Abstract
If the compression process of a regenerative gas turbine cycle is replaced by an isothermal compression process, higher thermal efficiency can be expected. This new cycle is a combination of parts of the Brayton and Ericsson cycles, and it is expected to achieve high efficiency. Isothermal compression in this cycle can be achieved by using a hydraulic air compressor, which converts hydraulic energy to energy of compressed air. The performance of such a system was analyzed by assuming conventional operating conditions and component characteristics. As a result the higher thermal efficiency of the system was proved. The application of this system to a conventional hydraulic power plant was discussed.
