ガスタービンを用いた水力発電のリパワリング

概要

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If the compression and expansion processes of the gas turbine cycle are replaced by isothermal processes, the Ericsson cycle can be realized, and higher thermal efficiency can be expected. An isothermal compression can be achieved using a hydraulic air compressor, and isothermal expansion can be approximated by combining the reheat processes. A hydraulic air compressor can be built by using the water flow from the dam of a conventional hydro-power plant. The ambient-temperature compressed air is supplied to the regenerative and reheat gas turbine system. The performance of this system was analyzed by assuming conventional operating conditions and component characteristics. As a result, the higher thermal efficiency of the cycle was verified. An application of the system to a conventional hydro-power plant was discussed. Finally, it was shown that a 2-3 times greater output could be obtained by this system compared with a conventional hydro-power plant.
公益社団法人日本ガスタービン学会の論文
1994-12-10