• Journal of Climate Change Research
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• v.8 no.4
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• pp.357-367
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• 2017

Electricity generation in Korea mainly depends on thermal power and nuclear power. Especially the coal power has led to the increase in $CO_2$ emissions. This paper intends to analyze the current status of $CO_2$ emissions from electricity generation in Korea during the period 1990~2016, and apply the logarithmic mean Divisia index (LMDI) technique to find the nature of the factors influencing the changes in $CO_2$ emissions. The main results as follows: first, $CO_2$ emission from electricity generation has increased by $165.9MtCO_2$ during the period of analysis. Coal products is the main fuel type for thermal power generation, which accounts about 73% $CO_2$ emissions from electricity generation. Secondly, the increase of real GDP is the most important contributor to increase $CO_2$ emissions from electricity generation. The carbon intensity and the electricity intensity also affected the increase in $CO_2$ emission, but the energy intensity effect and the dependency of thermal power effect play the dominant role in decreasing $CO_2$ emissions.

• Transactions of the KSME C: Technology and Education
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• v.1 no.1
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• pp.123-128
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• 2013

Carbon dioxide Capture and Storage (CCS) is one of the key players in greenhouse gas (GHG) reduction portfolio for mitigating climate change. CCS makes it possible not only to reduce a huge amount of carbon dioxide directly from coal power plant but also to maintain the carbon concentrated-energy infrastructure. The objective of the present paper is to review and introduce R&D progress and large scale demonstration plan focused on marine geological storage in Republic of Korea.

• Journal of Korean Society for Geospatial Information Science
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• v.20 no.4
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• pp.77-87
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• 2012

Discussion on North Korea as UN-REDD (Reduced Emissions from Deforestation and Degradation in developing countries) project target continues with a view to preventing deforestation and to securing CER(certified emission reduction) for South Korea. However, due to North Korea's political shutdown, it is hard to acquire information required for the REDD project registration. This research intends to acquire objective data using satellite images in the Mt. Geumgang. More than 20% of entire forested area were disappeared during the past two decades mainly due to conversion into agricultural farming land. Further, it is expected that persistent deforestation will go on. The reduction potential of the carbon emission is estimated as approximately 617,000 tCO2/year~663.000 tCO2/year. Thus, Mt. Geumgang is considered as realistic REDD target, which is attractive to South Korea, given that the obligation to reduce greenhouse gas emission is likely to be imposed upon the country. Further, political and social benefits due to reduced military conflict make Mt. Geumgang as UN-REDD project target invaluable.

• Journal of the Korean Institute of Gas
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• v.16 no.6
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• pp.55-66
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• 2012

The practical way to minimize the greenhouse gas is to reduce the emission of carbon dioxide. For this reason, CCS(Carbon Capture and Storage) technology, which could reduce carbon dioxide emission, has risen as a realistic alternative in recent years. In addition, the researcher is recently working into ways of applying CCS technologies with deep saline aquifer. In this study, the evaluation model on the feasibility of $CO_2$ sequestration in the deep saline aquifer using ANN(Artificial Neural Network) was developed. In order to develop the efficiency-evaluation model, basic model was created in the deep saline aquifer and sensitivity analysis was performed for the aquifer characteristics by utilizing the commercial simulator of GEM. Based on the sensitivity analysis, the factors and ranges affecting $CO_2$ sequestration in the deep saline aquifer were chosen. The result from ANN training scenario were confirmed $CO_2$ sequestration by solubility trapping and residual trapping mechanism. The result from ANN model evaluation indicated there is the increase of correlation coefficient up to 0.99. It has been confirmed that the developed model can be utilized in feasibility of $CO_2$ sequestration at deep saline aquifer.

• 월간 기계설비
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• s.246
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• pp.36-53
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• 2011

서울특별시는 지구온난화 방지를 위한 국제적인 온실가스 감축 노력의 일환으로 공공기관을 중심으로 신재생에너지 보급 사업을 추진중에 있다. 서울시는 이 사업을 추진하면서 대기오염물질 저감과 더불어 연간 1만2162톤 $CO_2$ 정도의 온실가스 감축효과로 연간 2억1800만원을 절약하고, 향후 10년간 총 21억8900만원에 이르는 경제적 부가가치가 창출될 것으로 전망했다. 현재 서울시에는 공공기관, 학교 등에 태양광, 태양열 등 신재생에너지 시설이 총 297개(2009년 기준, 가정집 제외) 기관에 설치되어 있다. 이는 연간 약 522만9812kg의 온실가스를 저감한 것으로 어린 소나무로 환산하면 약 188만2732 그루를 심는 환경효과가 있다. 본지는 서울시 녹색서울 시민위원회와 에너지나눔과 평화에서 지난 2007년부터 조사한 자료를 바탕으로 정부의 신재생에너지 정책 및 서울시 신재생에너지 설치 현황에 대해 소개한다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.11a
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• pp.362-363
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• 2003

지구 온난화가 심화되면서 국제적으로 기후변화 협약에서는 한층 강제력 있는 온실기체의 감축목표를 권고하고 있다. 지난 1998년에 교토 기후협약에 가입한 우리나라도 실질적인 감축목표를 결정해야 하고 능동적으로 대처해야 하는바, 이를 소홀히 한다면 무역뿐만 아니라 산업활동에도 차질이 빚어질 것이다. 이를 위해 가장 기본적인 자료라 할 수 있는 온실기체($CO_2$, CH$_4$, $N_2$O, CFCs, PFCs)의 지속적이고도 체계적인 관측과 세계적으로 인정받을 수 있는 정확한 측정값의 제시가 필수적이다. (중략)

