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자열증발된 액체연료를 적용한 원통형 예혼합 연소기의 연소특성
이필형(Pil Hyong Lee),송기종(Ki Jong Song),황상순(Sang Soon Hwang) 한국연소학회 2016 한국연소학회지 Vol.21 No.3
The fuel in conventional liquid fuel combustor is atomized by spray method for high efficiency and low emissions. To improve the overall fuel efficiency and lower pollutant emissions in liquid fuel combustion systems, the effective spatial and temporal separation of droplet evaporation from normal spray process is needed. In this paper, the recuperation of high temperature burnt gas for fuel evaporation was proposed to develop a cylindrical premixed combustor. The recuperation process using U shaped tube is effective to evaporate the liquid fuel. The results show that the flame mode is changed into red radiation flame, blue flame and lift off flame with decreasing equivalence ratio as gas fuel combustion mode. In particular, the blue flame is found to be very stable at heating load 9.2 kW and equivalence ratio 0.731. NOx was measured blow 105 ppm (O₂ zero base) from equivalence ratio 0.705 to 0.835. CO which is a very important emission index in liquid fuel combustor was observed below 5 ppm (O₂ zero base) under the same equivalence region.
홍성원(Seong Weon Hong),이필형(Pil Hyong Lee),차천륜(Chun Loon Cha),송기종(Ki Jong Song),임현진(Hyun Jin Im),황상순(Sang Soon Hwang) 한국연소학회 2012 KOSCOSYMPOSIUM논문집 Vol.- No.44
The flameless combustion has been considered as one of the promising combustion technology for high energy efficiency and reducing NOx and CO emissions. To investigate the effects of fluid conditions on the formation of flameless combustion, a numerical approach was performed. The flameless combustion possesses lower temperature region and more uniform temperature distribution than conventional flame. The results show that the flow rate of the system which mainly influence on recirculation ratio is the most important parameter for flameless combustion.
송세권,이기종 全北大學校 科學敎育硏究所 1993 과학과 과학교육 논문지 Vol.18 No.-
The purpose of this study is to improve the criterion of evaluation to check the abilities of research in studying high school physics, and also we can evaluate more scientific research ability and attitude of overflowing number of students in a class. This criterion was classified into seven categories and each category was also classified into some criterion. The evaluation cards were made by means of these categories and criterion. From these evaluation card we can also save time in evaluating. Therefore, the motives of the learner's study have been highly stimulated, forming the confidence of the students. As we have noted from above, it has been proved that this model in evaluating physics experiment is very useful.