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1 2016

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Impact of selected parameters on performance of the Adiabatic Liquid Air Energy Storage system

Krawczyk P., Szabłowski Ł., Badyda K., Karellas S., Kakaras E.

Journal of Power Technologies

2016

Vol. 96, nr 4

238--244

The paper presents a thermodynamic analysis of a selected hypothetical liquid air energy storage (LAES) system. The adiabatic LAES cycle is a combination of an air liquefaction cycle and a gas turbine power generation cycle without fuel combustion. In such a system, heat of compression is stored and subsequently used during the expansion process in the turbine. A mathematical model of the adiabatic LAES system was constructed. Balance calculation for a selected configuration of the energy storage system was performed. The influence of pressure in the air liquefaction cycle and the gas turbine power generation cycle on storage energy efficiency was analyzed. The results show that adiabatic liquid air energy storage systems could be very effective systems for storing electrical power, with efficiency levels reaching as high as 57%.