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프로축구 관중의 경기관람요인과 지각된가치, 관람만족, 관람몰입, 재관람의도 및 구전의도의 관계
이화웅,김용만 한국사회체육학회 2019 한국사회체육학회지 Vol.0 No.77
Purpose: The purpose of this study is to investigate relationship amogn factors affecting game attendance , perceived value, spectating satisfaction, spectating commitment, revisit intention and word of mouth intention of professional soccer spectators. Method: The subjects of this study were the spectator who watched soccer game of 2018 KEB Hana Bank K League. The survey was conducted for 300 spectators who watched soccer games in soccer stadiums located in Seoul, Suwon and Jeonju including the weekend’s games. The convenience sampling method was used for the sampling and also, self-administration method was utilized. This study used 296 copies for the research among the collected questionnaires except for 4 copies, which were considered as non-valid samples. For data analysis, SPSS 23.0 and AMOS 22.0 statistical software were used. Results: First, the factors affecting game attendance of professionasl occer spectators had a positive influence on perceived value, spectating satisfaction and spectating commitment. Second, the perceived value had a positive effect on spectating satisfaction, revisit intention, and word of mouth intention. Third, the spectating satisfaction had a positive effect on spectating commitment and revisit intention. Fourth, the spectating commitment had a positive effect on revisit intention, and word of mouth intention. Conclusion: In conclusion, the performance and fan service which are sub-factors of the factors affecting game attendance had a positive influence on the perceived value, spectating satisfaction and spectating commitment but the spectating satisfaction did not affect word of mouth intention. Therefore, the club needs to provide fan service which can differentiate from other clubs and make an investment in their players and the club to enhance performance in order to increase value, satisfactio nand immersion of audience so that the value , satisfaction and immersion of audience can be increased and the spectators will watch the games continuously.
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이단 적층 흡착탑을 이용한 CO<sub>2</sub> PSA 공정
이화웅,최재욱,송형근,나병기,Lee, Hwaung,Choi, Jae-Wook,Song, Hyung Keun,Na, Byung-Ki 한국청정기술학회 2001 청정기술 Vol.7 No.1
화력발전소의 연소가스에서 고순도의 $CO_2$를 분리, 회수하는 것을 목적으로, 에너지 비용이 적게 드는 것으로 알려진 PSA(Pressure Swing Adsorption)공정을 이용하였다. 흡착제로서 활성탄 및 제올라이트를 사용하여 연소가스에서 $CO_2$를 회수할 수 있는 장치를 제작하고 이를 조업하는 조건을 확립하고자 하였다. $CO_2$ 회수용으로 적합하지 않다고 알려져 있는 활성탄을 이용하여도 세정단계의 변형을 통한 새로운 사이클을 이용하여 고순도의 $CO_2$를 생성물로 얻을 수 있었다. 또한 활성탄과 제올라이트 각 흡착제의 흡착특성을 이용하여 이들 두 흡착제의 장점을 최대로 이용할 수 있도록 흡착탑의 일부만을 제올라이트 13X를 채워 조업하는 2단 적층 흡착탑을 이용하여 회수율의 향상을 얻을 수 있었다. 흡착탑의 도입부 쪽에 활성탄을, 배출부 쪽에 제올라이트를 채움으로써 최대의 효과를 얻을 수 있었는데, $CO_2$ 농도 13%, 유량 10 SLPM, 흡착압력 2.2기압에서 제올라이트를 부피비로 25%만 사용하여도 40%의 회수율 향상을 얻을 수 있었으며 50%를 이용한 경우에는 회수율이 67%까지 증가하였는데 이는 제올라이트만을 이용한 경우의 회수율과 비슷한 결과였다. In this study, PSA, known as the most economic process, was used to recover $CO_2$ from the power-plant flue gas. Activated carbon and zeolite molecular sieve 13X were used as adsorbent. Activated carbon has been deemed inadequated adsorbent for separating $CO_2$ from the flue gas. However, highly concentrated $CO_2$ could be obtained as a product on the activated carbon adsorbent using the new operating cycle modifying the rinse step. Also, the recovery of $CO_2$ was improved using double-layered adsorption column packed with the activated carbon and the zeolite 13X simultaneously. Adsorption column was filled with the activated carbon in the feed-end side, and the zeolite 13X in the product-end side. The recovery of $CO_2$ increased about 40% with only 25% zeolite, and increased 67% with 50% zeolite at the experimental conditions of 13% $CO_2$ concentration, 10 SLPM flow rate and 2.2 atm adsorption pressure.
