Theoretical Analysis of a Novel Compressed Air Energy Storage System
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Abstract
According to the natural environment drought, water shortage, high sand and the restrict use of natural gas in Western China, this paper proposes a technical scheme of the compressed air energy storage. The thermodynamics process of energy storage and power generation have also been analyzed, while the compression process index, maximum gas pressure and turbine inlet temperature on the influence of system energy conversion efficiency have been paid much more attention. The research result shows that: 1, with the increasing of the polytropic index, the system electricity ratio nearly keeps constant, while the energy efficiency increases and the heat ratio greatly decreased. 2, the system electricity ratio and the heat ratio increase with the increasing of the pressure in high pressure vessel, the energy efficiency decreases with the increasing of the pressure in high pressure vessel. 3, the system electricity and the heat ratio decrease along with the rise of inlet temperature in high pressure gas turbine, and the energy efficiency increases with the increasing of inlet temperature in high pressure gas turbine. The study of this paper has a certain reference value in the large-scale promotion application in China.
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