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공업로 부분 저열량 천연가스에 대한 산업용 가스기기 대응 기술
동상근(Sangkeun Dong),양제복(Jebok Yang) 한국연소학회 2014 KOSCOSYMPOSIUM논문집 Vol.2014 No.5
The analysis and technology about industrial sensitive facility of low calory natural gases is conducted. In this study, temperature control, atmosphere control are analyzed. The effect of the interchangeability about 20 kinds of furnace researched and the corresponding technology are summarized. The adjustment method of combustion device and modification of control program are proposed.
동상근(Sang Keun Dong),양제복(Jae Bok Yang),정우남(Woo Nam Jung) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
In the present study, compact Non O2 Anealing Furnace is proposed and Rx generator Which is used for non oxygen condition, is embedded inside furnace. Also Re-generative Single Radiant Tube Type Burner id developed for efficient heating burner. Experimental as well as numerical simulations are performed on a real scale model of Compact Full Time Re-generative Single Radiant Tube Type Burner. A comprehensive CFD model validated with experimental results is used to perform detailed numerical thermal analysis of the combustion process and complex heat transfer mechanism in heat exchangers built within the RT burner. Simulations are performed to investigate the effect of different input conditions on the performance of RT burner.
동상근(Sangkeun Dong),양제복(Jebok Yang),정우남(Woonam Jeong) 한국연소학회 2015 KOSCOSYMPOSIUM논문집 Vol.2015 No.5
The practical technology about industrial sensitive facility of various calory and wobbe index ? natural gases is conducted. The adjustment methods of combustion device for changing air fuel ratio and atmosphere in the furnace are investigated. About 20 kinds of furnace are researched and the corresponding technology are summarized.
A study of Water flooding modeling for DMFC at cathode channel
동상근(Sang-Keun Dong),유기수(Kisoo Yoo),이대근(Dae-Keun Lee),정명균(Myung-Kyoon Chung) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
The present paper addresses the water flooding model validation in cathode channel for DMFC. Water flooding not only reduces DMFC stack performance but also causes O₂ starve that damages membrane at cathode channel. Although the water flooding problem is critical in operating DMFC, it has not been resolved yet since the effect of temperature, H₂O vapor and liquid partial pressure effects on the H₂O vapor saturation is very complex. Therefore, the operating feasible range in the dynamic control of DMFC is inevitably narrow. In order to be able to dynamically control the DMFC to prevent water flooding problem at cathode channel, 3D numerical model was validated by comparison with experimental result. We performed numerical simulation for a wide range of V<SUB>cell</SUB> - current density for 1 layer-1 cell DMFC and the results were compared with experimental data. It was found that the 3D simulation model for the DMFC can be used to accurately predict the water flooding at cathode channel.