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발전기 냉각용 On-site 수소 생산 시스템 적용연구
문전수,이재근,박필양,박경일 한국수소및신에너지학회 2009 한국수소 및 신에너지학회논문집 Vol.20 No.5
A hydrogen cooling method is used in a power generator for removing the unnecessary heat due to the windage loss of a rotor and the joule heat of a stator. A MEA (Membrane Electrolyte Assembly) hydrogen generator has been developed and applied as a hydrogen supplying system for the cooling of a 350MW power generator. As a field application result, the average potential of eleven cells and the voltage efficiency were measured 2.26V/cell and 65.4% (Higher Heating Value) respectively at the hydrogen pressure of 6 Bar, the hydrogen flow rate of 9.1L/min, and the current of 150A.
분극저항에 의한 온라인 부식속도 측정 시스템에 관한 연구
문전수 ( Jeon Soo Moon ),이재근 ( Jae Kun Lee ),이재봉 ( Jae Bong Lee ),박필양 ( Pyl Yang Park ) 한국부식방식학회 2012 Corrosion Science and Technology Vol.11 No.4
The linear polarization resistance method is one of the widely used techniques for the corrosion rate monitoring in the water circulating systems of plants. The measurement is simple and rapid, so that a continuous on-line monitoring is possible without any shutdown of plants. A 2-electrode Polarization corrosion rate measurement system was installed in a laboratory using a data acquisition board and PC. The signal processing parameters were optimized for the accurate corrosion rate measurement, and the polarization resistance was compensated with the solution resistance measured by the high frequency sine wave signal of an output channel. The precision of corrosion rate data was greatly improved by removing the initial noisesignals on measuring the polarization resistance.