Efficiency of Compressed Air Energy Storage

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2011

Standard

Efficiency of Compressed Air Energy Storage. / Elmegaard, Brian; Brix, Wiebke.

The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems: The 2011 conference motto: International Smart Energy Networks of Cooperation for Sustainable Development. 2011.

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2011

Harvard

Elmegaard, B & Brix, W 2011, 'Efficiency of Compressed Air Energy Storage'. in The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems: The 2011 conference motto: International Smart Energy Networks of Cooperation for Sustainable Development.

APA

Elmegaard, B., & Brix, W. (2011). Efficiency of Compressed Air Energy Storage. In The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems: The 2011 conference motto: International Smart Energy Networks of Cooperation for Sustainable Development.

CBE

Elmegaard B, Brix W. 2011. Efficiency of Compressed Air Energy Storage. In The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems: The 2011 conference motto: International Smart Energy Networks of Cooperation for Sustainable Development.

MLA

Elmegaard, Brian and Wiebke Brix "Efficiency of Compressed Air Energy Storage". The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems: The 2011 conference motto: International Smart Energy Networks of Cooperation for Sustainable Development. 2011.

Vancouver

Elmegaard B, Brix W. Efficiency of Compressed Air Energy Storage. In The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems: The 2011 conference motto: International Smart Energy Networks of Cooperation for Sustainable Development. 2011.

Author

Elmegaard, Brian; Brix, Wiebke / Efficiency of Compressed Air Energy Storage.

The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems: The 2011 conference motto: International Smart Energy Networks of Cooperation for Sustainable Development. 2011.

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2011

Bibtex

@inbook{9ce24503affd42c19ac5879f73019c1a,
title = "Efficiency of Compressed Air Energy Storage",
keywords = "Exergy analysis, Electricity storage, Compressed Air Energy Storage",
author = "Brian Elmegaard and Wiebke Brix",
year = "2011",
booktitle = "The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems",

}

RIS

TY - GEN

T1 - Efficiency of Compressed Air Energy Storage

A1 - Elmegaard,Brian

A1 - Brix,Wiebke

AU - Elmegaard,Brian

AU - Brix,Wiebke

PY - 2011

Y1 - 2011

N2 - The simplest type of a Compressed Air Energy Storage (CAES) facility would be an adiabatic process consisting only of a compressor, a storage and a turbine, compressing air into a container when storing and expanding when producing. This type of CAES would be adiabatic and would if the machines were reversible have a storage efficiency of 100%. However, due to the specific capacity of the storage and the construction materials the air is cooled during and after compression in practice, making the CAES process diabatic. The cooling involves exergy losses and thus lowers the efficiency of the storage significantly. The efficiency of CAES as an electricity storage may be defined in several ways, we discuss these and find that the exergetic efficiency of compression, storage and production together determine the efficiency of CAES. In the paper we find that the efficiency of the practical CAES electricity storage is 25-45% and thus has a quite low efficiency, which is close to the efficiency of the simple diabatic CAES-process. Adiabatic CAES would reach significantly higher storage efficiency about 70-80%.

AB - The simplest type of a Compressed Air Energy Storage (CAES) facility would be an adiabatic process consisting only of a compressor, a storage and a turbine, compressing air into a container when storing and expanding when producing. This type of CAES would be adiabatic and would if the machines were reversible have a storage efficiency of 100%. However, due to the specific capacity of the storage and the construction materials the air is cooled during and after compression in practice, making the CAES process diabatic. The cooling involves exergy losses and thus lowers the efficiency of the storage significantly. The efficiency of CAES as an electricity storage may be defined in several ways, we discuss these and find that the exergetic efficiency of compression, storage and production together determine the efficiency of CAES. In the paper we find that the efficiency of the practical CAES electricity storage is 25-45% and thus has a quite low efficiency, which is close to the efficiency of the simple diabatic CAES-process. Adiabatic CAES would reach significantly higher storage efficiency about 70-80%.

KW - Exergy analysis

KW - Electricity storage

KW - Compressed Air Energy Storage

BT - The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

T2 - The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

ER -