The Thermodynamics of Compressed Air Exergy Storage

[+] Author and Article Information
J. F. Osterle

Carnegie Mellon University, Pittsburgh, PA 15213

J. Energy Resour. Technol 113(1), 7-11 (Mar 01, 1991) (5 pages) doi:10.1115/1.2905781 History: Received September 18, 1990; Revised November 14, 1990; Online April 16, 2008


The Compressed Air Energy Storage (CAES) concept is analyzed as an exergy storage concept. A thermodynamic analysis involving the application of the first and second laws of thermodynamics to both the charge and discharge processes is made. Works, heats, cavern energy changes, cavern exergy changes, and dissipations are evaluated for two designs—one idealized and the other more practical. An appropriate effectiveness based on the exergy concept is defined and evaluated.

Copyright © 1991 by The American Society of Mechanical Engineers
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