• Journal of Korean Society of Environmental Engineers
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• v.30 no.9
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• pp.961-972
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• 2008

In 2004, total emissions of Greenhouse Gases(GHGs) in Korea was estimated to be about 590 million metric tons, which is the world's 10th largest emissions. Considering the much amount of nation's GHG emissions and growing nation's position in the world, GHG emissions in Korea should be reduced in near future. The CO$_2$ emissions from two sub-sections of energy sector in Korea, such as thermal power plant and industry section(including manufacturing and construction industries), was about 300 million metric tons in 2004 and this is 53.3% of total GHG emissions in Korea. So, the mitigation of CO$_2$ emissions in these two section is more important and more effective to reduce the nation's total GHGs than any other fields. In addition, these two section have high potential to qualitatively and effectively apply the CCS(Carbon Capture and Storage) technologies due to the nature of their process. There are several CCS technologies applied to these two section. In short term, the chemical absorption technology using amine as a absorbent could be the most effectively used. In middle or long term, pre-combustion technology equipped with ATR(Autothermal reforming), or MSR-$H_2$(Methane steam reformer with hydrogen separation membrane reactor) unit and oxyfuel combustion such as SOFC+GT(Solid oxide fuel cell-Gas turbine) process would be the promising technologies to reduce the CO$_2$ emissions in two areas. It is expected that these advanced CCS technologies can reduce the CO$_2$ avoidance cost to $US 8.5-43.5/tCO$_2$. Using the CCS technologies, if the CO$_2$ emissions from two sub-sections of energy sector could be reduced to even 10% of total emissions, the amount of 30 million metric tons of CO$_2$ could be mitigated.

• Journal of Korea Planning Association
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• v.53 no.6
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• pp.87-99
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• 2018

The purpose of this study is to analyze the impact of municipal sustainability policy efforts on citywide $CO_2$ emissions. 25 cities in the U.S.A., which offer data on $CO_2$ emissions and are included in the top 50 largest cities in the U.S.A. according to its estimated population, were selected as study cities. This study utilizes the Sustainable Cities Seriously Index of Portney and selects data for the index at the city level. For analysis, this study employs correlation analysis, and OLS regression analysis. The results show that each city has around 30 sustainability policies and emits $12.76tCO_2$ per year on average. In addition, when the number of sustainability policies increases by one, the amount of $CO_2$ per capita decreases by $0.7tCO_2$. This means that the more cities employ sustainability policies, the less $CO_2$ those cities emit. The results of this study support the idea that active efforts on behalf of municipal governments toward the development of sustainability policies are needed to handle citywide $CO_2$ emissions.

• Journal of Energy Engineering
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• v.13 no.3
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• pp.219-227
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• 2004

World have been encouraged to develop technologies that contribute to CO$_2$ emission reduction for many years. Those technologies can be categorized into capture, storage or sequestration, utilization, etc. There have been lots of efforts, in Korea, to develop the technology as well. In this paper, the impact factors of the technologies, especially in CDRS (Carbon Dioxide Reduction & Sequestration Center), were selected and were weighed by SMM (Storing Models Method) and AHP (Analytic Hierarchy Process) in order to evaluate the four representative areas of the technologies.

• Journal of Climate Change Research
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• v.3 no.2
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• pp.117-128
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• 2012

The Government of South Korea has continued its effort to fixate virtuous circle of economic growth and climate change response to cope with international demands and pressure to commitment for greenhouse gas reduction effectively. Nationally, Korean Government has established "Enforcement of the Framework Act on Low carbon, Green Growth"(2010. 4. 13) to implement national mid-term GHG mitigation goal(30% reduction by 2020 compare to BAU), which established the foundation for phased GHG mitigation by setting up the sectoral and industrial goal, adopting GHG and Energy Target Management System. Also, follow-up measures are taken such as planning and control of mid-term and short-term mitigation target by detailed analysis of potential mitigation of sector and industry, building up the infrastructure for periodic and systematic analysis of target management. Likewise, it is required to establish more accurate, reliable and detailed sectoral GHG inventory for successfully establishment and implement the frame act. In comparison to the $CO_2$ emission, Especially fluorinated greenhouse gases (HFCs, PFCs, $SF_6$) are lacking research to build the greenhouse gas inventories to identify emissions sources and collection of the applicable collection activities data. In this study, with the refrigeration and air conditioning sector being used to fluorine refrigerant(HFCs) as the center, greenhouse gas emission estimation methodology for evaluating the feasibility of using this methodology look over and mobile air conditioning, fixed air conditioning, household refrigeration equipment, commercial refrigeration equipment for the greenhouse gas emissions were calculated. First look at in terms of methodology, refrigeration and air conditioning sector GHG emissions in developing country-specific emission factors and activity data of the industrial sector the construction of the DB is not enough, it's 2006 IPCC Guidelines Tier 2a (emission factor approach) rather than the Tier 2b (mass balance approach) deems appropriate, and each detail by process, sectoral activity data more accurate, if DB is built Tier 2a (emission factor approach) can be applied will also be judged. Refrigeration and air conditioning sector in 2009 due to the use of refrigerant greenhouse gas emissions ($CO_2eq.$) assessment results, portable air conditioner 1,974,646 ton to year, fixed-mount air conditioner 1,011,754 ton to year, household refrigeration unit 4,396 ton to year, commercial refrigeration equipment 1,263 ton to year was estimated to total 2,992,037 tons.