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김진수,나병기,송형근,한춘,이화웅 한국화학공학회 1999 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.37 No.1
공장에서 대기 중으로 방출되고 있는 폐유기용매 중의 하나인 MEK(Methyl Ethyl Ketone)를 흡착법으로 회수하기 위하여 가장 적합한 흡착제를 선정하였다. 입상활성탄, 섬유상활성탄 및 고분자 흡착제를 사용하여 흡착량과 탈착량을 비교 검토하였다. 흡착제를 흡착탑에 충진하고 시료가스를 흘리면서 출구에서의 MEK 농도를 분석한 파과실험을 통하여 흡착량을 측정하였다. 입상활성탄 및 섬유상활성탄은 초기의 MEK 흡착량이 많은 반면에 상온에서 재생 후에는 흡착량이 감소하였다. 반면에 고분자 흡착제는 초기의 흡착량도 매우 높았으며 상온에서 재생 후의 흡착량도 초기흡착량과 비슷하였다. 진공 탈착을 하면서 MEK의 회수율을 측정한 결과를 살펴보면, 활성탄에 비해서 고분자 흡착제가 높은 회수율을 나타내었다. A reliable adsorbent for MEK (Methyl Ethyl Ketone) was selected to recover it from the ducts of plant, which can solve related environmental problems. Granular activated carbon, activated carbon fiber, and polymer adsorbents were tested with the adsorption and desorption amounts of MEK. The adsorbents were loaded into the column and breakthrough experiments were performed by analyzing the outlet gas from the column by a gas chromatography. Granular activated carbon and activated carbon fiber had high adsorption amounts at first adsorption. After regeneration of the adsorbents at room temperature under vacuum the adsorption amounts decreased. Polymer adsorbents had high adsorption amount at first adsorption and the second adsorption amount was almost equal to the first one after regeneration. During the regeneration MEK was collected with a liquid nitrogen trap. Polymer adsorbents had higher recovery than the activated carbons.
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P-607 : Methane conversion using gliding arc discharge
( Antonius Indarto ),송형근,최재욱,이화웅 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.2
A study of methane conversion using gliding arc discharge was performed. The main products of reaction were Carbon (C-solid), H2, and, C2H2. The effects of input frequency, power, total flow rate, and CH4/additive gas ratio on conversion and product selectivity were investigated. Methane conversion was enhanced with increasing input power, frequency and decreasing the total gas flow rate. Addictive gas, such as argon and helium, has a great effect on methane conversion and product selectivity. Decreasing ratio of methane gas has increased the methane conversion 47.83% to 61.2% and H2 selectivity 43.67% to 67.5% but decreasing the acetylene (C2H2) selectivity from 27.32% to 11.44%.
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CO2 회수를 위한 PSA 공정에서 탈착 및 세정조건이 공정 성능에 미치는 영향
최재호,여영구,나병기,송형근,이화웅 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.6
강흡착질이 생성물인 PSA 공정에서, 탈착 및 세정단계가 공정의 성능에 미치는 영향을 모사를 통하여 고찰하였다. 세정과 탈착단계는 강흡착질을 고순도의 생성물로 얻기 위한 중요한 단계이다. 따라서 세정단계의 조건을 변화시켜 공정의 효율을 높이는 방향으로서 세정압력, 세정환류비 그리고 세정방향을 변수로 선정하여 이들 변수에 따른 성능의 변화를 분석하였다. 또한 탈착압력의 변화를 세정의 조건변화와 결부시켜 고찰하는 과정을 통하여 최적의 성능을 얻는 조업조건을 찾을 수 있었다. 세정압력의 증가는 세정시의 흡착되는 CO₂의 양을 증가시켜 순도보다 회수율의 증가에 큰 효과를 보였으며, 탈착압력의 감소는 탈착량을 증가시켜 높은 순도의 증가효과를 가져오는 것으로 나타났다. 이 과정에서 압력조건에 따른 최적의 세정환류비가 존재함을 확인할 수 있었다. The effect of evacuation and rinse step on the process performance was studied using numerical simulation to recover heavy component in a PSA process. Rinse and evacuation steps are very important to obtain heavy component as a product. Therefore, to improve the process performance, the rinse pressure, reflux ratio and flow direction of rinse step were selected as variables, and the performance change of process according to changing variables was investigated. The effect of evacuation condition combined with the rinse condition was studied also. As a result, the optimum operating condition was obtained to have maximum process performance. Increasing rinse pressure conduced to increase the recovery by increasing adsorbed amount of CO₂ during the rinse step. Decreasing evacuation pressure contributed to increase the purity by increasing desorbed amount of CO₂ during the evacuation step. At this point, the optimum reflux ratio was existed at certain pressure conditions.
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