• Title/Summary/Keyword: Pilot scale system

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Characteristics of $H_2$/CO ratio control of syngas by waste gasification (폐기물 가스화 합성가스의 $H_2$/CO 생산비 제어 특성)

  • Gu, Jae-Hoi;Kim, Su-Hyun;Kim, Mun-Hyun;Choi, Jong-Hyea;Heo, Su-Jung;Yoon, Ki-Soo;Kim, Soung-Hyoun
    • 한국신재생에너지학회:학술대회논문집
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    • 2008.05a
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    • pp.475-478
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    • 2008
  • The 3 ton/day-scale pilot plant consists of waste press, feed channel, fixed bed type gasification & melting furnace, quench scrubber, syngas refinery facility and flare stack. $H_2$/CO ratio of gasification syngas using the solid waste and sludge in the 3 ton/day gasifier showed about 1. Gasification melting furnace was operated $1,300{\sim}1,600^{\circ}C$. $H_2$/CO ration control system was obtained $H_2$/CO ratio 2 and 3.

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A Strategy for Production of Digital Elevation Models in Korea

  • Lee, Chung-Kyung;CHO, Kyu-Jon;RYU, Joong-Hi
    • Korean Journal of Geomatics
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    • v.3 no.2
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    • pp.107-114
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    • 2004
  • The National Geographic Information Institute (NGII) in korea, through the National Geographic Information System (NGIS) Program, has prepared to generate and disseminate digital elevation data for Korea. This is a pilot research to propose a policy for production, maintenance, and supply of Korea Digital Elevation Data(KDED). Customer demands for accuracy and resolution of DEM was surveyed through a questionnaire. In order to investigate the quality, the technical efficiency and the production cost, a tentative DEM in a small test site was generated based on digital topographic maps (original paper map scale 1:5,000), analytical plotter, and LIDAR. The Accuracy standard for KDED was derived based on source data generation methods. As a result of this research, a uniformly spaced grid model was recommended for KDED. Its preferable grid space is 5m in urban areas and its vicinity, and 10m in field and mountainous area. LIDAR has been valuated as a proper KDED generation method fulfilling customers' demands for the accuracy.

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Atmospheric and Pressurized Operation of a 25 kW MCFC Stack (25 kW급 용융 탄산염 연료 전지 스택의 상압 및 가압 운전)

  • Koh, Joob-Ho;Seo, Hai-Kung;Lim, Hee-Chun
    • Proceedings of the KSME Conference
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    • 2000.04b
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    • pp.264-269
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    • 2000
  • As a part of the ongoing effort towards commercial application of high-temperature fuel cell power generation systems, we have recently built a pilot-scale molten carbonate fuel cell power plant and tested it. The stack test system is composed of diverse peripheral units such as reformer, pre-heater, water purifier, electrical loader, gas supplier, and recycling systems. The stack itself was made of 40cells of $6000cm^2$ area each. The stack showed an output higher than 25kW power and a reliable performance at atmospheric operation. A pressurized performance was also tested, and it turned out the cell performance increased though a few cells have shown a symptom of gas crossover. The pressurized operation characteristics could be analyzed with numerical computation results of a stack model.

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The Development of Flameless Regenerative Burner for the Industrial Furnaces (공업로용 무화염식 축열버너의 국산화 개발)

  • Kim, Won-Bae;Yang, Je-Bok
    • Journal of the Korean Society of Combustion
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    • v.15 no.2
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    • pp.27-33
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    • 2010
  • Recently, much attention has been paid to utilizing highly preheated air up to $1,000^{\circ}C$ through waste gas in industrial furnaces. The regenerative burner technology has shown to provide significant reduction in energy consumption (up to 60%), downsizing of the equipment (about 30%) and lower emissions (about 30%) while maintaining high thermal performance of the system since 2000. The object of this study is to develop the flameless regenerative burner for industrial furnaces based on the FLOX(Flameless Oxidation) principle and it has been designed and manufactured as pilot scale. Performance tests are experimentally done and their results are discussed. They showed 1) a very good uniformity in temperature distribution, 2) about 100 ppm in NOx at the temperature $1,300^{\circ}C$, 3) about 95% in temperature efficiency. Besides, the regenerative burner has advantage in easy maintenance and high usage rate of regenerator due to the separate and portable type of heat exchanger.

Technology Development for Pilot Scale Syngas Production and Utilization System using Oil Sand (오일샌드를 이용한 pilot급 합성가스 제조 및 활용 시스템 개발)

  • Chung, Seok-Woo;Lee, Do-Yeon;Jung, Woo-Hyun;Hwang, Sang-Yeon;Park, Jun-Sung
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.11a
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    • pp.537-540
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    • 2009
  • 오일샌드는 아스팔트와 같은 중질유를 10% 이상 함유한 모래 또는 사암으로서, 겉으로 보기에는 시커먼 흙이나 모래처럼 보이나 내부에는 모래(점토)와 같은 광물질이 70~80%, 에너지원으로 활용이 가능한 중질유 성분인 bitumen이 10~18%, 물이 3~5% 정도 혼합되어 있다. 본 연구에서는 이러한 오일샌드 활용방안 개발을 위하여 오일샌드로부터 bitumen의 추출 및 증류 특성에 대한 시험을 진행하였으며, 가스화를 통한 합성가스 제조, 합성가스 중 분진제거 및 탈황, CO/$H_2$비 제어를 위한 합성가스 전환 등의 시험을 진행하였는데, pilot급 시스템을 이용한 합성가스 제조 시험 결과 중질잔사유를 5~7 kg/h 공급하는 조건에서 CO 40~50%, $H_2$ 20~30%, $CO_2$ 10~20% 조성의 합성가스 18~22 $Nm^3$/h를 제조하였다.

