• 한국유기농업학회지
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• 제21권2호
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• pp.189-205
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• 2013

Climate change is rapidly getting worse. In Korea, the average temperature has increased by $1.5^{\circ}C$ over the last 100 years. In terms of global warming, it causes regional climate change, extreme weather phenomena and change of cultivated area. moreover, Global Warming brings both direct and indirect damage to agricultural cultivation. Global warming was accelerated by the greenhouse gas emissions which is by industry. In addition, Greenhouse gas emissions are increasing. In agriculture Thus we need to figure out how to analyze and to reduce greenhouse gas emissions and its cause. This study assumes that it is the introduction of the bio-energy using compost to facility house and it analyzes that there is the difference between in the future in utilizing compost due to the introduction of bio-energy facility houses; Environmental effect and Environmental effect which are generally used. This research is a previous step for resource-circulating, farming, utilizing a variety of by-products of the agricultural sector as an environmental assessment studies for the future completion of resource-circulating agriculture.

• 자원ㆍ환경경제연구
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• 제9권5호
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• pp.853-876
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• 2000

The purpose of this paper is to come up with the measures for sustainable development of the agricultural sector in store for the strengthened U.N. Framework Convention on Climate Change. We analyze the spillover effects of Methane and Nitrous Oxides taxes (carbon tax) on the Korean agricultural sector. Unlike the other sectors, the agricultural sector has a unique characteristic generating greenhouse gas in the process of production itself even without consuming much fossil fuel. In order to estimate the impacts of those taxes, non-linear optimization method has been used with various assumed scenarios. The production effect, income and' price effect, and greenhouse gas emission reduction effect in the agricultural sector have been estimated through this method. The empirical results show that the paddy sector has a bigger tax effect than the livestock sector. In the paddy sector, the carbon tax has more impacts in the suburban areas than in the rural areas, while the swine farming section in the livestock sector has a conspicuous income effect in the midst of low greenhouse gas emission effect. These results allude us to apply graded tax rates to the crop, the livestock, and the region of different kind. Even if the agricultural sector has a less tax effect when compared with other industrial sectors, an environmental tax might be an effective measure to prevent global warming.

• 한국대기환경학회지
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• 제20권3호
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• pp.303-315
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• 2004

The change of land use such as the construction of way in mountainous area and tunnel leads to the quantitative change of the greenhouse gas. This study tried to clarify the effect of the change of land use around Miryang Ice Valley on thermal environment of micro-meteorological scale by numerical experiment. We carried out several numerical experiment under different atmospheric conditions with different amount of greenhouse gases. Heating rate increased by the greenhouse gas in the ground level is average of 0.0073 K/day. And the increasing rate if smaller than the daily average heat crossing quantity.

• 한국과학교육학회지
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• 제23권5호
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• pp.592-598
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• 2003

이 연구는 제 7차 교육과정의 10학년 과학 교과서의 내용 중 온실효과 개념에 대한 본문진술과 제시된 그림, 도표 및 실험들을 오개념과 관련하여 분석하고 문제점을 지적하여 그 개선방안을 모색하였다. 그 결과 학습자에게 온실효과에 대한 오개념을 유발하거나 재 강화 할 가능성이 있는 개념설명, 그림, 도표 및 실험들이 발견되었다. 이들은 온실효과의 주 역할 기체, 온실효과의 변화에서 이산화탄소의 역할, 지구온난화, 그리고 온실효과의 에너지원, 실험, 물리적 과정과 관련된 것들이다. 이들 개념성명이나 그림, 도표 그리고 실험을 대체할 개선방안들을 제사하였다.

• 연구논문집
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• 통권30호
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• pp.33-42
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• 2000

We must stabilize quickly increasing waste matters in urban life and livestock industry. Biogas including landfill gas and digester gas is byproduct of anaerobic decomposition of organic waste matter and contains 40%-70% methane, which can be used for energy purposes. Utilization of biogas reduce the emission of methane into the atmosphere to minimize greenhouse effect and the carbon dioxide (CO2) emitted when biogas is converted to energy has been taken out of the atmosphere by growing plant. Recently, bioenergy is world-widely noticeable as all contributing to the greenhouse effect. This paper presents development process of a biogas engine for cogeneration system and results of application to digester gas and landfill gas in site. The biogas engine is a dual fuel engine operated on biogas with a diesel pilot. At present, the engine can substitute biogas for diesel fuel up to 85%. but it can be said that there is a possibility of improvement in performance.

