Thermodynamic analysis of a liquid air energy storage system

Guizzi, Giuseppe Leo; Manno, Michele; Tolomei, Ludovica Maria; Vitali, Ruggero Maria

doi:10.1016/j.energy.2015.10.030

Cited by 239 publications

(104 citation statements)

References 17 publications

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“…Liquid air energy storage (LAES) and pumped thermal electricity storage (PTES) are two emerging grid scale thermal storage technologies, which are good solutions for the intermittency and instability of electricity from renewable energy sources [1][2][3]. Cryogenictemperature cold storage is key to improving the overall performance of LAES and PTES systems [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Thermo-mechanical analysis of microcapsules containing phase change materials for cold storage

Tchuenbou-Magaia

Al‐Duri

et al. 2018

Applied Energy

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Microencapsulated phase change material slurries (MEPCMSs) offer a potentially efficient and flexible solution for cryogenic-temperature cold storage. In this paper, the phase change material (PCM) microcapsules prepared to form MEPCMSs for cryogenictemperature cold storage consist of Dowtherm J (DJ) as core material and melamine formaldehyde (MF) as primary shell material. DJ is an aromatic mixture with diethylbenzene as the main component. Composite shell materials are adopted to avoid cracking by adding aluminium oxide (Al 2 O 3) nanoparticles or copper (Cu) coating into/on MF shell. In order to explore the heat transfer behaviour and mechanical stability of the microcapsules during the solidification process of PCM, a thermo-mechanical model is established by taking into account of energy conservation, pressure-dependent solid-liquid equilibria, Lamé's equations and buckling theory. Based on the proposed model, the effects of shell thickness, shell compositions and microcapsule size are therefore studied on the variations of pressure difference, freezing point, and latent heat. The cause of shell deformation is clearly explained and the shell buckling modes are predicted using the model, which agree well with the experimental observations. The critical core/shell size ratios of avoiding buckling are proposed for the microcapsules with different compositions. Simultaneously incorporation of Al 2 O 3 nanoparticles and Cu coating into/on MF shell can markedly enhance the resistant to buckling. In addition, special attention is paid to cold energy storage capacity of MEPCMSs, which has considerable superiority compared to packed pebble beds.

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Section: Introductionmentioning

confidence: 99%

Thermo-mechanical analysis of microcapsules containing phase change materials for cold storage

Tchuenbou-Magaia

Al‐Duri

et al. 2018

Applied Energy

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“…Similarly, Antonelli et al theoretically evaluated that the round‐trip efficiency of the LAES was only about 10% when the atmosphere was the heat/cold sink, while the efficiency could be significantly improved by using other high temperature heat sources. Thus, the utilization of the heat/cold energy is critical for improving the total performance of the LAES systems . Supercritical CAES can be regarded as a specific type of LAES.…”

Section: Mre Storagementioning

confidence: 99%

“…Thus, the utilization of the heat/cold energy is critical for improving the total performance of the LAES systems. [113][114][115] Supercritical CAES can be regarded as a specific type of LAES. Guo et al 116 conducted a theoretical study on supercritical CAES system.…”

Section: Subterranean Phsmentioning

confidence: 99%

A review of marine renewable energy storage

et al. 2019

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Summary Marine renewable energies are promising enablers of a cleaner energy future. Some technologies, like wind, are maturing and have already achieved commercial success. Similar to their terrestrial counterparts, marine renewable energy systems require energy storage capabilities to achieve the flexibility of the 21st century grid demand. The unique difficulties imposed by a harsh marine environment challenge the unencumbered rise of marine renewable energy generation and storage systems. In this study, the fundamentals of marine renewable energy generation technologies are briefed. A comprehensive review and comparison of state‐of‐the‐art novel marine renewable energy storage technologies, including pumped hydro storage (PHS), compressed air energy storage (CAES), battery energy storage (BES), hydrogen energy storage (HES), gravity energy storage (GES), and buoyancy energy storage (ByES), are conducted. The pros and cons, and potential applications, of various marine renewable energy storage technologies are also compiled. Finally, several future trends of marine renewable energy storage technologies are connoted.

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“…The list of all assumed simulation parameters (taken from the available literature as an average of the values published in papers [21,39,40]) is provided in Table 2. The considered systems were assumed to have an ambient heat source.…”

Section: Process Modelling and Assumptionsmentioning

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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Thermodynamic analysis of a liquid air energy storage system

Cited by 239 publications

References 17 publications

Thermo-mechanical analysis of microcapsules containing phase change materials for cold storage

Thermo-mechanical analysis of microcapsules containing phase change materials for cold storage

A review of marine renewable energy storage

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

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