Chapter 7

Underwater Compressed Air Energy Storage

Andrew Pimm
Seamus D. Garvey    Faculty of Engineering, University of Nottingham, Nottingham, United Kingdom

Abstract

At the center of every compressed air energy storage installation is the vessel, or set of vessels, that retains the high-pressure air. Normally, high-pressure air storage also dominates the cost of the installation, and its characteristics play a key role in determining performance. Underwater storage of pressurized air is characterized by three important attributes: (1) it has the potential to achieve very low cost per unit of energy stored, (2) it naturally tends to exhibit an isobaric (constant pressure) characteristic of pressure versus fill-level, and (3) in stark contrast ...

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