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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.
유체해석 모델링을 통한 스케일 제거 반응기 최적설계 연구
문전수 (J. S. Moon ),박필양 (P. Y. Park ),이재근 (J. K. Lee ) 한국동력기계공학회 2009 한국동력기계공학회 학술대회 논문집 Vol.2009 No.6
The optimized scale removal reactor was developed through FLUENT fluid dynamic modeling in order to protect the deposition of calcium hardness from high cycled cooling tower water on the heat transfer surface of industrial heat exchangers. Electrolytic scale removal is based on the generation of a high pH environment around the cathode inside a scale removal reactor. The calcium hardness in the cooling water is removed in the form of calcium carbonate. The application of the developed scale removal reactor could substitute the injection method of scale inhibitors into cooling water system. The results of fluid dynamic modeling are discussed, and the optimization design conditions are proposed in this paper.