A study on performance of a liquid air energy storage system with packed bed units

Peng, Hao; Shan, Xuekun; Yang, Yu; Ling, Xiang

doi:10.1016/j.apenergy.2017.11.045

Cited by 130 publications

(44 citation statements)

References 25 publications

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“…In general, different assumptions are made in the different references, e.g., ideal dry air was assumed, heat and pressure losses in most components as well as heat losses in the cold box were neglected [12], or assumed lower than 8% [6] which is why comparing the various configurations is problematic.…”

Section: State Of the Artmentioning

confidence: 99%

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Exergy-Based and Economic Evaluation of Liquefaction Processes for Cryogenics Energy Storage

et al. 2019

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Cryogenics-based energy storage (CES) is a thermo-electric bulk-energy storage technology, which stores electricity in the form of a liquefied gas at cryogenic temperatures. The charging process is an energy-intensive gas liquefaction process and the limiting factor to CES round trip efficiency (RTE). During discharge, the liquefied gas is pressurized, evaporated and then super-heated to drive a gas turbine. The cold released during evaporation can be stored and supplied to the subsequent charging process. In this research, exergy-based methods are applied to quantify the effect of cold storage on the thermodynamic performance of six liquefaction processes and to identify the most cost-efficient process. For all liquefaction processes assessed, the integration of cold storage was shown to multiply the liquid yield, reduce the specific power requirement by 50–70% and increase the exergetic efficiency by 30–100%. The Claude-based liquefaction processes reached the highest exergetic efficiencies (76–82%). The processes reached their maximum efficiency at different liquefaction pressures. The Heylandt process reaches the highest RTE (50%) and the lowest specific power requirement (1021 kJ/kg). The lowest production cost of liquid air (18.4 €/ton) and the lowest specific investment cost (<700 €/kWchar) were achieved by the Kapitza process.

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Section: State Of the Artmentioning

confidence: 99%

“…Parameters of CES systems presented in[5,8,9,12,[14][15][16][17][18][19]: Liquefaction processes, liquefaction pressure p char , liquid yield γ, cold storage configuration, discharge pressure p dis and round trip efficiencyη RTE .…”

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confidence: 99%

Exergy-Based and Economic Evaluation of Liquefaction Processes for Cryogenics Energy Storage

et al. 2019

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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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“…(She et al, 2017b) studied the possibilities of improving the round trip efficiency of LAES through effective utilization of heat of compression and their thermodynamic analyses showed that the round-trip efficiency could be enhanced 9-12% by using the excess heat of compression as a heat source to power an organic Rankine cycle. (Peng et al, 2018a) analysed the performance of a LAES system with packed bed units and according to their results, a LAES system may probably be considered as a viable option for grid-scale (>100 MW) electric energy storage. Similar studies include (She et al, 2017a), (Borri et al, 2017), (Hüttermann and Span, 2017) and many others.…”

Section: Gridmentioning

confidence: 99%

Liquid air energy storage: Price arbitrage operations and sizing optimization in the GB real-time electricity market

Lin

Bai

et al. 2019

Energy Economics

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A study on performance of a liquid air energy storage system with packed bed units

Cited by 130 publications

References 25 publications

Exergy-Based and Economic Evaluation of Liquefaction Processes for Cryogenics Energy Storage

Exergy-Based and Economic Evaluation of Liquefaction Processes for Cryogenics Energy Storage

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

Liquid air energy storage: Price arbitrage operations and sizing optimization in the GB real-time electricity market

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