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        • KCI등재후보

          물의 전기분해에 의한 수소 제조기술과 경제성 분석

          심규성,김창희,박기배,Sim, Kyu-Sung,Kim, Chang-Hee,Park, Kee-Bae 한국수소및신에너지학회 2004 한국수소 및 신에너지학회논문집 Vol.15 No.4

          According to the rapid depletion of the fossil fuels, the electricity and hydrogen will gradually take charge of the future energy supply. Especially, in order to control the supply and demand of electricity, energy storage medium is necessary and this could be solved by the combination of water electrolysis and fuel cell. Although electricity can be generated from such alternative energies as hydropower, nuclear, solar, and wind-power resources, alternative energy storage medium is also required since regenerative energies, solar and wind-powers, are intermittent energy resources. In this regard, hydrogen production from water electrolysis was recognized as a superb method for electricity storage. In this work, the current development and economic status of alkaline, solid polymer, and high temperature electrolysis were reviewed, and then the practical use of water electrolysis technology were discussed.

        • KCI등재

          국내 부생수소 현황과 수소 유통 인프라

          심규성,김종원,김정덕,황갑진,김흥선,Sim, Kyu-Sung,Kim, Jong-Won,Kim, Jung-Duk,Hwang, Gap-Jin,Kim, Heung-Sun 한국수소및신에너지학회 2002 한국수소 및 신에너지학회논문집 Vol.13 No.4

          A long-term energy system in the future is expected to be based on the ideal circulation system between water and hydrogen in the sense that the hydrogen prepared from water eventually returns to water again after its use. Currently, with respect to the hydrogen energy system, it is predicted that the turning-point at which the production cost of hydrogen will become to be lower than that of fossil fuels would be after 2010. However, fuel cell technology would be able to be practically used for the applications to the transportation vehicles and small-scale power sources from 2004, and therefore, an efficient construction of the infrastructure covering hydrogen production and supply systems would be required with short-/mid-term technologies for the $CO_2$ reduction associated with fossil fuel utilization. In this paper, the hydrogen quantity available in domestic market has been estimated focusing on the hydrogen by-produced from domestic industries, and also the infrastructure for hydrogen-driven vehicles like fuel cell cars has been reviewed.

        • 전기화학환원에 의한 이산화탄소의 수소화 반응연구

          심규성,김종원,김연순,명광식,Sim, Kyu-Sung,Kim, Jong-Won,Kim, Yeon-Soon,Myeong, Kwang-Sik 한국수소및신에너지학회 1998 국제학술대회 Vol.9 No.1

          지구온난화방지를 위한 이산화탄소 고정화 기술로는 주로 접촉수소화에 의한 탄화수소의 제조가 주로 연구, 검토되고 있으나 값비싼 수소의 확보가 큰 걸림돌로 작용하고 있으며, 기타 해조류 합성 등에 의한 생물학적 고정화 방법도 연구되고 있다. 전기화학적 환원에 의한 이산화탄소 고정화 방법은 전해질 용액중 촉매전극으로 전기화학반응을 일으켜 이산화탄소를 메탄, 에탄, 알코올 등으로 전환시키는 것으로 접촉수소화 방법과 같은 원리로 생각할 수 있으나 전기분해와 동시에 수소화 반응을 일으키므로 장치가 간단하고 심야의 잉여전력을 이용할 수 있는 동의 장점으로 최근 연구개발이 이루어지고 있다. 본 연구에서는 환원전극으로 구리 및 페롭스카이트($La_{0.8}Sr_{0.2}CuO_3$) 분말을 시료로 하여 제조한 전극을 사용하였고, 기준전극으로는 Ag/AgCl, 상대전극으로는 백금전극을 사용하였다. 전해액은 $KHCO_3$ 수용액에 이산화탄소를 포화시키고 이를 반응조에 순환시키는 연속흐름식 전해환원시스템을 사용하였다. 환원전극의 크기는 $2{\times}2cm$, 상대전극의 크기는 $2{\times}6cm$의 것을 사용하였고, 전해환원 결과 얻어지는 기상의 생성물과 액상의 생성물을 분석하였다. 또한 전해질의 농도, 페롭스카이트 전극의 제조방법에 따라 환원전류의 크기 및 반응생성물의 종류와 발생량을 측정하였다. The catalytic hydrogenation of carbon dioxide has been studied for the fixation of carbon dioxide to mitigate global warming problems, but it needed hydrogen, which the price is still high. Recently, the electrochemical reduction of carbon dioxide has been drawn attractions because carbon dioxide could be converted to the valuable chemicals such as methane, ethane and alcohols electrochemically in the electrolyte solution using a catalytic electrode. This system is simple because the water electrolysis and hydrogenation take place at the same time using the surplus electricity at midnight. In this work, a continuous electrochemical reduction system was fabricated, which was composed of the reduction electrode (copper or perovskite type, $2{\times}2cm^2$), reference electrode(platinum, $2{\times}6cm^2$), standard electrode(Ag/AgCl), and potassium bicarbonate electrolyte solution saturated with carbon dioxide. The quality and quantity of the products and reduction current were analyzed, according to the electrolyte concentration and electrode type.

