Open Accumulator Isothermal Compressed Air Energy Storage (OA‐ICAES) System

Li, Perry Y.; Loth, Eric; Qin, Chao; Simon, Terrence W.; Ven, James D. Van de

doi:10.1002/9781119239390.ch20

Cited by 6 publications

(7 citation statements)

References 22 publications

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“…75 Isothermal CAES is an evolving technology in which compression of air aim to be isothermal and reversible. 76 Isothermal CAES is technically and commercially impractical since it demands constant heat removal from the air during the compression cycle and continual heat addition during the expansion cycle to maintain an isothermal process. 77 Although, at present there are no isothermal CAES deployments accessible anywhere in the world, various viable solutions based on reciprocating equipment with a cycle efficiency of 70% to 80% have been proposed.…”

Section: Compressed Air Energy Storagementioning

confidence: 99%

“…Isothermal CAES is an evolving technology in which compression of air aim to be isothermal and reversible 76 . Isothermal CAES is technically and commercially impractical since it demands constant heat removal from the air during the compression cycle and continual heat addition during the expansion cycle to maintain an isothermal process 77 .…”

Section: Selected Energy Storage Technologiesmentioning

confidence: 99%

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Recent advances of energy storage technologies for grid: A comprehensive review

Rahman

Kim

Hossain³

2022

Energy Storage

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Energy storage is an idea that dates back over two thousand years. Engineers, investors, and politicians are increasingly researching energy storage solutions in response to growing concerns about fossil fuels' environmental effects as well as the capacity and reliability of global power systems. Various energy storage technologies are explored in depth in this study, with a focus on their application to the energy storage of electric grids. Specific consideration is paid to a few chosen technologies including flywheel energy storage, pumped hydro energy storage, compressed air energy storage, thermal energy storage in molten salt, hydrogen energy storage, battery energy storages, and capacitor and supercapacitor energy storage. Furthermore, this article delves into the concept of energy storage, focusing on a comprehensive examination of various deployments of these technologies around the world. Some of the barriers to commercial adoption of energy storage technologies, as well as the future, are covered in the article’s conclusion.

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Section: Compressed Air Energy Storagementioning

confidence: 99%

Section: Selected Energy Storage Technologiesmentioning

confidence: 99%

Recent advances of energy storage technologies for grid: A comprehensive review

Rahman

Kim

Hossain³

2022

Energy Storage

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“…The open I-CAES system avoids the shortcomings of the low energy density of the closed systems, using two alternating cylinders to achieve a cyclic supply and release of the air. The concept of using the ocean as a heat source/sink has been proposed [47,48], which involves the utilisation of seawater in the liquid piston for air compression. In this 'open accumulator' , the compressed space has a high surface area, which makes high heat transfer and therefore high efficiency possible.…”

Section: Isothermal Caesmentioning

confidence: 99%

Progress and prospects of thermo-mechanical energy storage—a critical review

et al. 2021

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The share of electricity generated by intermittent renewable energy sources is increasing (now at 26% of global electricity generation) and the requirements of affordable, reliable and secure energy supply designate grid-scale storage as an imperative component of most energy transition pathways. The most widely deployed bulk energy storage solution is pumped-hydro energy storage (PHES), however, this technology is geographically constrained. Alternatively, flow batteries are location independent and have higher energy densities than PHES, but remain associated with high costs and short lifetimes, which highlights the importance of developing and utilizing additional larger-scale, longer-duration and long-lifetime energy storage alternatives. In this paper, we review a class of promising bulk energy storage technologies based on thermo-mechanical principles, which includes: compressed-air energy storage, liquid-air energy storage and pumped-thermal electricity storage. The thermodynamic principles upon which these thermo-mechanical energy storage (TMES) technologies are based are discussed and a synopsis of recent progress in their development is presented, assessing their ability to provide reliable and cost-effective solutions. The current performance and future prospects of TMES systems are examined within a unified framework and a thermo-economic analysis is conducted to explore their competitiveness relative to each other as well as when compared to PHES and battery systems. This includes carefully selected thermodynamic and economic methodologies for estimating the component costs of each configuration in order to provide a detailed and fair comparison at various system sizes. The analysis reveals that the technical and economic characteristics of TMES systems are such that, especially at higher discharge power ratings and longer discharge durations, they can offer promising performance (round-trip efficiencies higher than 60%) along with long lifetimes (>30 years), low specific costs (often below 100 $ kWh−1), low ecological footprints and unique sector-coupling features compared to other storage options. TMES systems have significant potential for further progress and the thermo-economic comparisons in this paper can be used as a benchmark for their future evolution.

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“…A wind turbine powertrain that relies on hydraulic machinery could provide a decoupled transmission system. Many studies have been conducted on different HTSs and use this property to employ a conventional synchronous generator (SG) and eliminate the power converters [20][21][22][23][24][25][26][27][28][29][30]. In these studies, two strategies are applied to maintain the SG at synchronous speed with a small allowed variation and subsequently control the frequency: first, relying on the damping factor of the SG [20][21][22][23], and second, inserting an energy buffer between the wind turbine and SG [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have been conducted on different HTSs and use this property to employ a conventional synchronous generator (SG) and eliminate the power converters [20][21][22][23][24][25][26][27][28][29][30]. In these studies, two strategies are applied to maintain the SG at synchronous speed with a small allowed variation and subsequently control the frequency: first, relying on the damping factor of the SG [20][21][22][23], and second, inserting an energy buffer between the wind turbine and SG [24][25][26][27][28][29]. The former strategies can further reduce the efficiency of the synchronous generator due to the ever-changing nature of wind speed, and the latter necessitates the application of other extra subassemblies.…”

Section: Introductionmentioning

confidence: 99%

Quasi Self-Excited DFIG-Based Wind Energy Conversion System

Akbari

Izadian

Weissbach

2021

IEEE Trans. on Ind. Applicat.

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This paper introduces a new configuration of the DFIG-based wind energy conversion system (WECS) employing only a reduced-size Rotor Side Converter (RSC) in tandem with a supercapacitor. In the proposed structure, the Grid Side Converter (GSC) utilized in conventional DFIG-based WECSs is successfully eliminated. This is accomplished by employing the hydraulic transmission system (HTS) as a continuously variable and shaft decoupling transmission unit. This transforms the conventional constant-ratio drives by providing an opportunity to control the power flow through the generator's rotor circuit regardless of the wind turbine's shaft speed. This feature of HTS can be utilized to control the RSC power and ultimately regulate the supercapacitor voltage without a need for GSC. The proposed system is investigated and simulated in MATLAB Simulink at various wind speeds to validate the results and demonstrate the dynamic performance of the system.

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Open Accumulator Isothermal Compressed Air Energy Storage (OA‐ICAES) System

Cited by 6 publications

References 22 publications

Recent advances of energy storage technologies for grid: A comprehensive review

Recent advances of energy storage technologies for grid: A comprehensive review

Progress and prospects of thermo-mechanical energy storage—a critical review

Quasi Self-Excited DFIG-Based Wind Energy Conversion System

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