• 에너지공학
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• 제18권3호
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• pp.191-202
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• 2009

2005년 2월 교토의정서가 효력을 발휘하게 됨에 따라 우리나라는 세계 10위의 이산화탄소 배출국으로서 2013년 이후에는 감축의무를 지어야 할 실정이다. 특히 온실가스 배출량의 약 30%가 발전부문에 의한 것이므로 전환부문의 에너지 소비 저감은 매우 중요하다. 이에 정부는 온실가스 감축환경에 대응하기 위하여 "제1차 국가에너지기본계획"을 발표하여 원전설비를 2030년까지 최대 41%까지 확대하고, 신재생에너지보급률 또한 11%로 높이겠다는 목표를 내세웠다. 이에 근거하여 원자력과 신재생에너지발전설비를 확대하였을 경우 온실가스 저감 잠재량과 그 유효성을 LEAP(Long-range Energy Alternative Planing system)을 이용하여 정량적으로 분석하였다. 분석결과 2030년 기준으로 총 $CO_2$ 발생 저감률은 28.8% 였다. 또한 BAU 시나리오 발전량을 토대로 하였을 때 유연탄발전 $0.85\;kgCO_2/kWh$, LNG발전 $0.51\;kgCO_2/kWh$의 단위 발전량당 온실가스 배출량을 보였다. 따라서 기존설비를 대체할 시, 유연탄발전을 대체할 경우에 온실가스 저감 효과가 크다는 결론을 보였다.

• 한국기후변화학회지
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• 제7권4호
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• pp.383-390
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• 2016

농업 분야는 경종부문과 축산부문으로 나누어지는데, 축산 부문 온실가스 배출원은 장내발효 부문($CH_4$)과 가축분뇨처리 부문($CH_4$ 및 $N_2O$)으로 다시 나누어진다. 본 연구는 1990부터 2013년까지의 축산부문 온실가스 배출량을 1996 IPCC Tier 1 방법을 이용하여 산정하고, 배출량 증감의 원인을 분석하였다. 2013년 축산부문 온실가스 배출량은 9.9백만 톤 $CO_2-eq$로써 국가 전체 온실가스 배출량의 1.4%를 차지하였고, 농업분야 전체 배출량의 47.6%를 차지하였다. 장내발효 부문 배출량은 4.4백만 톤 $CO_2-eq.$로써 소에서의 배출량이 전체 장내발효 배출량의 91.7%(젖소 23.9%, 한 육우 67.8%)를 차지하였다. 가축분뇨처리 부문 배출량은 5.5백만 톤 $CO_2-eq.$로써 한 육우에서 배출량은 전체 가축분뇨처리 부문 배출량의 36.6%로 가장 많이 차지하였고, 다음으로 돼지(29.4%), 가금류(19.1%), 젖소(12.5%)에서 배출량이 많았다. 즉, 한 육우, 돼지, 닭이 축산부문 온실가스 배출량 변화에 주로 영향을 미치는 배출원인 것으로 분석되었는데, 이는 해당 축산물의 소비량이 증가함에 따라 가축 사육두수 또한 지속적으로 증가 했기 때문이라고 할 수 있다. 축산부문 온실가스 배출량의 정확도를 높이기 위해서는 현재 사용하고 있는 IPCC 기본 배출계수 대신 국가고유 배출계수를 개발하여 배출량 값의 신뢰도를 높이는 것이 중요하다. 따라서 국가고유 배출계수 산정 고도화에 필요한 원시자료 확보를 위한 연구를 지속적으로 수행해야 할 것이다.

• 자원ㆍ환경경제연구
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• 제10권4호
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• pp.547-567
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• 2001

This paper analyzed what kind of institutional scheme for domestic policy instruments to reduce GHG emissions are desirable for Korea in complying with the international efforts to mitigate climate change, by focusing on independent abatement(equivalent to the imposition of carbon tax) and domestic emission trading. It also examined the economic and environmental implications of recycling the government revenue created from implementation of those policies. By utilizing a dynamic CGE model, this study shows that the economic cost under independent abatement is projected to be higher than that under emission trading. It is because under independent abatement scheme each emitter in economy must meet its emission target regardless of the abatement cost. On the other hand, emission trading allows emitters to reduce the marginal cost of abatement through trading of emission permits. In designing future domestic policies and measure to address the climate change problem in Korea, therefore, this study proposes the introduction of domestic emission trading scheme as the main domestic policy instrument for GHG emission abatement. In terms of double dividend, in addition, this study shows that both independent abatement and emission trading schemes under various assumption on the revenue recycling may not generate the double dividend in Korea.

• 한국기후변화학회지
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• 제5권3호
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• pp.267-275
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• 2014

A key driver for climate change caused by global average temperature rise is greenhouse gas cumulative emissions that stay for long term in the atmosphere. Although at the moment there is no GHG emission, global warming will continue owing to GHG cumulative emission. In this study, scenarios are developed based on two types of optimistic and conservative diffusion goal. There were a total of 6 alternatives scenarios. The objective of this study are to compare scenarios in terms of GHG cumulative emissions and alternative fuels. An object of analysis is the residential buildings and time frame of scenarios is set up by 2030. And this study uses the LEAP model that is a bottom-up energy model. In conclusion, It is important to set specific diffusion pathway for mitigating climate change virtually.

