• 아태비즈니스연구
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• 제12권1호
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• pp.209-223
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• 2021

Purpose - The purpose of this study was to investigate the relationship between Korea agricultural productions and Greenhouse Gas (GHG) emissions based on Environmental Kuznets Curve (EKC) hypothesis. Design/methodology/approach - This study utilized time series data of economic growth, greenhouse gas, agricultural productions, trade dependency, and energy usages. In order to econometric procedure of EKC hypothesis, this study utilized unit root test and cointegration test to check staionarity of each variable and also adopted Vector Error Correction Model (VECM) and Ordinary Least Square (OLS) to analyze the short and long run relationships. Findings - In the short run, greenhouse gas emissions resulting from economic growth show an inverse U-shape relationship, and an increase in agricultural production and energy consumption led to increase in greenhouse gas emission. In the long run, total GHG emissions and CO2 emissions show an N-shaped relationship with economic growth, and an increase in agricultural production has resulted in a decrease in total GHG and CO2 emissions. However, methane (CH4) and nitrous oxide (N2O) emissions showed an inverse U-shape relationship with economic growth, which indicated the environment and production process of agricultural production. Research implications or Originality - Korea agricultural production has different effects on the GHG emission sources, and in particular, methane (CH4) and nitrous oxide (N2O) emissions show to increase as the agricultural production expansions, so policy or technological development in related sector is required. Especially, in the context of the 2030 GHG reduction road-map, if GHG-related reduction technologies or policies are spread, national GHG emission reduction targets can be achieved and this is possible to predict the decline in production in the sector and damage to the related industries.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2005년도 춘계학술대회
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• pp.217-233
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• 2005

As the Kyoto Protocol will come into effect starting February 2005, 55 member countries of the Conference of Parties of the Framework Convention on Climate Change (FCCC) will be under obligation to reduce the emissions of Carbon Dioxide $(CO_2)$ by 5.2 Percent from the 1990 levels before the year 2012. Hence the development of technology to prepare for this has been accelerated in Korea. The effect of technology varies with market size of technology, and it is necessary to control technology development period, according to the size and trend of technology market. Moreover it is essential that market analysis be finished before technology development, because market on the $(CO_2)$ Reduction and Sequestration Technology expands internationally. For that reason, it is needed to analyze domestic market and to consider technology development strategy according to analysis results. In this paper, we analyzed the domestic industry and forecasted the market size, both related to the Reduction and Sequestration Technology on $(CO_2)$ emission, which is the major component of global Green House Gas(GHG).

• 대한교통학회지
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• 제29권2호
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• pp.25-35
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• 2011

도로물류부문의 온실가스 저감 및 물류체계를 효율화하기 위해서는 화물차의 운행효율화가 무엇보다 중요하다. 효율적인 수송체계의 구축은 화물차의 적재효율 향상, 수송수단의 전환 등을 통하여 온실가스 저감 및 수송비용을 절감할 수 있다. 또한, 물류부문의 환경부하량을 감축하기 위해서는 환경부하를 정량적으로 파악할 수 있어야 한다. 하지만, 국내 물류기업의 환경부하에 대한 체계적인 조사가 미비한 실정이다. 본 연구에서는 국내 물류부문의 화물환경지표로 화물수송실적(ton km) 당 $CO_2$ 배출량으로 설정하였다. 여기서, 화물수송실적(ton km) 당 $CO_2$ 배출량은 1 ton의 화물을 1 km 수송할 때 배출되는 $CO_2$ 양이다. 국내 물류기업을 대상으로 분석한 결과와 영국, 프랑스의 화물수송실적 당 CO2 배출량을 비교하면 국내 업체가 $363g-CO_2/ton{\cdot}km$로 영국 $130g-CO_2/ton{\cdot}km$에 비해 2.8배, 프랑스 $97g-CO_2/ton{\cdot}km$로 3.7배 높게 배출되는 것으로 나타났다. 이는 영국과 프랑스에 비해 국내 화물차의 공차 운행율이 높고, 적재 효율은 낮은 것이 주요 원인으로 판단된다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1198-1201
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• 2006

Carbon nanotubes (CNTs) have used as an electron field emitter of the field emission display (FED) due to their characteristics of high-electron emission, rapid response and low power consumption. However, to commercialize the FED with CNT emitter, some fundamental problems regarding life time and emission efficiency have to be solved. In this study, we investigated the metal coated CNT as a field emitter on which metal nanoparticles were coated by chemical modification. Metal nanoparticles, such as Ru, Pd, were synthesized by solution reduction method. The size of the metal nanoparticle has the range of 2 - 5 nm. Surface was modified chemically with the use of ionic surfactant which changed the surface charge of nanoparticles.

• 대한기계학회논문집B
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• 제29권6호
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• pp.730-736
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• 2005

It has been reported that the interacting multiple jet flames of propane fuel are not extinguished even at the choking velocity at the nozzle exit if eight small nozzles are arranged along the imaginary circle of $40{\sim}72$ times the diameter of single nozzle. In this research, experiments were conducted to know the NO and CO emission characteristics of the interacting flames. Measurements along the centerline of the flame revealed that decrease in CO concentration was followed by the NO decrease and $O_2$ increase. It was found that interacting flame emitted less NO than that of similar area single jet flame. Also, NO emission of partially premixed interacting flame was decreased up to $17\%$ of that of non-premixed multiple jet flame. Though the mechanism of the NO reduction was not clear from this experiment, it's been shown that partially premixed multiple jet flames could be used to achieve clean and highly stable combustion.

