University Of Tasmania
Energy procedia 160 (2019) 260-267.pdf (649.32 kB)

Exergy analysis of a one-stage adiabatic compressed air energy storage system

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conference contribution
posted on 2023-05-23, 13:59 authored by Hamidreza Mozayeni, Xiaolin WangXiaolin Wang, Michael NegnevitskyMichael Negnevitsky
To improve the use of renewable energy sources and increase their penetration in the renewable energy market, different types of energy storage technologies have been introduced among which compressed air energy storage (CAES) systems offer more competitive feature. In this paper, a comprehensive exergy analysis of a one-stage, adiabatic compressed air energy storage (A-CAES) system is carried out for a wide range of parameters. The governing parameters on the system performance include, but not limited to, storage pressure, pre-set vessel pressure as well as isentropic efficiencies of the major components involved in the A-CAES systems most specifically compressor and expander. By performing the exergy analysis and using the concept of exergy destruction, which is a criterion for power loss due to the irreversibility, the magnitude and source of thermodynamic inefficiencies at each part of the system is identified. The obtained results reveal that the isentropic efficiency of the machine has a significant effect on the amount of exergy destructed by the machine. In addition, the results show that generally more exergy is lost in the expander than other components of the A-CAES system during the system operation. Consequently, to improve the system performance, utilising a high-efficient expander should be a priority. It is also shown that increase in the storage pressure improves the exergy efficiency of the compressor and expander. Using the obtained results, it would be possible to find the optimum working condition for the system leading to improvement of the system performance.


Publication title

Energy Procedia




H Chowdhury et al






School of Engineering



Place of publication

The Netherlands

Event title

2nd International Conference on Energy and Power, ICEP2018

Event Venue

Sydney, Australia

Date of Event (Start Date)


Date of Event (End Date)


Rights statement

Copyright 2019 the Authors CC BY-NC-ND license

Repository Status

  • Open

Socio-economic Objectives

Energy systems and analysis