• 한국환경과학회지
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• 제20권2호
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• pp.207-214
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• 2011

Non-Annex I parties announced the voluntary emission reduction targets including the U.S. in the conference of party. NAMAs would be focused to solve the negotiation clue for the post-kyoto regime. Since the country would not be involved in Annex I parties, the voluntary carbon market would be created for the greenhouse gas reduction targets. According to Bali Roadmap, voluntary carbon market should be constructed by the MRV manners since this country does not belong to Annex I parties. Carbon point system would be proposed by the ways of the international voluntary emission reduction credit. The voluntary carbon market should involve the potential GHG reduction credit and link with the ETS in the country. This study proposed the way of linkage between ETS and voluntary carbon market including the carbon-point system.

• Korean Chemical Engineering Research
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• 제57권6호
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• pp.826-831
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• 2019

Experimental data of phase equilibrium is reported for caprolactone acrylate in supercritical carbon dioxide. Bubble-point data was measured by synthetic method at temperatures ranging from (313.2 to 393.2) K and pressures up to 55.93 MPa. In this research, the solubility of carbon dioxide for the (carbon dioxide + caprolactone acrylate) system decreases as temperature increases at a constant pressure. The (carbon dioxide + caprolactone acrylate) system exhibits type-I phase behavior. The experimental result for the (carbon dioxide + caprolactone acrylate) system was correlated with Peng-Robinson equation of state using mixing rule. The critical property of caprolactone acrylate was predicted with the Joback and Lyderson method.

• Spatial Information Research
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• 제20권1호
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• pp.71-80
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• 2012

탄소포인트제도는 가정, 상업 시설의 전기, 가스, 수도 등 에너지 사용 절감량에 대한 인센티브를 제공하는 시민참여형 기후변화대응 프로그램이다. 현재, 기존 국가정책 및 연구는 사업장 위주의 온실가스 인벤토리 구축에 한정되어있고, 가정부문에 대한 탄소저감정책 시행효과에 대한 연구는 거의 이루어지지 않고 있다. 이에 본 연구에서는 탄소저감정책 중 탄소포인트제도를 중심으로 가정부문의 에너지 사용에 따른 탄소배출 저감에 관한 실증 분석을 목적으로 하였다. 우선, 성북구를 대상으로 가정부문의 전기, 가스 사용량 자료를 이용하여 탄소배출량을 산출하고, IPA 분석을 통해 행정동단위의 온실가스 배출변화의 공간패턴을 가시화하고 2007년부터 2009년까지 시계열 공간분석을 실시하였다. 또한 대응표본 t검정을 이용하여 사전-사후분석을 통해 탄소포인트제도의 효과 분석을 실시하였다. 특히, 공간통계기법과 핫스팟을 이용한 점사상의 국지적 분석을 통해 에너지 사용에 따른 탄소배출량의 공간적 분포 유형을 파악할 수 있었으며 실제 탄소배출저감 결과를 도출할 수 있었다. 향후 본 연구 결과는 지방자치단체 에너지 진단 등 온실가스 감축사업의 효과 평가와 녹색생활 개선 수립을 위한 다양한 영역에 활용될 것으로 기대한다.

• 청정기술
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• 제19권1호
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• pp.8-12
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• 2013

가변부피 투시셀이 장착된 고압 상평형 장치를 사용하여 이산화탄소 + 계면활성제 이성분계와 이산화탄소 + 계면활성제 + 물 삼성분계의 상평형 거동을 318 K부터 348 K의 온도범위에서 관찰하였다. 계면활성제로는 소르비탄 모노팔미테이트를 사용하였다. 이산화탄소 + 소르비탄 모노팔미테이트 이성분계에서 관측된 운점압력은 온도가 상승함에 따라 증가하며, 소르비탄 모노팔미테이트의 조성이 0.226 wt%에서 최대 운점압력이 측정되었다. 반면에 계면활성제의 농도를 0.1 wt%로 고정한 삼성분계에서 관측된 운점압력은 온도와 물의 조성이 증가함에 따라 커지는 것을 확인할 수 있었다. 물의 농도를 0.2 wt%로 고정한 삼성분계에서의 압력-조성의 곡선은 상대적으로 수평의 형태를 나타냈다. 이 때, 운점압력은 온도와 계면활성제의 조성이 증가함에 따라 상승함을 확인할 수 있다.

• 한국수소및신에너지학회논문집
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• 제35권1호
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• pp.40-47
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• 2024

Ammonia is drawing attention as carbon free fuel due to its ease of storage and transportation compared to hydrogen. This study suggests ammonia fueled solid oxide fuel cell (SOFC) system with electrochemical hydrogen compressor (EHC)-based recirculation. Performance of electrochemical hydrogen pump is based on the experimental data under varying hydrogen and nitrogen concentration. As a result, the suggested system shows 62.04% net electrical efficiency. The efficiency is 10.33% point higher compared to simple standalone SOFC system (51.71%), but 0.02% point lower compared to blower-based recirculation system (62.06%). Further improvement in the EHC-based SOFC recirculation system can be achieved with EHC performance improvement.

