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문제옥 ( Mun Jeok ),윤성필 ( Yoon Sungpil ) 한국품질경영학회 2016 품질경영학회지 Vol.44 No.3
Purpose: Existing precedent studies include success factors of individual management innovation activities constantly. However, those studies have limitations about the common key success factors of individual management innovation activities. Methods: For this study, we investigate the key success factors using literature research of the most typical management innovation activities adopted and implemented by many companies in Korea, such as 6sigma, TQM, Lean 6sigma, ERP, TPM, BPR, Project Management, System Engineering. Factors emerging repeatedly was combined into common factors and inherent factors that are necessary for the success of individual management innovation activities are designated to essential factors. Results: ‘Essential factors for Six Sigma’consist of 5 items. Black belt operating system, personnel management system linkage, the correct management of the data, perform improvement projects associated with financial performance financial result, linked to financial performance improvement project, project progress management. ‘Essential factors of TQM’ are arranged 4 items. Quality team’s independence and role, goal-setting, Quality Information System, corporate’s philosophy of quality first. ‘Essential factors of Lean Six Sigma’are the selection of value stream which is based on the customer needs and the value creation and identify the project based on the selected value in the company. ‘Essential factors of ERP’are investigated 6 items. Ongoing system maintenance and upgrades, the measurement and support of user satisfaction, the operating systems and the policies for the maintenance, IT infrastructure, change adaption condition monitoring, focusing on improving business performance. ‘Essential factors for TPM’are arranged 4 items. Motivated and energetic Bottom-Up, CEO’s recognition of the importance facility management, long term perspective of necessity and ongoing patience. ‘Essential factors for BPR’are the pursuit of change process and the staff’s sense of crisis management. ‘Essential factors for Project Management’are the strategy that reduce the risk management skills through risk management and the understanding and organized management for the project participant’s needs. ‘Essential factors for System Engineering’consist of 2 items. The first is the design for the best balanced system with pre-analysis about the compromise the cost, schedule and the performance. The second is the analysis of large problem into small problems which can solved. We have found the solution considering components of the interface through the systematic perspective. Conclusion: Common factors and essential factors presented in this study will properly help to introduce the individual management innovation activities for the each business sector and implement management innovation. After this study, new literature research that reflect new studies should accomplish steadily.
폐냉장고 진공단열재 순환이용성 확보를 위한 통합 재활용 시스템개발 연구현황
박지환 ( Jihwan Park ),윤성필 ( Sungpil Yoon ),장충효 ( Choonghyo Jang ),최종현 ( Jonghyun Choi ),유준수 ( Junsoo Yoo ),이충우 ( Choongwoo Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2020 한국폐기물자원순환학회 추계학술발표논문집 Vol.2020 No.-
진공단열재(VIPs, Vacuum Insulation Panels)는 다공성의 심재를 투습 및 투기성이 낮은 고기밀성 외피재를 이용하여 밀봉한 후 패널의 내부를 10~100 mbar 수준의 진공상태로 유지시켜 일반단열재 대비 10배 이상 낮은 열전도율을 유지할 수 있는 복합 단열재이다. 2010년초부터 대용량 냉장고 생산에 진공단열재가 사용되었으며, 최근 재활용단계에서도 진공단열재가 내장된 제품들이 발생하여 이에 대한 순환이용성 확보가 시급하다. 냉장고용 진공단열재는 주로 글라스울 심재가 사용되며, 습식심재는 섬유경이 3~5μm 수준으로 인체 유해성 이슈로 인해 건식 심재로 전환되는 추세이다. 흡착제 및 게터(Getter)는 냉장고 제조사 별로 차이가 있으나 주로 수분만 흡착하는 CaO와 수분 외 기체 분자를 흡착하는 게터 (getter)가 사용된다. 일부 제조사에서 진공단열재 적용 초기 사용했던 metal getter가 냉장고 재활용과정에서 물과 접촉하거나 충격 때문에 화재를 일으킨 사례도 존재했다. 또한, 유리섬유가 공장 내 분진으로 부유할 경우 호흡기 및 폐 질환 유발 우려가 존재하는 것도 사실이다. 결과적으로, 진공단열재가 내장된 냉장고는 최종 재활용단계에서도 난제에 봉착해있다. 본 연구는 진공단열재가 내장된 냉장고를 친환경적이면서 안전하게 처리할 수 있는 재활용 시스템을 실증적으로 개발·운영함을 목표로 한다. 진공단열재를 원형 유지 후 회수하여 건축용 단열재로의 재사용을 목적으로 하며, 이를 위해 냉장고 외판 절단, 외판 해체, 외판으로부터의 진공단열재 분리공정을 재활용 플랜트에 설치·운영하여 진공단열재 순환이용성을 확보하고자 한다.
