Experimental study on liquid/solid phase change for cold energy storage of Liquefied Natural Gas (LNG) refrigerated vehicle

Tan, Hongbo; Li, Yanzhong; Tuo, Hanfei; Zhou, Maosheng; Tian, Binbin

doi:10.1016/j.energy.2010.01.006

Cited by 62 publications

(18 citation statements)

References 26 publications

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“…We simulate 1000 price scenarios of three weeks length, and use an annual, exogenous discount rate of 6%. These parameters are summarised in Table ( 6).…”

Section: Resultsmentioning

confidence: 99%

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Linepack storage valuation under price uncertainty

Arvesen

Medbø

Fleten

et al. 2013

Energy

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Natural gas flows in pipelines as a consequence of the pressure difference at the inlet and outlet. Adjusting these pressures makes it possible to inject natural gas at one rate and withdraw at a different rate, hence using the pipeline as storage as well as transport. We study the value of using the so called pipeline linepack as a short-term gas storage and how this functionality may offset the discrepancy between the low flexibility in take-or-pay contracts and the high inherent flexibility of a gas fired power plant. To value the storage option, we consider a cycling power plant facing volatile power prices while purchasing gas on a take-or-pay contract. We estimate a Markov regime-switching model for power prices and a mean reverting jump diffusion model for gas prices. Applying Least Squares Monte Carlo simulation to the operation of the power plant, we find that the storage option indeed has significant value for the plant, enabling it to better exploit the sometimes extreme price fluctuations. Finally, we show how power price volatility and * Corresponding author. Tel.: +47 73591296; fax: +47 73591045Email addresses: oystein.arvesen@bcg.com (Ø. Arvesen), vegard.medbo@gmail.com (V. Medbø), stein-erik.fleten@iot.ntnu.no (S.-E. Fleten), asgeir.tomasgard@iot.ntnu.no (A. Tomasgard), sjur.westgaard@iot.ntnu.no (S. Westgaard) Postprint version. Published in Energy 52(1), 155-164, 2013. DOI August 30, 2017 jump frequency are the main value drivers, and that the size of the storage increases the value up to a point where no additional flexibility is used.

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“…We simulate 1000 price scenarios of three weeks length, and use an annual, exogenous discount rate of 6%. These parameters are summarised in Table ( 6).…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, LNG plants have high storage costs since the gas needs to be cooled [6]. The pipeline exit point is usually situated at a major market hub.…”

Section: Introductionmentioning

confidence: 99%

Linepack storage valuation under price uncertainty

Arvesen

Medbø

Fleten

et al. 2013

Energy

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“…He et al [5] have put up with a novel process to liquefy the pipeline natural gas by utilizing its available exergy. An experimental investigation of the cold storage with liquid/solid phase change of water has been conducted based on the cold energy recovery of LNG refrigerated vehicles [6]. Wang et al [7] have performed a thermodynamic-analysis-based study of the minimization of the power consumption of a typical natural gas liquefaction process.…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of a Boil-off Gas Re-condensation Process with Pre-cooling at LNG Terminals

Cui¹,

Yuan²,

Song³

et al. 2015

Int. J. Thermo

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Since liquefied natural gas (LNG) is stored at a temperature of about -160°C under ambient pressure, it is unable to avoid unexpected generation of boil-off gas (BOG) from LNG storage tanks due to heat transfer from the surroundings to the cryogenic system. Reasonable and effective treatment of BOG, can not only reduce the waste of energy at LNG terminals, but also guarantee the safety and stability of the system. This paper puts up with a novel process to condense the double-stage pre-cooled and compressed BOG by means of heat transfer with LNG. With the aim of minimizing the total power consumption, Aspen HYSYS is employed to simulate and optimize the process. It is indicated that system performance has been improved in comparison with the direct compression process and the re-condensation process with single-stage pre-cooling. Engineering issues about this process are discussed, simultaneously.

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“…Many authors have reported the possibility of utilizing LNG cold exergy [12][13][14]. LNG can be a source of cooling power [15][16][17]. The cold energy from LNG regasification can be used in the air separation process [18], the freeze desalination process [19], or to improve the capacity of Adsorbed Natural Gas (ANG) tanks [1].…”

Section: Introductionmentioning

confidence: 99%

Exergetic Analysis, Optimization and Comparison of LNG Cold Exergy Recovery Systems for Transportation

Dorosz

Wojcieszak

Malecha

2018

Entropy

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LNG (Liquefied Natural Gas) shares in the global energy market is steadily increasing. One possible application of LNG is as a fuel for transportation. Stricter air pollution regulations and emission controls have made the natural gas a promising alternative to liquid petroleum fuels, especially in the case of heavy transport. However, in most LNG-fueled vehicles, the physical exergy of LNG is destroyed in the regasification process. This paper investigates possible LNG exergy recovery systems for transportation. The analyses focus on "cold energy" recovery systems as the enthalpy of LNG, which may be used as cooling power in air conditioning or refrigeration. Moreover, four exergy recovery systems that use LNG as a low temperature heat sink to produce electric power are analyzed. This includes single-stage and two-stage direct expansion systems, an ORC (Organic Rankine Cycle) system, and a combined system (ORC + direct expansion). The optimization of the above-mentioned LNG power cycles and exergy analyses are also discussed, with the identification of exergy loss in all components. The analyzed systems achieved exergetic efficiencies in the range of 20% to 36%, which corresponds to a net work in the range of 214 to 380 kJ/kg LNG .

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Experimental study on liquid/solid phase change for cold energy storage of Liquefied Natural Gas (LNG) refrigerated vehicle

Cited by 62 publications

References 26 publications

Linepack storage valuation under price uncertainty

Linepack storage valuation under price uncertainty

Performance Improvement of a Boil-off Gas Re-condensation Process with Pre-cooling at LNG Terminals

Exergetic Analysis, Optimization and Comparison of LNG Cold Exergy Recovery Systems for Transportation

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