• 한국수소및신에너지학회논문집
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• 제26권2호
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• pp.156-163
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• 2015

The fuel cells have been investigated in the applications of marine as the high efficient and eco-friendly power generating systems. In this study, modeling of IR Type molten carbonate fuel cell (Internal Reforming Type molten carbonate fuel cell) has been developed to analyze the feasibility of thermal energy utilization. The model is developed under Aspen plus and used for the study of system performances over regarding fuel types. The simulation results show that the efficiency of MCFC system based on NG fuel is the highest. Also, it is also verified that the steam reforming is suitable as pre-reforming for diesel fuel.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.117-118
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• 2011

South Korea is a ninth greenhouse gas emission nation in the world(2007) and is certainly to perform a duty to conduct reduction role by the Kyoto Protocol in 2013. waste concrete produced in the country is 45 million tons per year and these two issues are being came to the fore as major problems of society. However, if it utilizes wet carbonation system carbon using carbon dioxide and waste concrete as raw material it can expect effect of environmental protection and resource recycling. Furthermore, it can exploit another industry production.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.41-42
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• 2011

The purpose of this study is not only fixation of carbon dioxide using the cement-saturated solution by wet carbonating reaction but also evaluate the possibility of storage technology of Carbon dioxide. wet carbonation is reaction of CO₂ injection by CO₂ reactor. As a result of experiment, the carbon dioxide is fixed, and high-purity Calcium Carbonate is eluted.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.231-233
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• 2011

Carbon dioxide in atmosphere causes concrete carbonation which is the phenomenon, that is, the pH of concrete changes from 12-13 to 8.85-10. Even though the carbon dioxide concentration of indoor is higher than that of outdoor, the micro measurement has not carried out. The concentration of carbon dioxide was measured in three places. The data was used as boundary condition to FEM analysis for expectation of concrete carbonation depth. The affect of building finish materials to concrete carbonation was discussed.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2010년도 춘계 학술대회 제22권1호
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• pp.209-210
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• 2010

탄산화의 억제를 위해 사용되는 마감재에 대하여 $CO_2$ 투과계수 평가방법을 제시하고, 우레탄 및 아크릴의 $CO_2$ 투과계수를 비교 분석하고자 한다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2010년도 춘계 학술대회 제22권1호
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• pp.429-430
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• 2010

본 연구에서는 플라이애쉬가 다량 치환된 고유동 HVFAC 콘크리트의 실리카흄 사용량에 따른 콘크리트 특성에 대한 연구결과를 보고하고자 한다. 결과로서, 실리카흄 사용량이 $10{\sim}20kg/m^3$일 때, 콘크리트의 유동성과 충전성능이 가장 좋은 것으로 나타났다. 그리고 실리카흄 사용량이 증가할 수록 탄산화계수는 기하급수적으로 증가하는 것으로 나타났다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2010년도 춘계 학술대회 제22권1호
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• pp.221-222
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• 2010

본 연구에서는 콘크리트 탄산화진행을 보다 정확하게 표현하기 위해 콘크리트 투기계수를 탄산화 진행 모델에 적용하여 $CO_2$, $Ca(OH)_2$ 확산 계수를 유추하는 것이 본 연구의 목적이다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2010년도 춘계 학술대회 제22권1호
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• pp.217-218
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• 2010

본 연구에서는 탄산화에 의해 열화를 받은 콘크리트 부재의 보수 후 재열화과정을 Fick's 확산(diffusion) 제1법칙을 이용하여 모델링하였다. 여러 콘크리트 보수재 중 단면복구재에 의해 보수된 콘크리트 부재에 대한 이산화탄소에 재탄산화를 고려한 합리적인 예측식을 제시하였다. 연구결과는 보수재의 이산화탄소 확산 프로파일과 기존 구체콘크리트의 탄산화된 부분의 이산화탄소 확산 프로파일을 효과적으로 모델링할 수 있음을 보여줬다.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2004년도 추계 학술대회논문집
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• pp.141-144
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• 2004

An analysis procedure for the MCFC channel flow has been developed to predict the fuel cell performance. The channel formed by the uniformly distributed trapezoidal supports is approximated by the porous medium that yields the equivalent pressure drop. The Wavier-Stokes, energy, and species equations are solved to obtain the velocity, temperature and concentration fields for a local current density which is computed from electrochemical correlations. The fuel cell characteristics, such as the temperature, pressure, mole concentration, voltage and current density distributions, are presented and discussed.

• 대한기계학회논문집A
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• 제29권7호
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• pp.970-975
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• 2005

This paper presents a novel microgenerator of $CO_2$ (carbon dioxide) gas. $NaHCO_3$ (sodium bicarbonate) in a chamber is decomposed by the underlaid microheater. Alternatively, water droplet is caged by paraffin layer and released by heating. The released water dissolve HOC(COOH)$(CH_2COOH)_2$ (citric acid) powder and then, $NaHCO_3$ reacts with the solubilized HOC(COOH)$(CH_2COOH)_2$ and $CO_2$ is produced. Micropumps actuated by $CO_2$ generation were fabricated. A portable micro cell incubator of which pH is controlled by the produced $CO_2$ is also presented as one of the further applications.