• 한국컴퓨터정보학회논문지
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• 제27권1호
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• pp.141-148
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• 2022

온실가스로 인한 세계 기후 변화가 심각해지고 있다. 이를 방지하기 위해 세계 각국에서는 온실가스 배출 규제를 하고 있다. 국내는 온실가스 배출량을 2030년까지 BAU(Business As Usual) 대비 37% 감축하기로 하였다. 국내 온실가스 배출 비중 중 교통부문이 18.58%에 해당하는 데 그중 도로가 93.75%에 해당하는 대부분의 수치를 기록했다. 대중교통 또한 온실가스 감축 대상에 포함되는데 본 연구는 도로 교통 중 비용이 상대적으로 적게 들면서 온실가스 감량을 할 수 있는 버스 대중교통의 온실가스 감축을 위해 진행했다. 본 연구는 애니 로직을 활용하여 온실가스 시뮬레이션 모델을 구현해 버스의 배차 간격을 조정하여 승객의 대기시간 대비 최적의 온실가스 배출량을 예측하는 시뮬레이션을 진행했다. 향후 더욱 정밀한 모델을 구현한다면 버스 온실가스 감축에 활용될 것으로 기대한다.

• 한국환경과학회지
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• 제23권12호
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• pp.2035-2044
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• 2014

Taking sample processes from the combined heat and power plant in Busan Fashion Color Industry Complex, the characteristics and amounts of greenhouse gas (GHGs) emissions were analysed and calculated, respectively. Based on the results, environmental assessment was evaluated for recent 3 years. The amounts of GHG emissions from 2011 to 2013 were estimated at 182,750, 184,384 and 190,250 $Ton.CO_2eq/year$, respectively. GHG emissions from stationary combustion sources were found to be more than 99 % of the total emissions. Also, the overall eco-efficiency indicator for environmental assessment was more than 1, suggesting that these results would be beneficial for GHG emissions allowance allocations.

• 한국환경과학회지
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• 제29권7호
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• pp.729-737
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• 2020

This study estimates the greenhouse gas (GHG) emissions reduction resulting from photovoltaic and wind power technologies using a bottom-up approach for an indirect emission source (scope 2) in South Korea. To estimate GHG reductions from photovoltaic and wind power activities under standard operating conditions, methodologies are derived from the 2006 IPCC guidelines for national GHG inventories and the guidelines for local government greenhouse inventories of Korea published in 2016. Indirect emission factors for electricity are obtained from the 2011 Korea Power Exchange. The total annual GHG reduction from photovoltaic power (23,000 tons CO_2eq) and wind power (30,000 tons CO_2eq) was estimated to be 53,000 tons CO_2eq. The estimation of individual GHGs showed that the largest component is carbon dioxide, accounting for up to 99% of the total GHG. The results of estimation from photovoltaic and wind power were 63.60% and 80.22% of installed capacity, respectively. The annual average GHG reductions from photovoltaic and wind power per year per unit installed capacity (MW) were estimated as 549 tons CO_2eq/yr·MW and 647 tons CO_2eq/yr·MW, respectively. Finally, the results showed that the level of GHG reduction per year per installed capacity of photovoltaic and wind power is 62% and 42% compared to the CDM project, respectively.

• 한국초지조사료학회지
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• 제35권3호
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• pp.251-256
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• 2015

The study was conducted to determine greenhouse gas (GHG) inventories in grasslands. After 'Low Carbon Green Growth' was declared a national vision on 2008, Medium-term greenhouse gas reduction was anticipated for 30% reduction compared to Business As Usual (BAU) by 2020. To achieve the reduction targets and prepare to enforce emissions trading (2015), national GHG inventories were measured based on the 1996 Intergovernmental Panel on Climate Change Guidelines (IPCC GL). The national Inventory Report (NIR) of Korea is published every year. Grassland sector measurement was officially added in 2014. GHG removal of grassland soil was measured from 1990 to 2012. Grassland area data of Korea was used for farmland area data in the "Cadastral Statistical Annual Report (1976~2012)". Annual grassland area corresponding to the soil classification was used "Soil classification and commentary in Korea (2011)". Grassland area was divided into 'Grassland remaining Grassland' and 'Land converted to Grassland'. The accumulated variation coefficient was assumed to be the same without time series changes in grassland remaining grassland. Therefore, GHG removal of soil carbon was calculated as zero (0) in grassland remaining grassland. Since the grassland area increases constantly, the grassland soil sinks constantly . However, the land converted to grassland area continued to decrease and GHG removal of soil carbon was reduced. In 2012 (127.35Gg $CO_2$), this removal decreased by 76% compared to 1990 (535.71 Gg $CO_2$). GHG sinks are only grasslands and woodlands. The GHG removaled in grasslands was very small, accounting for 0.2% of the total. However, the study provides value by identifying grasslands as GHG sinks along with forests.

• 자원ㆍ환경경제연구
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• 제30권2호
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• pp.169-205
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• 2021

본 연구는 온실가스 감축정책이 세계경제에 미치는 영향을 정량적으로 분석하였다. 이를 위해서 생산에 따른 온실가스 배출, 온실가스 배출에 의한 비효용의 발생, 각국 정부의 온실가스 감축정책이라는 세 가지 요소를 포함하고 있는 다국가-다산업 정태적 연산가능일반균형모형을 개발하였다. 이렇게 개발된 모형의 파라미터 값을 추정하고 모형에 적용할 수 있는 가장 최근의 방법론(exact hat algebra)을 사용해서 모형의 해를 계산하였다. 모형의 예측에 따르면 국가별 개별적인(unilateral) 온실가스 감축정책의 강화는 해당 국가의 국내 생산과 탄소 배출을 감소시키지만, 생산이 다른 국가로 재배치되기 때문에 반드시 세계의 탄소 배출량을 감소시키지는 않는 것으로 나타났다. 반면 모든 주요국들이 동시에 OECD(2016)에서 제안된 강화된 감축정책을 추진할 경우에 전 세계의 온실가스 배출을 감소시킬 수 있는 것으로 나타났다. 우리분석결과는 온실가스 감축정책이 효과를 발휘하기 위해서는 주요국들의 조율된(aligned) 감축노력이 필요하다는 점을 시사한다.

