Next Article in Journal
The Entropy of a Discrete Real Variable
Next Article in Special Issue
Optimization of Two-Stage Peltier Modules: Structure and Exergetic Efficiency
Previous Article in Journal
Wavelet q-Fisher Information for Scaling Signal Analysis
Previous Article in Special Issue
Ecological Economic Evaluation Based on Emergy as Embodied Cosmic Exergy: A Historical Study for the Beijing Urban Ecosystem 1978–2004
Entropy 2012, 14(8), 1501-1521; doi:10.3390/e14081501
Article

Potential and Evolution of Compressed Air Energy Storage: Energy and Exergy Analyses

1,* , 1
,
1
 and
2
Received: 25 June 2012 / Revised: 8 August 2012 / Accepted: 8 August 2012 / Published: 10 August 2012
(This article belongs to the Special Issue Exergy: Analysis and Applications)
Download PDF [574 KB, uploaded 24 February 2015]

Abstract

Energy storage systems are increasingly gaining importance with regard to their role in achieving load levelling, especially for matching intermittent sources of renewable energy with customer demand, as well as for storing excess nuclear or thermal power during the daily cycle. Compressed air energy storage (CAES), with its high reliability, economic feasibility, and low environmental impact, is a promising method for large-scale energy storage. Although there are only two large-scale CAES plants in existence, recently, a number of CAES projects have been initiated around the world, and some innovative concepts of CAES have been proposed. Existing CAES plants have some disadvantages such as energy loss due to dissipation of heat of compression, use of fossil fuels, and dependence on geological formations. This paper reviews the main drawbacks of the existing CAES systems and presents some innovative concepts of CAES, such as adiabatic CAES, isothermal CAES, micro-CAES combined with air-cycle heating and cooling, and constant-pressure CAES combined with pumped hydro storage that can address such problems and widen the scope of CAES applications, by energy and exergy analyses. These analyses greatly help us to understand the characteristics of each CAES system and compare different CAES systems.
Keywords: compressed air energy storage (CAES); exergy; adiabatic CAES; isothermal CAES; air cycle heating and cooling compressed air energy storage (CAES); exergy; adiabatic CAES; isothermal CAES; air cycle heating and cooling
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote
MDPI and ACS Style

Kim, Y.-M.; Lee, J.-H.; Kim, S.-J.; Favrat, D. Potential and Evolution of Compressed Air Energy Storage: Energy and Exergy Analyses. Entropy 2012, 14, 1501-1521.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

Cited By

[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert