Volume 05: Proceedings of 11th International Conference on Applied Energy, Part 4, Sweden, 2019

Thermodynamic Performance Analysis and Optimization of Liquid Air Energy Storage System by Enumeration Juwon Kim, Daejun Chang


Liquid air energy storage system using Kapitza cycle is thermodynamically optimized with selected critical process variables by partial enumeration. With this method, the contour maps for the independent variables are illustrated, that give intuition to the behavior of the LAES systems. The Interaction between the variables can be found and thermodynamically analyzed. The optimized thermodynamic efficiency 40.0%, 48.8%, and 51.2% when compression pressure is set at 40 bar, 80 bar, and 120 bar, respectively.

Keywords Energy storage systems, Cryogenic energy storage, Efficiency optimization, Thermodynamic analysis, Kapitza liquefaction cycle

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