• Proceedings of the Korea Society for Simulation Conference
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• 2003.06a
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• pp.141-147
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• 2003

자동차 엔진블럭을 생산하는 라인은 대표적인 흐름생산 방식의 가공라인이다. 자동차 제조업체에서는 새로운 차종을 개발하면 엔진가공라인을 새롭게 설계해야 할 필요성이 생긴다. 엔진가공라인을 설계하기 위해서는 연간생산목표량을 비롯한 여러 가지 요인들을 고려하게 되는데 설계단계에서 발생하는 오류는 향후 라인설치가 완료되어 양산에 들어가면 많은 문제점을 발생시킨다. 따라서 초기 설계안이 확정되면 검증절차를 거치게 되는데 이때 가장 유용한 도구가 시뮬레이션이다. 따라서 본 논문에서는 자동차 엔진블럭 가공라인 설계를 할 때 반영해야할 요인들과 설계안 검토시 고려해야 할 요인들을 고찰하고, 시뮬레이션을 이용한 실제 검증사례를 소개하고자 한다.

• KOREAN POULTRY JOURNAL
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• v.41 no.11
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• pp.174-177
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• 2009

가축사육단계 HACCP 양계 1호 인증 농장이 탄생(2008년 7월 14일)한 지도 벌써 1년이 훌쩍 지났다. 소비자가 원하는 안전하고 항생제 걱정 없는 친환경조건에서 사육된 축산물을 생산하고자 생산자들이 부단히 노력한 결과, 짧은 기간 동안 HACCP 인증 양계농가가 130개가 넘어섰다. 이번 호에서는 '안전, 위생, 안심'에 중점을 두고 친환경 양계산물생산을 위해 생산, 유통 부분까지 조직적으로 운영하는 이천 소재 이천농축원(대표 오치성)을 소개하고자 한다. 젊은 나이지만 현재, 이천채란지부의 지부장으로 활동하면서 지역발전에 앞장서는 오치성 사장은 선친으로부터 가업을 물려받아 2대째 양계업을 고수하며 최근 생산자들의 아이디어로 화제가 된 계란자판기를 선보인 다한 영농조합법인의 조합원이다.

• Proceedings of the Korean Vacuum Society Conference
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• 2012.02a
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• pp.111-111
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• 2012

지식경제부의 청정제조기반 산업원천개발사업의 일환으로 진행 중인 "초고진공펌프 개발" 과제 중 제 3 세부 과제인 "고진공펌프종합특성평가시스템 설계, 진단기술 개발" 과제에서 추진되고 있는 연구결과를 소개한다. 국내 초고진공펌프 개발 수준의 선진화를 위한 기본적인 초석 확립은 현존하는 모든 진공 발생 장치의 국제적 신뢰성이 있는 완벽한 성능평가의 구현에 있다고 할 수 있다. 고진공펌프개발 총괄 과제의 대명제는 "국제적 신뢰성을 가지는 상용화 제품의 완성"이며, 이를 위한 3세부과제의 추진 방향은 기 완료된 1단계 기술개발에 근거한 1세부과제 및 2세부과제와의 유기적인 infra를 통한 성공적인 지원체계 구축 및 상용화 제품 개발 단계의 모든 신뢰성 확보 전략을 수립, 수행하는 것을 골자로 하고 있다. 또한 2단계 사업 추진 동안 제품 개발 주체인 산업체에 모든 개발된 기술을 적용할 수 있는 기반 제공 및 상용화를 위한 성공적인 기술이전도 포함된다. 상용화 개발 완료 후인 Post Project 기간 동안에 발생할 수 있는 모든 지원 체계의 구축도 장기간에 걸친 연구 개발의 연장선상에서 추진되어야 될 것으로 예상된다. 상용화 단계의 내구성 및 신뢰성 확보를 위한 전제 조건은 대외적으로 공표할 수 있는 시험평가 데이터와 개발 주체에서 기밀 수준으로 유지해야만 하는 민감한 자료의 상시 생산 infra의 구축으로 볼 수 있다. 이러한 고진공펌프개발이라는 과제의 대명제를 완성하기 위하여 추진 연구개발 방향 등 향후 2년간의 최종 상용화에 필요한 국제 신뢰성, 공정대응성 확보 등 핵심사업 추진내용 및 infra 구축의 상세설계 로드맵 초안을 고찰하고자 한다. 본 연구는 지경부 산업원천기술개발사업 중 "초고진공펌프 개발" 사업의 제 3 세부과제인 "고진공펌프종합특성평가시스템 설계, 진단기술 개발" 과제(과제번호: 10031836)에서 수행된 연구결과의 일부임.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.597-601
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• 2006

There are considerable amount of man power and time spent for analysis and selection of various materials due to the inadequate application system and rapid searching process of material related information in each stage of building production process. Also, due to the insufficiency in recycling system of important information created for each process, they are hoarded at each task stage and project completion. As a result, because of the repetition of the similar/identical tasks on each process, it is the major reason for impeding the efficient employment of manpower of the company and decreasing competition of the company. Moreover, in selecting finish material in the project field, there are many difficulties due to the lack of technical information such as product characteristics and field applications. The construction quality also affects the profit and loss of the product which calls for a need to develop continued information management system that the finish material related examples could be shared in real time. The objective of this study is to propose a building finish material information which the real time research and application is possible to raise the productivity. TO do this, the current material information task status analysis and questionnaire research should be conducted to understand the demand of system development and reflect the result onto the system for easy access and application. Therefore, the building finish material information system for enhancement of productivity of construction task proposed in this study is expected to be utilized in enhancement of construction quality, maximization of company profit, and strengthening of company competition.