• Architectural research
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• 제15권3호
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• pp.143-150
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• 2013

The Korean government recently has rediscovered the potential value of Han-Ok, the Korean traditional house, as an eco-friendly building. In order to objectively verify the environmental performance of Han-Ok as a low carbon green building, this paper suggests the analysis method of GHG emission load of Korean traditional house, based on Life Cycle Assessment, which is commonly abbreviated to "LCA". The environmental impacts caused by building construction and operation can be analyzed through the sum of input and output data from every phase. The study particularly describes the GHG reduction effect by using traditional building materials such as wood products, traditional clay roof tiles, and mud, which are mainly used to construct Han-Ok. Also the study proposes the method for comparative analysis of quantity of GHG emissions in building's entire life cycle so that the data can be used as a reliable basis to optimize the environmental performance of building.

• 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.

• 에너지공학
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• 제27권3호
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• pp.36-40
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• 2018

Climate change is one of the major issues in both the developed and developing world. Greenhouse gas (GHG) emission is one of the implications for climate change. It is increasing rapidly. Although the emission is much less when compared to the rest of the world, Ethiopia has also faced this global issue. The major source for GHG emission in Ethiopia is agriculture. Therefore, the agriculture sector has to be given more attention in Ethiopia. To overcome the problem, Climate-Resilient Green Economy (CRGE) strategy has been initiated. One way of executing this target is to create a sustainable and environmentally friendly pathway to use agricultural byproducts. Sugarcane is one of the major plants in Ethiopia. Its byproducts are bagasse, molasses, and press mud. Since it is a waste product, it is economical and creates a sustainable and green environment by reducing GHG emissions. Sugarcane byproducts have versatile applications like as fuel, as cement replacing material, as a mitigation for expansive soils, as biosorbent for the treatment of water and wastewater and also as a wood material. However, Ethiopia has not used this byproduct massively as it is readily available. This paper reviews the possible applications of sugarcane byproducts to mitigate climate change.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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• pp.420-421
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• 2006

The cost-effective reduction of greenhouse gas(GHG) emission to avert the most severe impacts of climate change remains one of the widely accepted priorities for global action. In order to facilitate cost-effective abatement strategies, the Kyoto Protocol introduced three mechanisms, or flexible instruments, the Emissions Trading(ET), the Joint Implementation(JI) and the Clean Development Mechanism(CDM). The CDM enables Annex I countries to the Kyoto Protocol to partially meet cost-effectively their emission reduction commitments by undertaking GHG mitigation Projects in developing countries, which do not have any GHG abatement obligations and where the emission reductions are cheaper. One of the major barriers hampering the wide spread implementation of CDM is the high transaction costs associated with the initial identification of promising CDM projects. This paper presents development of a pre-validation program of CDM. The developed program may provide a useful aid to potential investors and project developers as a supportive pre-evaluation tool, and may become an effective tool for the promotion of renewable energy and fuel switching projects.

• 농촌계획
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• 제23권2호
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• pp.75-86
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• 2017

IPCC Guidelines have been updated after the first official announcement to get more precise estimation of GHG emissions. The goal of this study is to evaluate the implications of the IPCC Guidelines improvements including equations of country-specific parameter values for estimating GHG emissions for rice cultivation on the agricultural sector. In addition, we analyze the effects of emission factors associated with organic amendment applications. The results of this study are as follows; (1) the total GHG emissions of rice cultivation based on 1996 IPCC GL are 28% lower than those estimated by 2006 IPCC GL with the same year data; (2) GHGs can be reduced up to 60% through the assumption of organic fertilizer applications; (3) Jeonnam and Chungnam are the worst regions for GHG emissions on rice cultivation and Chungbuk shows the highest reduction rate of GHG emissions, about 40%.

• 상하수도학회지
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• 제24권3호
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• pp.319-332
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• 2010

In general, wastewater treatment systems consume high-energy consumption depending on operation characteristics of the facilities. Therefore, greenhouse gas(GHG) reduction activities that are application of digestion gas, induction of renewable energy etc. are conducted to reduce energy consumption and to increase energy independence ratio. In this study, GHG reduction in wastewater treatment system identified, searched application of Clean Development mechanism(CDM) approved methodology. If the methodologies apply to GHG reduction activities such as application of digestion gas, heat pump system using the wastewater as heat source, hydropower using the methodology determined CDM applicability, otherwise through several assumptions calculated expectable GHG reduction emissions and determined CDM applicability. As a result, the order of calculated GHG reduction emission showed that collected and energy generation of digestion gas is 66,775 $tCO_2$/yr, gas engine cogeneration system is 8,182 $tCO_2$/yr, heat pump system using the wastewater as a heat source is 72,715 $tCO_2$/yr, and hydropower is 561 $tCO_2$/yr. Consequently, the order of calculated Certified Emission Reductions(CERs) benefit showed that heat pump system using the wastewater, as a heat source is 1,381 million won/yr was estimated as the highest, followed by a collected and energy generation of digestion gas is 1,268 million won/yr.