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SnO2 과 Pt 를 첨가한 WO3 후막센서의 제조 및 NOx 감응 특성
이대식,한상도,박기배,심규성,이덕동,손영목 ( D . S . Lee,S . D . Han,K . B . Park,K . S . Sim,D . D . Lee,Y . M . Son ) 한국센서학회 1996 센서학회지 Vol.5 No.5
highly sensitive WO₃ doped with SnO₂ and Pt thick-film sensors for NOx gas were fabricated. The sensors had a maximum sensitivity at operating temperature of 250℃, but the optimum operation temperature, considering recovery desorption time, was at 330℃. These sensors improved sensitivity, response and recovery time, selectivity and stability, as compared to WO₃ sensors. The good linearity of sensitivity as a function of the gas concentration exhibited the possibility to be used for concentration meter.
김종원(J.W.Kim),심규성(K.S.Sim),이상호(S.H.Lee),박기배(K.B.Park),S.B.Lalvani 한국태양에너지학회 1998 한국태양에너지학회 논문집 Vol.18 No.3
석탁액화시 나무, 리그닌, 흑액 등 바이오매스계 첨가제의 효과를 실험식적 규모의 고온, 고압 반응기에서 고찰하였다. 석탄액화시 리그닌계의 첨가는 석탁의 분해를 돕고, 액체생성물의 질을 높여준다. 400℃에서는 마루를 첨가하게 되면, 액체생성물이 8%정도 증가하지만, 그이상의 온도에서는 기체생성물의 증가로 액체생성물 수율이 줄어든다. 흑액은 액화수율을 증대시키기는 하지만, 그 증가율은 NaOH만을 첨가시킨 경우보다 낮았으며, OH의 존재 때문에 흑액중의 리그닌이 주는 효과가 그리 크지 않은 것으로 보인다. The effects of some additives (black liquor, wood and lignin) on the conversion of coal and product were investigated in the lab-scale, high pressure reacting system around 375t. The addition of lignin<br/> to coal during liquefaction significantly increased the depolymerization of coal and enhanced the quality of the liquid products. Coprocessing of wood and coal at 400 t increased yield of liquid product about 8%, but higher temperature above 400 'c reduced liquid product due to increase of gas products. The addition of black liquor resulted in an enhancement in coal conversion yields, however, the observed increase is lower than that obtained in the presence of NaOH because lignin present in black liquor is not very effective due to the OH presence.
박기배,이상호,김종원,진경태,손재익 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1
The objective of the project was the development of an optical approach which would indicate the presence of a flame and detect deviations from a desired set point. In this work, the flame quality indicator consisted of photodiode, optical fiber, interference filter and data acquisition system, and was tested in a lab-scale methane combustion system. It was needed to apply this system to pilot scale combustor in order to confirm whether temporal fluctuations might be correlated with important parameters of combustion process, such as fuel to air ratio and NO_(x) emissions or not.
김동구,박기배,명광식,한상도,한상옥 충남대학교 산업기술연구소 1999 산업기술연구논문집 Vol.14 No.2
DC Arc Plasma was applied in order to convert of hydrocabon fuels (Methane) to hydrogen, which has higher available energy. Plasma can generate very high temperatures with a high degree of control, using electricity. Plasma can be used to produce the pure hydrogen fuel, and has rapid response time. In addition, the use of plasma could provide for a greater variety of operating modes including the posibility of virtual elimination of CO2 production by pyrolytic operation and could obtain byproduct (Carbonblack).
가연성 가스 검출용 Figaro형 Pd/Al₂O₃/SnO₂계 센서 제조와 그 감응특성
명광식,한상도,이상호,박기배,손영목 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1
Figaro type gas sensor was fabricated with sensing materials in which mixed with SnO_(2) , Al_(2)O_(3) binder and palladium catalyst and, developed electronic parts. The SnO_(2) powders obtained by sol-gel method had a mean particle size of 0.93 p m and specific surface area of 32.5 m^(2)/g. And the γ-Al_(2)O_(3)with surface area of 180 m^(2)/g and a solution of 1M. PdCl_(2) were used for the synthesis of the sensing material. Mullite tubes of 0.8mm diamrter, Au pad electrodes of 0.3mm clearance, Au-Pd alloy lead wire of 80μm dia, heating element coiled with Kanthal wire of 60 μm dia were developed to use the gas sensor. The sensitivity of the sensors was excellent for the detection of methane, propane and carbon monoxide at about 490℃, 440℃ and 140℃, respectively.