• Korean Chemical Engineering Research
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• 제57권4호
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• pp.492-500
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• 2019

본 연구에서는 $9.2MW_e$의 상용규모 순환유동층 보일러에서 화학첨가제 사용에 따른 미세입자 저감에 대한 영향을 확인하였다. 또한 화력 발전소에서 화석연료의 연소 중 발생하는 미세입자를 포집하기 위하여 간단하고 효과적인 포집설비를 개발하였다. 연소 배가스 중 PM 10이하의 입자를 감소시키기 위하여 화학첨가제를 사용하였으며, 사용한 화학첨가제는 borax solution을 사용하였다. 포집된 미세입자 중 PM 10이하의 입자 거동을 확인하기 위하여 입도분석기와 SEM 분석을 통해 확인하였다. Borax solution은 배가스중에 용융된 미네랄을 흡수하여 미세입자를 성장시키는 경향이 있는 것을 알 수 있었다. 결과적으로 borax solution을 사용함으로써 $10{\mu}m$ 이하의 미세입자가 감소되었음을 확인할 수 있었다.

• 한국환경과학회지
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• 제21권2호
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• pp.165-179
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• 2012

Indirect $CO_2$ effect due to non-methane volatile organic compound (NMVOC) emissions from solvent and product use and fugitive NMVOC emissions from fuels in the Republic of Korea and 13 Annex I countries under United Nations Framework on Climate Change were estimated and the proportions of them to total greenhouse gas (GHG) emissions ranged from 0.092% to 0.45% in 2006. Indirect greenhouse effect ($CO_2$, $CH_4$, and $O_3$) were estimated at 13 photochemical assessment monitoring sites in the Republic of Korea using concentrations of 8 NMVOCs of which indirect global warming potential (GWP) were available. The contribution of toluene to mixing ratio was highest at 11 sites and however, the contribution of toluene to indirect greenhouse effect was highest at nine sites. In contrast to toluene, the contributions of ethane, butane, and ethylene were enhanced. The indirect greenhouse effects of ethane and propane, of which ozone formation potentials are the lowest and the third lowest respectively among targeted 10 NMVOCs, ranked first and fourth highest respectively. Acetaldehyde has relatively higher maximum incremental reactivity and is classified as probable human carcinogen however, its indirect GWP ranked second lowest.

• 에너지공학
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• 제19권4호
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• pp.203-214
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• 2010

본 논문은 한국의 원자력발전소 가동에 따른 온실가스 저감 기여도와 국민경제적 효과를 평가하였다. 한국의 2009년 원자력 발전량과 국가에너지기본계획에 의거한 추정 발전량에 온실가스 배출계수를 적용한 결과, 원자력발전이 온실가스 배출량의 저감과 전기요금의 인상억제, 화석연료의 수입대체 등에 긍정적으로 기여하고 있는 것으로 분석되었다. 향후 국가에너지의 안정적 경제적 조달과 기후변화에 대응하기 위하여 원자력발전의 비중이 확대될 필요가 있는 것으로 보인다.

• 한국융합학회논문지
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• 제11권8호
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• pp.173-182
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• 2020

정부는 신재생에너지 보급을 확대하는 RPS제도를 지속해서 개선하지만, 온실가스 저감효과 증대를 위해 환경적인 측면을 더 고려해야 한다는 비판이 있다. 공급인증서 가중치는 신재생 에너지원별로 차등화되어 있다. 공급인증서 가중치 결정 요소의 하나인 온실가스 저감효과 항목 값은 전문가의 의견을 반영하여 결정된다. 이번 연구는 온실가스 배출량을 정확하게 반영하기 위해 전과정 평가를 고려하였다. 전과정 평가는 연료 생산, 수송부터 발전소 건설, 운영, 폐지까지의 전과정에서 발생 되는 온실가스를 정확하게 산출하는 것이다. 이번 연구는 온실가스 저감효과를 기존 정성적 방법에서 정량적 방법으로 변경하는 방안을 제안하고 평가한다. 그 결과, 평가 점수는 바뀌는데, 점수를 등급화하는 구간이 커서 REC 가중치에는 영향을 주지 않는다. 따라서 온실가스 저감효과를 공급인증서 가중치에 직접 반영하는 방안을 제시하였다.

• Advances in environmental research
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• 제2권4호
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• pp.279-290
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• 2013

In this study, a comprehensive model developed to estimate greenhouse gas (GHG) emissions from urban area with low impact development (LID) and its integrated management practices (IMPs). The model was applied to the actual urban area in Asan Tangjeong district (ATD) as a case study. A rainwater tank (1200 ton) among various LID IMPs generated the highest amount of GHG emissions ($3.77{\times}10^5kgCO_2eq$) and led to the utmost reducing effect ($1.49{\times}10^3kgCO_2eq/year$). In the urban area with LID IMPs, annually $1.95{\times}104kgCO_2eq$ of avoided GHG emissions were generated by a reducing effect (e.g., tap water substitution and vegetation $CO_2$ absorption) for a payback period of 162 years. A sensitivity analysis was carried out to quantitatively evaluate the significance of the factors on the overall GHG emissions in ATD, and suggested to plant alternative vegetation on LID IMPs.