K-WATER MODEL TURBINE TEST FACILITY |
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학술지명 ASME Fluids Engineering Division Summer Meeting
저자 김경성,조용,탁세완,오용환
발표일 2014-08-06
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The reduced scale homologous model turbine test is generally used to confirm various performances and hydraulic/mechanical design and to obtain optimized operation conditions for the prototype hydraulic turbine. Therefore it is essential process to minimize prototype risks and to increase unit power output and overall efficiency. The model test facility to reproduce hydraulic conditions in K-water is composed of a variable speed pump to make a pressure head, pressure tanks to reproduce headrace and tailrace of the turbine, a dynamometer to absorb power of the turbine, a compressor and a vacuum pump to control pressure in the tailrace tank, flow conditioner to produce fully developed flow profile and a heat exchanger to keep water temperature. The pipeline and pressure tanks are optimized by numerical simulations for various flow conditions, and the test facility is designed to reproduce the test condition of head of 40 m and flow rate of 1.0m3/s based on the international test standard of IEC 60193. In order to acquire accurate measuring values for the test, measuring instruments such as flow-meter, differential pressure transducer, load cells for torque measurement, temperature transducer, manometer, and tachometer are installed at the approximate position in the test facility, and these should be calibrated again on site before the test. The test facility is configured for open and closed loop hydraulic circuits for various turbines. |