        • Ti Mesh 처리 촉매전극을 이용한 고체고분자 전해질 전기분해 특성연구

          심규성,김연순,김종원,한상도,Sim, Kyu-Sung,Kim, Youn-Soon,Kim, Jong-Won,Han, Sang-Do 한국수소및신에너지학회 1996 국제학술대회 Vol.7 No.1

          Alkaline water electrolysis has been commercialized as the only large-scale method for a long time to produce hydrogen and the technology is superior to other methods such as photochemical, thermochemical water splitting, and thermal decomposition method in view of efficiency and related technical problem. However, such conventional electrolyzer do not have high electric efficiency and productivity to apply to large scale hydrogen production for energy or chemical feedstocks. Solid polymer electrolyte water electrolysis using a perfluorocation exchange membrane as an $H^+$ ion conductor is considered to be a promising method, because of capability for operating at high current densities and low cell voltages. So, this is a good technology for the storage of electricity generated by photovoltaic power plants, wind generators and other energy conversion systems. One of the most important R&D topics in electrolyser is how to minimize cell voltage and maximize current density in order to increase the productivity of the electrolyzer. A commercialized technology is the hot press method which the film type electrocatalyst is hot-pressed to soild polymer membrane in order to eliminate the contact resistance. Various technologies, electrocatalyst formed over Nafion membrane surface by means of nonelectrolytic plating process, porous sintered metal(titanium powder) or titanium mesh coated with electrocatalyst, have been studied for preparation of membrane-electrocatalyst composites. In this study some experiments have been conducted at a solid polymer electrolyte water electrolyzer, which consisted of single cell stack with an electrode area of $25cm^2$ in a unipolar arrangement using titanium mesh coated with electrocatalyst.

        • Cu/ZnO/Cr<sub>2</sub>O<sub>3</sub>/Al<sub>2</sub>O<sub>3</sub> 촉매를 이용한 이산화탄소의 수소화 연구

          심규성,한상도,김종원,김연순,명광식,박기배,Sim, Kyu-Sung,Han, Sang-Do,Kim, Jong-Won,Kim, Youn-Soon,Myoung, Kwang-Sik,Park, Ki Bae 한국수소및신에너지학회 1996 국제학술대회 Vol.7 No.2

          지구온난화를 방지하기 위하여 대기중에 방출되는 이산화탄소를 고정화시키는 기술의 하나로 이산화탄소를 접촉수소화시키는 연구를 수행하였다. 수소화 촉매로는 $Cu/ZnO/Cr_2O/Cr_2O_3/Al_2O_3$를 기본으로 하여 여기에 팔라듐을 추가한 촉매들을 이용하였으며, 200서 $350^{\circ}C$ 사이의 온도에서 상압 및 고압의 조건에서 수소화 반응을 행하였다. 그 결과 수소화 반응에 가장 적합한 반응조건은 반응온도 $250^{\circ}C$, 반응압력 30기압 이상에서 메탄올의 선택도와 수율이 제일 좋았다. 그러나 예상한 바와는 달리 팔라듐의 첨가에 의한 반응성의 향상은 없었다. The aim of this study is the development of technologies of methanol production from carbon dioxide by catalytic hydrogenation. Experiments about carbon dioxide hydrogenation by catalyst mixed with CuO, ZnO, $Cr_2O_3$ and $Al_2O_3$ were conducted to find optimum catalyst and reaction condition. Reactions were carried out at atmospheric and high pressures between 200 to $350^{\circ}C$. High yield of methanol was obtained with $Cu/ZnO/Cr_2O/Cr_2O_3/Al_2O_3$ catalyst at $250^{\circ}C$ and above 30 atmospheric pressure. There was not any increament of hydrogenation reactivity for the catalysts which was made by the addition of Pd to $Cu/ZnO/Cr_2O/Cr_2O_3/Al_2O_3$.

