Cold Energy Utilization in LNG Regasification System Using Organic Rankine Cycle and Trilateral Flash Cycle

Daniarta, Sindu; Imre, Attila R.

doi:10.3311/ppme.16668

Cited by 15 publications

(5 citation statements)

References 19 publications

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“…It was proven that each cold source has limitations in the characteristic, operating range, etc. In this modelling, it is also found that propane as a working fluid is still an excellent option to utilize the LNG cold energy at a certain temperature range, similar to the one found in an article [10]. The obtained discussion and modelling results report that, as an alternative fuel, DME appears to be a promising cooling fluid for the geothermal power system with low temperature geothermal sources as well as LNG to expand the operational range of the cycle and increase efficiency.…”

Section: Discussionsupporting

confidence: 75%

“…The energy input is needed to drive compressors during the liquefaction. In a study [10], it was proved that the consumed energy stored in the LNG can be represented as a cooling potential, which is called cold energy, and then recovered for further usage. After the natural gas is liquefied, it is ready to be efficiently transported by using any kind of transportation i.e., specialized ship, train, trucks, or pipelines because its volume shrinks up to 1/600.…”

Section: Dimethyl Ether Natural Gas Water and Air As Cooling Sourcesmentioning

confidence: 99%

“…As an alternative, many researchers have carried out studies on cold energy utilization in LNG regasification systems with different types of layouts such as cascade, direct expander, and combined one that has been carried out by some researchers [7][8] [9]. Besides, a study [10] have been conducted which results proved that simple ORC outperforms the Trilateral Flash cycle (TFC) and reported that from 26 LNG receiving terminals, including Cimalaya-Jawa 1 from Indonesia, basic ORC with propane as the working fluid may recover 320 MW from cold energy. This technology is favourable and can be implemented to recover cold energy from this fluid and also replace conventional regasification systems based on vaporizers.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Comparative Study of Cooling Sources in Organic Rankine Cycle for Low-Temperature Geothermal Heat Sources

Daniarta

Kolasiński

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Geothermal energy refers to ground heat sources exploited for many purposes (for example, generating electricity). A steam power plant, that uses water as a medium and operating on the Rankine cycle, is a prospective technology that can be used to generate electricity utilizing geothermal heat. However, due to the thermal properties of the applied working fluid, the steam power plant has the limitation that may not utilize cold source like liquefied dimethyl ether (DME) at the temperature of around -25 °C or the extreme one, like liquefied natural gas (LNG) at the temperature of around -160 °C. For this reason, it seems that RC using an organic working fluid (so-called ORC) is an appropriate technology to utilize heat sources of extremely low temperatures. Selected ORC working fluids are considered suitable to absorb the cold source. This paper reported the thermodynamic modelling analysis and a comparison of geothermal power systems exploiting air, water, LNG, and DME as the cooling medium of the ORC. The simple scheme of ORC is used for modelling, furthermore, the Trilateral Flash Cycle (TFC) is described as a comparative study. Thanks to the LNG technology, it is already mature enough, and the method of altering the phase into liquefied form is likely to store the energy (i.e., the power to liquid). In the liquefied form, natural gas can be easily distributed and transported at a certain distance. In this model system, the result shows that LNG and DME appear to be excellent options for increasing the operating range of ORC. The modelling result shows that combining propane (a working fluid inside the cycle) and LNG (a cooling source) has a wider operating range and is a good option to exploit low-temperature geothermal heat as a power generation system. Also, using DME for both cooling sources and the working fluid inside the geothermal power system employing ORC outperforms other ones. Taking advantage of using them as a cooling source is significantly boosting the potential deriving from low-temperature geothermal energy (i.e., below 90 °C) as promising sources in the future.