• Journal of the Economic Geographical Society of Korea
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• v.19 no.3
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• pp.550-565
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• 2016

The size of Korean and global cosmetic industry market are consistently growing and the domestic cosmetic industry's rate of total production increase is higher than GDP in Korea. In addition, the Korean Wave has strengthened not only this phenomenon but also the increase of exports. For these reasons, the purpose of this paper is to analyze Korean cosmetic industry regarded as a new growth engine. For this study, Porter's Value Chain theory, Mudambi's Smile of Value Creation, Cosmetic GMP by ISO, and the production process on cosmetic industry are used as tools. As a result, Korean cosmetic industry comprises five nodes value chains: R&D, Raw Material Manufacture, Container Manufacture, Cosmetic Manufacture, and Marketing. And then, based on this result, the spatial analysis is conducted to identify spatial distribution characteristics of each node.

• Resources Recycling
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• v.24 no.2
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• pp.69-78
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• 2015

Recently, the importance of efficient resource management has been highlighted due to the uncertainty of its security. Developed countries promote the legislative provision and transition of industrial structure to maximize the efficiency of resource use through supporting the sustainable resource management at national level. Meanwhile Korea has very sensitive industrial structure along with the international resource supply and demand conditions. It is acutely necessary to improve the resource productivity with the various action plans such as the increase of recycling rate and the establishment of methodical resource management system. Especially, the study on the direction of each flow stage and the concrete action plans for using resource efficiently in the life-cycle of resource will be required. Therefore, this study suggests the future direction of each flow stage(production stage and circulatory stage), and the concrete action plans to improve the present problems of resource management in Korea.

• Korean Chemical Engineering Research
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• v.55 no.5
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• pp.609-617
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• 2017

Lignocellulosic biomass is a renewable resource for production of biofuels and biochemicals. Furfural (FF) is an important platform chemical catalytically derived from the hemicellulose fraction of biomass. Tetrahydrofurfuryl alcohol (THFA) is a FF derivative and can be used as an eco-friendly solvent with thermal and chemical stability. Despite large numbers of experimental studies for catalytic conversion of FF to THFA, few research have conducted on the economic feasibility for large-scale THFA production from FF. At the stage of assessment of the potential for commercialization of conversion technology, a large-scale process study is required to identify technological bottleneck and to obtain information for solving scale-up problems. In this study, process simulation and technoeconomic evaluation for catalytic conversion of FF to THFA are performed, as the following three steps: integrated process design, heat integration, and economic evaluation. First, a large-scale process including conversion and separation processes is designed based on experimental results. When the FF processing rate is 255 tonnes per day, the FF-to-THFA yields are 63.2~67.9 mol%. After heat integration, the heating requirements are reduced by 14.4~16.4%. Finally, we analyze the cost drivers and calculate minimum selling price of THFA by economic evaluation. The minimum selling price of THFA for the developed process are $2,120~2,340 per tonne, which are close to the current THFA market price.

• Clean Technology
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• v.9 no.2
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• pp.87-100
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• 2003

The aim of study was to suggest a methodology for applying cleaner production technology in dyeing & finishing process of textile materials. To accomplish cleaner production, we performed consulting activity in dyeing factory, which composed of following different procedures. First, we organized consulting team with specialists for dyeing, energy and chemicals, and visited dyeing companies for the purpose of doing basic investigation such as analysis of process, chemicals & effluents, condition of equipment and process flow of products. Environmental aspect of raw materials (dyestuff, chemicals) was assessed by TOC, COD, BOD, and effluent of that was assessed by TOC, COD, BOD, TDS and pH. Second, We find out the problems in dyeing&finishing process from the view point of dyeing process, energy, raw materials and process management by utilizing MB (material balance), LCA(Life Cycle Assessment), EB(Energy Balance). Third, we generated the solutions to achieve optimal process condition by brain storming method, and then implemented the solutions to each process. Finally, we determined their effectiveness after considering the results of repeating trials for the solutions. Cleaner production could be achieved by keeping optimal process conditions, equipment modification, improved production management, and on-site reuse or recycling.

• Journal of Life Science
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• v.13 no.6
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• pp.788-793
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• 2003

Production of chiral phenyl oxirane by Rhodosporidium toruloides SJ-4 was investigated. Racemic phenyl oxirane was kinetically resolved by enantioselective hydrolysis reaction by epoxide hydrolase of R. toruloides in two-phase hollow-fiber reactor system. Dodecane with high concentration of the racemic substrate passed through the lumen side and cell suspension was recirculated through the shell side of the hollow fiber reactor For the removal of phenyl-1, 2-ethandiol to reduce the product inhibition to biocatalysts, another hollow-fiber reactor was employed to extract the diol. Racemic phenyl oxirane up to 300 mM was enantioselectively resolved with high enantiopurity (>99% ee) in hollow-fiber reactor system.

• The Journal of Korean Institute for Practical Engineering Education
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• v.3 no.2
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• pp.136-141
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• 2011

The current tendency on development and change of equipment system in the factory are overlapped with the specific field of the existing systems such as PLC, DCS and SCADA, and the limited portion of the systems in the specific field stands in their own field. Specially, systematic integration, inspection control system and manufacturing management system, management information system are getting closely linked and therefore we increasingly need the open system. Meeting the needs, manufacturing automated equipments in the factory overcoming the shortcomings of unlinked unit equipment recently are getting changed to the phase closely linking with other systems. The training systems for the university, however, have not kept up with the needs from the industry, in spite that fused complex function and performance are asked in the field. To solve the problems, we suggest that the training courses and the equipment designed for the undergraduate education.