        • 수소저장합금을 이용한 수소저장탱크의 구조에 따른 수소저장 특성 연구

          심규성,명광식,김정덕,김종원,Sim, Kyu-Sung,Myung, Kwang-Sik,Kim, Jung-Duk,Kim, Jong-Won 한국수소및신에너지학회 2002 한국수소 및 신에너지학회논문집 Vol.13 No.1

          In order to utilize hydrogen energy in a large-scale in the future, development of effective hydrogen storage method is essentially required as well as that of efficient hydrogen production method. The hydrogen storage method using metal hydrides has been holding the spotlight as a safer and higher-density hydrogen storage method than conventional hydrogen storage methods such as liquid hydrogen or compressed hydrogen storage method. However when metals react with hydrogen to store hydrogen as metal hydrides, they undergo exothermic reactions, while metal hydrides evolve hydrogen by endothermic reaction. Therefore, hydrogen storage tank should have such structure that it can absorb or release reaction heat rapidly and efficiently. In this study, a review on the improvement of the heat release and absorption structure in the hydrogen storage tank was conducted, and as a result, a new type of hydrogen storage tank with the structure of vertical-type wall was designed and manufactured. Experimental results showed that this new type of tank could be used as an efficient hydrogen storage tank because its structure is simpler and manufacture is easier than cup-type hydrogen storage tank with the structure of packed horizontal cup.

        • 2-프로파놀의 탈수소화에 의한 수소제조 연구

          심규성,김종원,김연순,박기배,Sim, Kyu-Sung,Kim, Jong-Won,Kim, Youn-Soon,Park, Ki-Bae 한국수소및신에너지학회 1995 국제학술대회 Vol.6 No.1

          Chemical heat pump is one of the energy conversion technologies, which enables to use waste heat as a source of high grade heat. In 2-propanol/acetone system, the dehydrogenation of 2-propanol is an endothermic(heat absorption) reaction, and can be used to generate hydrogen because 2-propanol can be converted to acetone and hydrogen at low temperature(about $8^{\circ}C$) using catalyst. For the dehydrogenation of 2-propanol 5% Ru catalyst based on activated carbon is the best one at the reaction temparature of $83^{\circ}C$.

        • KCI등재후보

          복지다원주의(Welfare Pluralism)의 관점에서 본 청소년을 위한 학교스포츠클럽 공급체계의 효율화 방안

          심규성 ( Kyu Sung Sim ),유병열 ( Byung Ryul Yoo ) 한국체육정책학회 2013 한국체육정책학회지 Vol.11 No.2

          This study aims to develop the effective school sport club provision system in local government in order to properly support the youth. For the purpose, this study discussed, at first, the meaning of welfare pluralism. In the part of empirical analysis, the current school sport club provision system for the youth was profoundly treated. And, being based the analysis on the current school sport club provision system, this study finalized discussions by suggesting the effective way of developing the school sport club provision system for the youth on local government level. Especially, the desirable roles of each participant in the system of welfare pluralism for the youth were adequately suggested by combining public and private sectors together. The study also claimed the importance of liking participants and integrating related services in managing the school sport club provision system based on welfare pluralism.

        • KCI등재후보

          AHP를 이용한 한국형 스포츠복지에 대한상대적중요도 및 결정요인 분석: 스포츠참가 Client를 중심으로

          심규성 ( Kyu Sung Sim ) 한국체육정책학회 2014 한국체육정책학회지 Vol.12 No.1

          In this study, the relative importance of the Korean Sport Welfare and Sport Welfare for the analysis of the determinants of the key factors critical literature review and interviews with experts to configure the survey questions based on it examined the possibility of the use of AHP, and then it Empirical studies were combined for this study based on the purpose of the ordinance passed by sport welfare promotion support to target the residents of the Incheon area of research institutions to assist researchers to collect data directly with the visit were examined. As a result, first, to determine the welfare of Korean sport most important consideration is that the country and the government``s active support can be seen. Second, the Korean Sport Welfare aspects of the execution model to determine the beneficiaries of the service-oriented, client growth, progressive, and realize their full potential default, with a tendency to look at the presence should be approached from a humanist perspective. Third, to determine the supply of Korean Sport Welfare aspects of the subject in order to settle the Korean Sport Welfare Act and the Act or the regulations enacted for the supply of the policy will be very important that the subject can be seen. Fourth, determine the well-being of Korean sport practice centered on the principal aspects of the elderly can be seen that the need for access. Finally, the concept of sports welfare it is clearly established and well-being is based on the sport in order to contribute significantly to social welfare welfare sport of concept formation in the course of the review of fire does not issue enough sport for the welfare of the welfare system as a residual presence, will not be able to exert its function properly.

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