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상부온도(上部溫度)와 공기비(空氣比) 변화(變化)에 따른 폐목재(廢木材)의 이단(二段) 유동층(流動層)가스화(化)
문태영,김진오,김진원,김주식,Mun, Tae-Young,Kim, Jin-O,Kim, Jin-Won,Kim, Joo-Sik 한국자원리싸이클링학회 2010 資源 리싸이클링 Vol.19 No.2
폐목재의 가스화에서는 타르의 생성을 동반하는 데, 이 때 발생하는 타르는 관막힘, 장치의 fouling 등의 많은 문제를 일으킨다. 본 실험에서는 타르의 저감을 위해 이중 가스화기의 상부반응기에 활성탄을 첨가하였고 상부반응기 온도와 equivalence ratio 변화에 따른 producer gas의 특성(조성, 타르 함량, 저위발열량)을 고찰하였다. 상부반응기의 온도변화에 따른 영향을 고찰하기 위해서 743, 793, $838^{\circ}C$에서 실험을 수행하였으며, equivalence ratio의 영향을 알아보고자 추가적으로 equivalence ratio를 0.17로 변화시켜 비교실험을 하였다. 모든 실험에서 생성된 producer gas 내의 타르함량은 $2mg/Nm^3$ 이하로 매우 적었고, producer gas 의 최대 저위발열량(LHV)은 약 $10MJ/Nm^3$ 이상으로 전형적인 air가스화의 저위발열량($3\sim6MJ/Nm^3$)보다 높은 값을 나타내었다. During the biomass gasification, tar generation is typically accompanied, which causes many problems, such as pipe plugging and equipment fouling. In the experiments, activated carbon was applied to the upper reactor of the two-stage gasifier in order to remove the tar generated during gasification. In addition, the effects of the upper-reactor temperature and equivalence ratio on the producer gas characteristics (composition, tar content and lower heating value) were investigated. To investigate the effect of the upper reactor-temperature, experiments were performed at 743, 793, $838^{\circ}C$, respectively. To examine the influence of the equivalence ratio, a comparison experiment was carried out at a equivalence ratio of 0.17. In all experiments, tar contents in the producer gases were below $2mg/Nm^3$. The maximum LHV of the producer gas was above $10MJ/Nm^3$, which is much higher than the typical LHV($3\sim6MJ/Nm^3$) in the air gasification of biomass.
미분탄화력발전에서의 바이오매스 혼소 시 플랜트 성능특성 평가
문태영(Tae-Young Mun),Zelalem Tumsa Tefera,이은도(Uendo Lee),이정우(Jeung Woo Lee),양원(Won Yang) 한국연소학회 2014 한국연소학회지 Vol.19 No.3
The aims of this research were to evaluate effects of biomass co-firing to pulverized coal power plants and the variation of co-firing ratios on the plant efficiency related to power consumption of auxiliary system and flue gas characteristics such as production and component by process simulation based on the existing pulverized coal power plant. In this study, four kinds of biomass are selected as renewable fuel candidates for co-firing: wood pellet(WP), palm kernel shell(PKS), empty fruit bunch(EFB) and walnut shell(WS). Process simulation for various biomass fuels and co-firing ratios was performed using a commercial software. Gas side including combustion system and flue gas treatment system was considering with combination of water and steam side which contains turbines, condenser, feed water heaters and pumps. As a result, walnut shell might be the most suitable as co-firing fuel among four biomass since when 10% of walnut shell was co-fired with 90% of coal on thermal basis, flue gas production and power consumption of auxiliary systems were the smallest than those of other biomass co-firing while net plant efficiency was relatively higher than those of other biomass co-firing. However, with increasing walnut shell co-firing ratios, boiler efficiency and net plant efficiency were expected to decrease rather than coal combustion without biomass co-firing.
축구선수의 기본심폐소생술에 대한 지식, 태도 및 수행능력
문태영(Moon, Tae-Young),박순문(Park, Sun-Mun) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.7
본 연구는 축구선수들의 심폐소생술에 대한 지식수준, 태도 및 수행능력에 관한 차이를 살펴보고자 함이다. 이를 위해 서울, 경기, 강원도에 소재하고 있는 고등학교 및 대학생 축구선수 234명을 대상으로 2011년 10월 5일부터 10월 19일까지의 설문조사 하였다. 수집된 자료는 Windows용 SPSS/PC 19.0을 사용하여 빈도분석, t-test ANOVA, 상 관관계 분석을 실시하였다. 모든 통계 분석은 유의수준은 p<.05로 설정하였다. 결과는 다음과 같다. 축구선수들의 일반적 특성에 따른 기본심폐소생술에 대한 지식수준, 태도 및 수행능력은 성별, 학력, 기본심폐소생 술 교육경험유무에 영향을 미치는 것으로 나타났으며, 심폐소생술 관련 특성과 지식수준, 태도 및 수행능력에 차이가 있는 것으로 나타났다. 또한, 축구선수들의 기본심폐소생술에 대한 지식수준, 태도 및 수행능력 간의 상관관계가 있는 것으로 나타났다. 이러한 결과들을 바탕으로 축구선수들의 기본심폐소생술에 대한 경험 및 지식수준을 정확히 파악함 으로써 마음 놓고 경기할 수 있는 장을 만들어 보다 더 나은 운동경기를 할 수 있을 것으로 사료된다. The purpose of this study is to examine difference in knowledge level, attitude and performance competence on CPR (Cardiopulmonary Resuscitation) in football players. For this, questionnaire survey was carried out from October 5, 2011 to October 19 targeting 234 football players of high schools and universities where are located in Seoul, Gyeonggi, and Gangwon-do Province. The collected data was carried out frequency, t-test ANOVA, and correlation analysis by using SPSS/PC 19.0 for Windows. All the statistical analyses were set for significance level in p<.05. The results are as follows. Knowledge level, attitude and performance competence on CPR according to football players' general characteristics were indicated to have influence upon gender, academic background, and the appearance of educational experience in CPR. It was indicated that there is difference between CPR-related characteristics, and knowledge level, attitude & performance competence. Also, it was indicated that there is correlation among knowledge level, attitude and performance competence on CPR in football players. Based on these results, it accurately grasps experience and knowledge level on CPR in football players, thereby making a place available for having a game with security, resulting in being considered to possibly make the better sports.