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Section: Discussionsupporting

confidence: 75%

Section: Dimethyl Ether Natural Gas Water and Air As Cooling Sourcesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Comparative Study of Cooling Sources in Organic Rankine Cycle for Low-Temperature Geothermal Heat Sources

Daniarta

Kolasiński

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Some HCs have been tested as working fluids in ORC systems to recover cold energy emitted during liquefied natural gas (LNG) regasification. Using Propane as a working fluid, it is possible to recover up to 332.06 MW of cold energy in the forthcoming LNG regasification system (2020-2023) using seawater as a heat source [35]. According to one research, the application of HCs and their mixture resulted in outstanding cycle performance [36].…”

Section: The Selection Of Working Fluidsmentioning

confidence: 99%

Sizing the Thermal Energy Storage Device Utilizing Phase Change Material (PCM) for Low-Temperature Organic Rankine Cycle Systems Employing Selected Hydrocarbons

et al. 2022

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Thermal energy storage (TES) looks to be a promising technology for recovering waste heat or other intermittent heat sources, especially if it is coupled with the organic Rankine cycle (ORC) system. This system may use a variety of heat storage materials, including solids, liquids, and phase change materials (PCM). This article discusses the use of PCM as a thermal energy storage material in TES systems coupled with ORC systems. Other TES configurations may be used in ORC; however, in this article, the TES is solely used in heat exchangers, i.e., evaporator and liquid heater. The goal of this research is to establish a dimensionless storage mass parameter for sizing TES-evaporator (TES-EVA) or TES-liquid heater (TES-LH) devices for ORCs. Furthermore, the model of this system was created in the MATLAB environment using the chosen hydrocarbons as ORC working fluids. The obtained modelling results provide a novel point of view that scientists and engineers may employ while developing the TES-EVA or TES-LH utilizing PCM for ORC.

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“…217 K can be easily reached in cryogenic cycles (for example using liquid methane, LNG as heat sink), see for example in Ref. [11], while 310 K (almost 33 Celsius) can be obtained by a good air cooling. It is important to remark, that in both cases, the shape of the curves would be the same by choosing higher minimal temperature, only the loops would be smaller and therefore the effect would be less remarkable.…”

Section: Introductionmentioning

confidence: 99%

The effect of recuperator on the efficiency of ORC and TFC with very dry working fluid

Ahmed

Imre

2021

MATEC Web Conf.

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Organic Rankine Cycles (ORC) and Trilateral Flash Cycles (TFC) are very similar power cycles; ideally, they have a reversible adiabatic (isentropic) compression, an isobaric heating, an isentropic expansion and an isobaric cooling. The main difference is that for ORC, the heating includes the full evaporation of the working fluid (prior expansion); therefore, the expansion starts in a saturated or dry vapour state, while for TFC, the heating terminates upon reaching the saturated liquid states. Therefore, for TFT, expansion liquid/vapour state (in bubbly liquid or in vapour dispersed with droplets), requiring a special two-phase expander. Being ORC a more “complete” cycle, one would expect that its thermodynamic efficiency is always higher than for a TFC, between the same temperatures and using the same working fluids. Surprisingly, it was shown that for very dry working fluids, the efficiency of TFC can exceed the efficiency of basic (i.e. recuperator- and superheater-free) ORC, choosing sufficiently high (but still subcritical) maximal cycle temperature. Therefore in these cases, TFC (having a simpler heat exchange unit for heating) can be a better choice than ORC. The presence of a recuperator can influence the situation; by recovering the proper percentage of the remaining heat (after the expansion), the efficiency of ORC can reach and even pass the efficiency of TFC.

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Cold Energy Utilization in LNG Regasification System Using Organic Rankine Cycle and Trilateral Flash Cycle

Cited by 15 publications

References 19 publications

A Comparative Study of Cooling Sources in Organic Rankine Cycle for Low-Temperature Geothermal Heat Sources

A Comparative Study of Cooling Sources in Organic Rankine Cycle for Low-Temperature Geothermal Heat Sources

Sizing the Thermal Energy Storage Device Utilizing Phase Change Material (PCM) for Low-Temperature Organic Rankine Cycle Systems Employing Selected Hydrocarbons

The effect of recuperator on the efficiency of ORC and TFC with very dry working fluid

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