Dynamic simulation of a Re-compressed adiabatic compressed air energy storage (RA-CAES) system

Chen, Longxiang; Zhang, Liugan; Yang, Huipeng; Xie, Meina; Ye, Kai

doi:10.1016/j.energy.2022.125351

Cited by 30 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The simulations in this paper assume the conventional constant-pressure discharging that is employed in existing CAES power plants. As a result, the pressure variations in the AST during the energy release phase are not taken into account (Chen et al, 2022).…”

Section: System Modelmentioning

confidence: 99%

“…The proposed system has improved RTE and exergy efficiency compared to constant-pressure operation, with maximum efficiencies reaching 57.94% and 58.32%. Chen et al (2022) propose a re-compressed A-CAES system with a compressor in the discharging process to raise the operating pressure of the expansion train, resulting in a higher RTE of 69.89% compared to 65.23% for conventional A-CAES. Zhang et al (2021) introduced an A-CAES system incorporating an inverter-driven compressor, which effectively decreased throttling losses and enhanced the RTE by 1.8%-2.7%.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of compression/expansion stage on compressed air energy storage cogeneration system

An,

Li,

Lin

et al. 2023

Front. Energy Res.

View full text Add to dashboard Cite

Compressed Air Energy Storage (CAES) technology has risen as a promising approach to effectively store renewable energy. Optimizing the efficient cascading utilization of multi-grade heat can greatly improve the efficiency and overall system performance. Particularly, the number of compressor and expander stages is a critical factor in determining the system’s performance. In this study, we focused on the Advanced Adiabatic Compressed Air Energy Storage system with Combined Heat and Power (AA-CAES -CHP). Both economic and thermodynamic models were established for the AA-CAES-CHP system. To systematically study the effects of compression and expansion stages, the influence of 3 different compressor stages and expander stages was comprehensively analyzed under 4 operating conditions. Key findings reveal that the count of compressor and expander stages have a notable impact on the exergy losses of the AA-CAES-CHP system. As for the investment cost, the proportion of investment cost for expanders decreases when the stage numbers of compressors and expanders are the same. Furthermore, both thermodynamic and economic characteristics allow us to optimize the AA-CAES-CHP system’s performance. One of our cases demonstrates that doubling the air mass flow rate results in a doubled total energy output with a relatively modest increase (41.1%–65.1%) in the total investment cost.

show abstract

Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of compression/expansion stage on compressed air energy storage cogeneration system

An,

Li,

Lin

et al. 2023

Front. Energy Res.

View full text Add to dashboard Cite

show abstract

“…Overall, this method could maintain high efficiency and energy storage density. Chen et al [8] established an off-design model, validated the model via experimental data, and adopted the potential induced degradation strategy to control the air temperature.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Performance of Compressors for Small-Scale Compressed Air Energy Storage in Parallel Mode

Yang,

Xu,

Zhang

et al. 2023

Sustainability

View full text Add to dashboard Cite

The Compressed Air Energy Storage (CAES) system is a promising energy storage technology that has the advantages of low investment cost, high safety, long life, and is clean and non-polluting. The compressor/expander is the core equipment of the CAES system, and its performance has a decisive impact on the overall system efficiency and economic performance. Based on the pneumatic motor, this study proposes and designs a test bench of the CAES system that integrates compression and expansion functions. The off-design operation condition represented by the pressure change in the air tank has an important influence on the efficiency and economy of the CAES system. The effect of key parameters such as air tank pressure, torque, and mass flow rate on the output and efficiency of the compressor is investigated. When the CAES system is operating in energy storage mode, the compressor must continuously deliver gas to the gas storage. The working pressure of the compressor increases with the pressure in the air tank, so the compressor used for energy storage must operate continuously over a wide range of working conditions. The parallel operation mode of the compressor is proposed to improve the working condition range of the compressor torque and current, and improve the isotropic efficiency. When the air receiver pressure is 2.6 bar and the rotational speed is 2850 r/min, the power consumption of the compressor reaches the maximum value of approximately 1233.1 W. This new parallel mode could provide a CAES unit a systematic solution.

show abstract

“…[28,29] To eliminate fossil fuel consumption, an advanced adiabatic CAES (AA-CAES) system was developed with many improved system structures. Chen et al [30] proposed a novel recompressed adiabatic CAES system, with an RTE that is 4.66% higher than AA-CAES systems. Ji et al [31] proposed a system that uses solar and wind energy as hybrid power sources.…”

mentioning

confidence: 99%

Design and Thermodynamic Investigation of a Waste Heat‐Assisted Compressed Air Energy Storage System Integrating Thermal Energy Storage and Organic Rankine Cycle

Fu,

Sun,

Huo

2023

Energy Tech

View full text Add to dashboard Cite

Compressed air energy storage (CAES) technology has attracted growing attention because of the demand for load shifting and electricity cost reduction in energy‐intensive industries. To increase the round‐trip efficiency and energy storage density and simplify the structure of advanced adiabatic CAES (AA‐CAES) systems, a waste heat‐assisted CAES (WH‐CAES) design integrating a tube‐in‐tube thermal energy storage unit and an organic Rankine cycle (ORC) is described herein. Thermodynamic models of the proposed WH‐CAES system are established, and the effects of waste heat temperature, ratio of compression ratios, ratio of expansion ratios, and air storage cavern pressure on the performance of different systems, including AA‐CAES and WH‐CAES with and without ORC, are investigated. The results show that when the waste heat temperature is 500 °C, the input work of the compressors reaches its minimum value at a ratio of compression ratios of 1.14, and the optimal ratio of expansion ratios is 0.39. Under these optimal operating conditions, compared with the AA‐CAES system, the round‐trip storage efficiency, energy storage density, and system energy efficiency of the WH‐CAES system can be increased significantly. The findings validate the potential of the proposed WH‐CAES system.

show abstract

Dynamic simulation of a Re-compressed adiabatic compressed air energy storage (RA-CAES) system

Cited by 30 publications

References 34 publications

Analysis of compression/expansion stage on compressed air energy storage cogeneration system

Analysis of compression/expansion stage on compressed air energy storage cogeneration system

Experimental Investigation on the Performance of Compressors for Small-Scale Compressed Air Energy Storage in Parallel Mode

Design and Thermodynamic Investigation of a Waste Heat‐Assisted Compressed Air Energy Storage System Integrating Thermal Energy Storage and Organic Rankine Cycle

Contact Info

Product

Resources

About