Parametric study of turbine systems for compressed air energy storage plants
A parametric study of possible turbine systems for compressed air energy storage (CAES) plants is made. The plant considered is divided into four subsystems: a turbine system, compressor system, reversible motor/generator, and an underground air storage reservoir. The turbine system comprises a high-pressure gas turbine, a low-pressure gas turbine, two combustors, and a recuperator. The compressor system consists of a low-pressure compressor, a booster compressor, an intercooler, and an aftercooler. A water-compensated mined cavern is the underground reservoir. Thermodynamic analyses of subsystem components are made, and plant performance is evaluated. The results are given in terms of the five parameters: specific air flow rate, specific storage volume, specific heat rate, specific compression rate, and overall plant efficiency. The effects on plant performance of design parameters such as inlet gas temperature and pressure to each turbine were analyzed. Also considered is the effect of using cooling air for turbine blades and vanes.
- Research Organization:
- Argonne National Lab., Ill. (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6801581
- Report Number(s):
- ANL/ES-64
- Country of Publication:
- United States
- Language:
- English
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