문제옥 ( Mun Jeok ),윤성필 ( Yoon Sungpil ) 한국품질경영학회 2017 품질경영학회지 Vol.45 No.1
Purpose: Most enterprises adopt six sigma acts to maximize the business performance with raising the executiveness for the project improvements in each parts. But there are little studies about six sigma actual operations in manufacturing whether the six sigma improvements that have injected a lot of budget, efforts, labours and time are run properly. Methods: This study select 31 interviewees who have MBB or BB from 5 large enterprises running six sigma over 10 years and 5 SMEs running six sigma over 5 years to understand and review the operational status of six sigma actions in manufacturing industry and to secure representativeness. This study identify the operational status of six sigma actions and key factors enhancing or impeding execution of six sigma projects through face-to-face interviews and online surveys by e-mail. Results: This study figured out the operational status of six sigma actions and key factors enhancing or impeding execution of six sigma projects. We used SPSS 16.0 for the reliability and the validity of survey data. Conclusion: There can be a lot of different factors that affect six sigma project improvements besides the key factors from this study. More study need to think of the organization characteristics and the basic conditions and to remedy the unreasonable points and defects rather than following foreign companies and enterprises.
Effect of operating temperature using Ni-Al-ZrH<sub>2</sub> anode in molten carbonate fuel cell
서동호(Seo, Dongho),장성철(Jang, Seongcheol),윤성필(Yoon, Sungpil),남석우(Nam, Suk Woo),오인환(Oh, In-Hwan),임태훈(Lim, Tae-Hoon),홍성안(Hong, Seong-Ahn),한종희(Han, Jonghee) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
Fuel cell is a device that directly converts chemical energy in the form of a fuel into electrical energy by way of an electrochemical reaction. In the anode for a high temperature fuel cell, nickel or nickel alloy has been used in consideration of the cost, oxidation catalystic ability of hydrogen which is used as fuel, electron conductivity, and high temperature stability in reducing atmosphere. Most MCFC stacks currently operate at an average temperature of 650?C. There is some gains with decreased temperature in MCFC to diminish the electrolyte loss from evaporation and the material corrosion, which could improve the MCFC life. However, operating temperature has a strong related on a number of electrode reaction rates and ohmic losses. Baker et al. reported the effect of temperature (575 to 650?C). The rates of cell voltage loss were 1.4mV/?C for a reduction in temperature from 650 to 600?C, and 2.16mV/?C for a decrease from 600 to 575?C. The two major contributors responsible for the change in cell voltage with reducing operation temperature are the ohmic polarization and electrode polarization. It appears that in the temperature range of 550 to 650?C, about 1/3 of the total change in cell voltage with decreasing temperature is due to an increase in ohmic polarization, and the electrode polarization at the anode and cathode. In addition, the oxidation reaction of hydrogen on an ordinary nickel alloy anode in MCFC is generally considered to take place in the three phase zone, but anyway the area contributing to this reaction is limited. Therefore, in order to maintain a high performance of the fuel cell, it is necessary to keep this reaction responsible area as wide as possible, that is, it is needed to keep the porosity and specific surface area of the anode at a high level. In this study effective anodes are prepared for low temperature MCFC capable of enhancing the cell performance by using zirconium hydride at least in part of anode material.
K<sub>2</sub>CO<sub>3</sub> 수용액 이용 운전조건 변화에 따른 CO<sub>2</sub> 포집 특성 시험
정기진(Jung, Kijin),김진호(Kim, Jinho),이선기(Lee, Sunki),윤성필(Yoon, Sungpill),김효식(Kim, Hyosik),김현진(Kim, Hyeunjin) 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.11
온실가스 감축에 대응하기 위해서 CCS기술이 지구온난화 문제를 해결하는 중요한 기술로 부각되고 있다. CO₂ 포집기술 중 습식법에는 대표적으로 아민, 암모니아, K₂CO₃와 같은 흡수제를 이용한 연구가 진행되고 있다. 본 연구에서는 CO₂ 포집기술 중 하나인 K₂CO₃ 수용액을 이용하여 Bench급 CO₂ 포집설비에 대한 성능을 파악하기 위한 일환으로 15% CO₂를 공급하여 CO₂ 포집 안정화 시험을 진행하였다. 압력변화 및 단수 변화를 하여 실험을 진행하였고, 흡수탑 후단의 CO₂ 농도를 측정하여 CO₂ 포집 성능을 파악하였다.