation system utilizing waste heat from the combined cycle

Cited by 90 publications

References 1 publication

Review on recent liquefied natural gas cold energy utilization in power generation cycles

Review on recent liquefied natural gas cold energy utilization in power generation cycles

System Analysis of Waste Heat Applications With LNG Regasification

Thermodynamic Processes Involving Liquefied Natural Gas at the LNG Receiving Terminals / Procesy termodynamiczne z wykorzystaniem skroplonego gazu ziemnego w terminalach odbiorczych LNG

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