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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.
Nd:YAG 레이저를 이용한 수중 부식생성물 검출기술에 관한 연구
문전수(J. S. Moon),이상국(S. K. Lee),윤석원(S. W. Yoon) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
A real-time monitoring technology for colloidal iron oxide in boiler water was studied by applying LIBD (Laser Induced Breakdown Detection) and acoustic emission measurement. A Q-switched Nd:YAG laser, which delivers the pulsed laser of wavelength 532 nm, repetition rate 10 Hz and energy 60 mJ. The laser pulse energy for LIBD of corrosion products was maintained to be at approximately 0.6 mJ less than that for LIBD of deionized pure water. The acoustic emission signals resulting from breakdown events were measured by a piezo electric tranducer (PZT) attached to on the side wall of sample flow cell. The quantity analysis of corrosion products in water was achieved based on the breakdown probability of the induced laser pulse events. As accuracy test results of on-line corrosion products monitor, the standard deviation of 8 to 10% could be obtained within the range of 0.25 to 2.0 ppm as Fe.
[학술강연] 전기전도도를 이용한 파울링 진단기술에 관한 연구
정경열(K.Y.Chung),이후락(H.R.Lee),문전수(J.S.Moon),이수태(S.T.Lee),류길수(K.S.Rhyu) 한국마린엔지니어링학회 2002 한국마린엔지니어링학회 학술대회 논문집 Vol.2002 No.-
Fouling causes serious maintenance problems on heat exchanger tubes and process facilities. To avoid such fouling problems, numerous efforts have been tried, e.g., diagnosis of fouling, reducing and eliminating the fouling, etc.. The objective of the present study is to develop an innovative diagnostic system of fouling, which can detect the scaling attached to the wall non-homogeneously. The performance of the diagnostic system has been evaluated with a scaling simulator that generates scaling on tested tube wall. The measured values with the diagnostic system were compared with the amounts of the scaling generated by the simulator.