Research demonstrates high aerodynamic performance of a radial turbine in a compressed air energy system, suggesting potential for efficiency gains.
Compressed Air Energy Storage (CAES) System is a significant technology for renewable energy utilization. In this study, CFD analyses are conducted to realize a high-pressure radial turbine that is compact and can achieve the high aerodynamic performance over the wide operating range in a micro-CAES system. As a result, an adiabatic efficiency of 62.0[%] at the turbine design point and a maximum turbine output of 5.49[kW] were obtained as the initial stage. The loss locations and efficiency reduction factors due to the influence of Mach number were also analyzed to establish a foothold for further performance improvement.
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TSUJI et al. (2025) studied this question.
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