• 한국환경복원기술학회지
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• 제22권6호
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• pp.1-14
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• 2019

Carbon storage is one of the regulating ecosystem services provided by urban street trees. It is important that evaluating the economic value of ecosystem services accurately. The carbon storage of street trees was calculated by measuring the morphological parameter on the field. As the method is labor-intensive and time-consuming for the macro-scale research, remote sensing has been more widely used. The airborne Light Detection And Ranging (LiDAR) is used in obtaining the point clouds data of a densely planted area and extracting individual trees for the carbon storage estimation. However, the LiDAR has limitations such as high cost and complicated operations. In addition, trees change over time they need to be frequently. Therefore, Structure from Motion (SfM) photogrammetry with unmanned Aerial Vehicle (UAV) is a more suitable method for obtaining point clouds data. In this paper, a UAV loaded with a digital camera was employed to take oblique aerial images for generating point cloud of street trees. We extracted the diameter of breast height (DBH) from generated point cloud data to calculate the carbon storage. We compared DBH calculated from UAV data and measured data from the field in the selected area. The calculated DBH was used to estimate the carbon storage of street trees in the study area using a regression model. The results demonstrate the feasibility and effectiveness of applying UAV imagery and SfM technique to the carbon storage estimation of street trees. The technique can contribute to efficiently building inventories of the carbon storage of street trees in urban areas.

• 한국시스템다이내믹스연구
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• 제14권1호
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• pp.55-68
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• 2013

It is necessary to evaluate the greenhouse gases (GHGs) reduction policy by central and regional governments to set up the suitable GHG emissions measures. Quantitative, qualitative and synthetic methods have been adopted by previous researches to estimate GHG reduction policy. However, these methods mostly focused on the results of the reduction policy, rather than understanding and fixing the integrated structures of GHG emissions. In this research, System Dynamics(SD) was applied to 1 million green homes program, self-carfree-day system and carbon point program. The results showed that SD analyses could be appliable for the estimation of GHG reduction policy by developing the feedback loops and dynamic simulation model. SD can be consider as a supplementary tool to estimate the GHG reduction policies through the recognition of the structure in complex real system.

• Korean Chemical Engineering Research
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• 제54권2호
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• pp.206-212
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• 2016

Experimental data are reported on the phase equilibrium of propoxylated neopentyl glycol diacrylate in supercritical carbon dioxide. Phase equilibria data were measured in static method at a temperature of (313.2, 333.2, 353.2, 373.2 and 393.2) K and at pressures up to 27.82 MPa. At a constant pressure, the solubility of propoxylated neopentyl glycol diacrylate for the (carbon dioxide + propoxylated neopentyl glycol diacrylate) system increases as temperature increases. The (carbon dioxide + propoxylated neopentyl glycol diacrylate) system exhibits type-I phase behavior. The experimental result for the (carbon dioxide + propoxylated neopentyl glycol diacrylate) system is correlated with Peng-Robinson equation of state using mixing rule. The critical property of propoxylated neopentyl glycol diacrylate is predicted with Joback and Lyderson method.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2009년도 춘계학술발표대회 논문집
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• pp.37-42
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• 2009

We are in search for many method at 21th century thinking about the environment internationally. One is among them low carbon green city. Consequently this dissertation put a system solar energy key point of low carbon green city and purpose of low carbon green city Besides system and technique about the solar energy best practices try to do the investigation analysis. It's important of low carbon green city's environmental friendly system such as solar heat system, solar power generation, ecological greening, All these systems are connected each other and organize low carbon green city. A solar energy system uses pure energy of the situation directly most among the environmental friendly system. Energy saving and environment-friendly city in the world must do not a choice. However, recognition conversion and infrastructure of the Korea still has not come true. But South Korea and the international best practices is not the same system. But plan to solar city, the concept of green city in Cheongju, Deagu local government. And many meetings are in progress.

• 한국유기농업학회지
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• 제29권3호
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• pp.333-358
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• 2021

This study investigates consumers' purchasing behavior and perception of the low-carbon certificated agricultural product. To this end, we surveyed 1,000 consumers and the main findings are as follows. First, Even after six years of national certification, it is important to promote the low-carbon certification system due to insufficient awareness and purchase experience. Second, the certificated area is small at around 5% of the area of environment-friendly agricultural products and GAP certification, and certification is concentrated on fruit trees. Third, an appropriate level of high-priced strategy can be useful considering the cost of low-carbon certification, image management of low-carbon certificated agricultural products, and quality is the most important factor for consumers to consider when purchasing fresh agricultural products. Fourth, consumers recognized that the contribution of low carbon certification in reducing greenhouse gas emissions and preserving the environment was higher than that of environment-friendly agricultural products or GAP certification. Considering that, promotional activities linked to environment-friendly agricultural products and GAP certification may be effective when promoting low-carbon certification. Finally, the Ministry of Agriculture, Food and Rural Affairs is implementing a carbon point system linked to Green Card to revitalize low carbon certification, but 25.7% of consumers are aware of it, and 8.4% have little experience in issuing it.