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Assessment of Free Water Surface Constructed Wetland Design Parameters for the Reduction of Agricultural Nonpoint Source Pollution (농업유역 비점원오염 저감을 위한 자유수면형 인공습지 설계인자 평가)

  • Jang, Jeong-Ryeol;Kwun, Soon-Kuk;Choi, Sun-Hwa
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 2005.10a
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    • pp.637-642
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    • 2005
  • The objective of this study is to evaluate design parameters of free water surface constructed wetland for the reduction of agricultural nonpoint source pollution. From literature review, the key design parameters were selected as influent concentration, influent water volume, hydraulic retention time and wetland system arrangement. The design value for each parameter was established after pilot study. Full-scale constructed wetland on the basis of the designed values was constructed to evaluate those reasonableness. The results of this study showed that the designed values for free water surface constructed wetland were appropriate for the reduction of agricultural nonpoint source pollution.

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Connection Program of Construction New Technology and Results of Construction Transportation R&D (건설교통R&D성과의 건설신기술 연계방안)

  • Park, Hwan-Pyo;Lee, Kyo-Sun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2010.05b
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    • pp.17-20
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    • 2010
  • Recent Construction and Transportation R&D projects are larger in size, investment scale has been increasing rapidly. However, the results of Construction and Transportation in R & D are papers, patents and other results. So, the application record of R&D in the construction field is very lacking. In particular, Construction New Technology's ratio in the midst of R&D's results are about 2.29%. Therefore, this study suggested program that R&D's results has been connected Construction New Technology. The introduction of the new system has greatly increased Construction New Technology and the results of excellent &D will be applied in construction field. So, Cost-reduction and technology's improvement are expected.

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A Proposal for Generation of Digital Elevation Models in Korea

  • Lee, Chang-Kyung;Park, Byung-Gil;Kim, Young-An;Min Heo
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2004.02a
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    • pp.73-81
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    • 2004
  • National Geographic Information Institute (NGII) in Korea, through National Geographic Information System (NGIS) Program, has prepared to generate and disseminate digital elevation data for Korea. This is a pilot research to propose a policy for generation, maintenance, and supply of Korea Digital Elevation Data (KDED). Customer demands for accuracy and resolution of DEM was surveyed through questionnaire. In order to investigate the quality, the technical efficiency and the production cost, a tentative DEM in a small test site was generated based on digital topographic maps (original paper map scale 1 :5,000), analytical plotter, and LIDAR. Accuracy standard for KDED was derived based on source data and generation methods. As results of this research, we recommend uniformly spaced grid model for KDED. Its preferable grid space is 5m in urban and its vicinity; and 10m in field and mountainous area. LIDAR has been valuated as a proper KDED generation method fulfilling customers demand for the accuracy.

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Effect of kinesio taping on gait function in elderly individuals with knee osteoarthritis: A pilot study

  • Park, Jaeyoung;Paik, Youngrim;Oh, Donghwan
    • Journal of International Academy of Physical Therapy Research
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    • v.10 no.3
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    • pp.1830-1833
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    • 2019
  • Background: Knee osteoarthritis (OA) causes not only pain during walking but also walking disorders. Therefore, intervention for older patients with OA is important. Objective: To study investigated the effects of kinesio taping (KT) on pain and walking ability in elderly persons with knee OA. Design: One group, pre-post design Methods: This study enrolled 12 community-dwelling elderly people with knee OA. KT was applied on the surrounding structures, including the patellar and bilateral lateral ligaments. Assessment was made using the visual analog scale and GAITRite system to measure pain and walking ability during KT and non-KT conditions. Results: In this study, compared to the non-KT condition, the KT condition showed a significant improvement in walking ability and pain reduction during walking (velocity, cadence, step length, and stride length) (p < 0.05). Conclusion: This study demonstrated that knee KT has a positive effect on pain reduction and walking ability of the elderly with OA.

Study on Status of Barrier Free Certification & Improvement Strategies (여객자동차 터미널 이동편의시설 BF 실태 및 개선방안 연구)

  • Park, Shin-Won;Cho, Young-Tae
    • Land and Housing Review
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    • v.7 no.4
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    • pp.225-237
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    • 2016
  • This study is to investigate actual condition of passenger terminals, public facilities which are used by unspecified individuals, with high spread effect of certification system of Barrier Free introduced in 2007, evaluate possibility of the certification and prepare an effective way for certification in order to spread and settle the certification system. According to the investigation on the facilities' equipment level of 349 passenger terminals, which being nationally operated, 217 terminals could be certified and non-certified were 58. And, 29 was evaluated as the passenger terminals with high possibility to get Barrier Free certification by small scale of remodeling. The level of Barrier Free of investigated passenger terminals, according to the actual condition with certification index, were 40~55 percent. While the level of Barrier Free of internal facilities of the terminals was over 90percent, the level of sanitary facilities, information facilities, etc. fell short of 50 percents. In this study, pilot project of Barrier Free certification is proposed for enhance of passenger terminal facilities. Moreover, the selection of passenger terminals with high possibility of certification, local governments' strong will as the targets of pilot project for improvement of amenity level and Barrier Free certification and monitoring the project results are the way of the project.