• Environmental Engineering Research
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• 제25권4호
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• pp.462-469
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• 2020

This study is proposing a System Dynamics Model for estimating Greenhouse Gas (GHG) emission from treating Municipal Solid Waste (MSW) in South Korea for years 2000 to 2030. The government of country decided to decrease the total GHG emission from waste sector in 2030 as per Business-as-usual level. In context, four scenarios are generated to predict GHG emission from treating the MSW with three processes i.e., landfill, incineration and recycling. For prior step, MSW generation rate is projected for present and future case using population and waste generation per capita data. It is found that population and total MSW are directly correlated. The total population will increase to 56.27 million and total MSW will be 21.59 million tons in 2030. The methods for estimating GHG emission from landfill, incineration and recycling are adopted from IPCC, 2006 guidelines. The study indicates that Scenario 2 is best to adopt for decreasing the total GHG emission in future where recycling waste is increased to 75% and landfill waste is decreased to 7.6%. Lastly, it is concluded that choosing proper method for treating the MSW in country can result into savings of GHG emission.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.932-935
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• 2008

Transportations are representative sources of greenhouse gas (GHG) emission. Advanced countries (especially, EU and Japan etc.) have performed several efforts to decrease GHG released from railroad. In this study, we investigated the reduction methods of GHG in railroad industry. The GHG emissions in railroad are mainly caused by the energy consumption during operation. Therefore, it is necessary to develop technologies for the increase of energy efficiency and the application of clean energy such as solar and wind energy instead of diesel. From these studies, we can establish various strategies to reduce GHG efficiently in Korean railroad.

• 한국수자원학회논문집
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• 제55권10호
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• pp.785-799
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• 2022

본 연구의 목적은 대청댐 저수지(금강수계)를 대상으로 G-res Tool을 적용하여 배출 경로별 온실가스(Greenhouse Gas, GHG)의 배출 특성과 댐 건설에 따른 담수 전과 후의 GHG 순 배출량(온실가스 발자국)을 산정하는데 있다. 아울러, 단위전력 생산당 탄소배출량(GHG 배출강도)을 평가하고 저수지 부영양화 상태(총인 농도)에 따른 GHG 배출량 변화의 민감도를 분석하여 수질과 배출량의 관계를 해석하였다. 대청댐 건설 후 연간 GHG 배출 플럭스는 262 gCO₂eq/m²/yr이었으며, CO₂와 CH₄의 비율은 각각 45.7%와 54.2%이었다. 배출 경로별로는 CO₂ 확산이 가장 많았으며 다음으로 CH₄의 확산, 방류 시 탈기, 기포 배출 순으로 산정되었다. 댐 건설 전과 후의 GHG 순 배출량은 담수 전 산림지로 분류된 토지 피복이 담수 후 저수구역으로 변경됨으로써 탄소 흡수효과가 상실되어 510 gCO₂eq/m²/yr로 증가하였다. 대청댐의 GHG 배출강도는 전력밀도(저수면적당 발전용량)가 낮아 전세계 수력발전 중앙값보다 약 3.7배 많은 86.8 gCO₂eq/kWh로 산정되었다. 그러나 이 값은 화석연료인 석탄의 배출강도보다 9.5배 작은 값에 해당한다는 점은 주목할 만하다. 또한 저수지의 총인 농도가 감소함에 따라 GHG 배출량도 감소하는 것을 확인하였다. 연구 결과는 댐 저수지의 온실가스 배출 특성에 대한 이해를 높이고, 국가 온실가스 인벤토리의 불확실성을 개선하는데 활용될 수 있다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 추계 학술논문 발표대회
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• pp.135-136
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• 2012

The purpose of this study is to analysis of counter strategy of greenhouse gas·energy target management system for the construction firm. For this purpose, the greenhouse gas·energy target management system of other industries was investigated. The selection possibility that is construction firm to be managed company was analyzed. In addition, status of counter strategy on the greenhouse gas·energy target management system were investigated and analyzed about 5 domestic major construction firm via questionnaire and interview. As a result, the counter strategy by organization and annual for the greenhouse gas·energy target management system was drawn.

• KIEAE Journal
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• 제10권5호
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• pp.139-150
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• 2010

Until now, the eco-friendly construction (green construction) has been focused on reducing environmental impacts in use(operation and maintenance) phase. Considering the environmental influence along the life cycle of construction project, the impact in execution phase is rather lower than that in use phase. However, that impact is thought to be greatly decreased by well-organized activities. Based on its urgency and requirement for timely action, this study aimed to discuss the greenhouse gas (GHG) reduction plan in execution phase from a broad perspective. To achieve this purpose, the green building rating systems in domestic and foreign countries have been reviewed, and the practice in Japan was investigated. In order to improve current on-site greenhouse gas management, the integration among construction phases, participants, and environmental factors, and institutional supports are required as well as the contractor's efforts.