• 한국대기환경학회지
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• 제27권2호
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• pp.181-190
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• 2011

The air pollutants from vehicle exhaust gas are affected by many factors including fuel qualities, engine and vehicle technologies, driving patterns. In particular, fuel qualities and after-treatment devices could directly affect the emission level of pollutants. The pollutant reduction characteristics that caused by enforced fuel quality standard were analyzed. Three types of test fuel were selected in accordance with Korean automotive fuel standard in 2006, 2009, 2012 and used for vehicle emission test in chassis dynamometer. European COPERT correction equation of fuel impact was considered as reference information to quantify the vehicle emission test results. The contribution rates of exhaust emission by COPERT correction equation showed that aromatic compounds and oxygen contents in gasoline fuel was most important. In case of diesel fuel, cetane index and polycyclic aromatic compounds accounted for the greater part. The exhaust emission effects by COPERT correction equation revealed that CO and VOC was increased 0.86%, 1.57% respectively in after 2009 gasoline when compared to before 2009 gasoline fuel. In case of light-duty diesel vehicle CO, VOC and PM were decreased in range of 3~7%. The result from this study could be provided for developing future fuel standards and be used to fundamental information for Korean clean air act.

• 한국통신학회논문지
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• 제36권6B호
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• pp.642-649
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• 2011

본 논문은 다중 대역에서 동작하는 안테나를 장착한 차세대 이동통신 기지국 시스템의 도입 가능성 분석을 위해 종래의 기지국 시스템과 케이블 손실전력을 고려한 차세대 기지국 시스템의 전력 손실 및 탄소 절감효과를 분석하였다. 차세대 기지국 시스템은 옥외에 무선처리부를 설치하고, 옥내의 기저대역처리부는 광케이블로 연결하여 종래의 기지국에서 케이블로 인해 발생하는 전력손실을 없애는 구조이다. 본 연구 결과 종래의 기지국과 비교하여 동일한 서비스 커버리지 확보가 가능하고, 케이블 전력손실이 5 dB 줄어든 차세대 기지국 시스템을 도입할 경우 CDMA 20W, WCDMA 30W, WiBro 10W 기지국에서 소모하는 전력량은 연간 155,078 MWh에서 49,038 MWh로 감소시킬 수 있으며, 탄소배출량 또한 65,878 $tCO_2$에서 20,832 $tCO_2$로 절감됨을 확인하였다. 따라서 차세대 기지국 시스템은 그린 IT 기술로 이용 가능할 것으로 고찰되었다.

• 융복합기술연구소 논문집
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• 제4권1호
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• pp.15-20
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• 2014

Recently, the development of renewable energy sources in Korea has been needed due to climate change. One of powerful alternative energy resources to mitigate emission is to switch conventional fuels to renewable energy, such as bioenergy. In this study, current status of bioenergy conversion technology and its supply in Korea was investigate. Based on theoretical, technical and realizable potential of biomass in Korea, the amount of reduction of green house gases was estimated. The results shown that the contribution of biomass on 2020 reduction target of green house gases emission in power generation was $513,000\;tCO_2/yr$ and utilization ratio of technical potential of biomass was 6.4%. For the effective supply of bioenergy in Korea, more exact estimation of realizable potential of biomass in Korea and stable supply sources are needed.

• KEPCO Journal on Electric Power and Energy
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• 제2권2호
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• pp.143-165
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• 2016

COP21에서 채택된 파리협정에서 명시한 지구 대기온도 $2^{\circ}C$ 이하 상승억제 목표를 달성하기 위해서는 현재 각 당사국이 제출한 감축 목표치로만은 부족한 상황이다. 이에 따라 향후 감축목표를 상향하기 위한 작업이 이루어질 것이다. $CO_2$ 배출량을 줄이기 위한 여러 수단 중 이산화탄소 포집 및 저장(CCS: Carbon Capture and Storage)은 필수 옵션으로 현재 전세계에서 대규모 실증이 진행되고 있다. 실증 단계에 있는 1세대 기술의 경우 높은 포집비용 및 발전원가 상승으로 정책적 뒷받침 없이는 시장보급이 어려운 실정이다. 이에 비용을 저감하기 위한 2세대, 3세대 혁신 포집기술들이 개발되고 있으며 2세대 기술들은 파일럿 규모로, 3세대 기술들은 벤치규모로 연구되고 있다. 본 리뷰 논문에서는 전세계 대규모 CCS 실증 사업 현황을 살펴보고, 2세대, 3세대 포집기술에 대해 연소전, 연소후, 신연소기술로 구분하고 습식 포집기술, 건식 포집기술, 분리막 기술, 산소연소기술의 세부 기술개발 내용에 대한 현재까지의 기술개발 결과를 요약정리하였다.

• 에너지공학
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• 제18권4호
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• pp.230-238
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• 2009

우리나라는 에너지 절약 및 온실가스 배출저감 기술 중 하나로써 소형 열병합 발전과 소형 연료전지 열병합 발전을 연구해 왔으며 정책적으로 이를 보급하려고 한다. 기존의 석탄화력발전설비, 복합화력발전설비, 석유 화력발전설비를 열병합 발전설비로 대체하는 시나리오를 작성하여 에너지소비량과 온실가스 배출량의 변화추이를 에너지 경제 모델인 LEAP (Long-range Energy Alternative Planning system)을 이용하여 정량적으로 분석하였다. 2019년을 기준으로 열병합 발전설비를 석탄화력발전설비와 교체하였을 경우, 온실가스 배출량이 약 6.34%가 감소하였고 복합화력발전설비와 교체하였을 경우, 온실가스 배출량이 약 0.8%가 증가하였으나 열병합발전설비의 열생산량을 고려해주면 배출량이 감소하는 경향을 보일 것으로 사료된다. 석유화력발전설비를 열병합발전설비로 대체할 경우, 온실가스 배출량이 약 0.8% 감소할 것으로 예상된다.