• 한국기후변화학회지
• /
• 제8권3호
• /
• pp.213-220
• /
• 2017

The purpose of this study is to analyze effects of Greenhouse Gas (GHG) emission reduction in district energy business mainly based on Combined Heat and Power (CHP) plants. Firstly this paper compares the actual carbon intensity of power production between conventional power plants and district energy plants. To allocate the GHG from CHP plants, two of different methods which were Alternative Generation Method and Power Bonus Method, have been investigated. The carbon intensity of power production in district energy plants ($0.43tonCO_2e/MWh$) was relatively lower than conventional gas-fired power plants ($0.52tonCO_2e/MWh$). Secondly we assessed the cost effectiveness of reduction by district energy sector compared to the other means using TIMES model method. We find that GHG marginal abatement cost of 'expand CHP' scenario (-$134/ton$CO_2$) is even below than renewable energy scenario such as photovoltaic power generation ($87/ton$CO_2$). Finally the GHG emission reduction potential was reviewed on the projected GHG emission emitted when the same amount of energy produced in combination of conventional power plants and individual boilers as substitution of district energy. It showed there were 10.1~41.8% of GHG emission reduction potential in district energy compared to the combination of conventional power plants and individual boilers.

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

• 대한조선학회논문집
• /
• 제60권6호
• /
• pp.397-405
• /
• 2023

As interest in greenhouse gas reduction has increased in all sectors, the discussion of the International Maritime Organization (IMO) to regulate pollution by ships is attracting attention in international shipping. At the 80th IMO MEPC held in July 2023, the 「2023 IMO Strategy for the Reduction of Green House Gases from Ships (MEPC. 377(80))」 was adopted, which included the net-zero target around 2050, and a firm intention to the decarbonization of the international shipping sector showed. In particular, energy, fuel and technology targets for zero or near-zero greenhouse gas emissions by 2030 were added as new targets, and total greenhouse gas emission checkpoints for 2030 and 2040 were added as an indicator for achieving the 2050 target. The IMO's goal setting for 2030, which is about seven years away, will impose a lot of technical, economic, and political burden despite the decarbonization technology of international shipping, which has grown to a significant level in a short period of time. Accordingly, this paper presents the comprehensive impact of the 2023 IMO GHG Strategy on international shipping.

• KIEAE Journal
• /
• 제15권1호
• /
• pp.147-154
• /
• 2015

Environmental impact assessment techniques have been developed as a result of the worldwide efforts to reduce the environmental impact of global warming. By using the quantification method in the construction industry, it is now possible to manage the greenhouse gas is to systematically evaluate the impact on the environment over the entire construction process. In particular, the proportion of greenhouse gas emissions at the production stage of construction material occupied is high, and efforts are needed in the construction field. In this study, intended for concrete products for the construction materials, by using the LCA evaluation method, we compared the results of environmental impact assessment and carbon emissions of developing products that have been applied low-carbon technologies compared to existing products. As a result, by introducing a raw material of industrial waste, showed carbon reduction. Through a comparison of the carbon emission reduction effect of low-carbon technologies, it is intended to provide academic data for the evaluation of greenhouse gases in the construction sector and the development of low-carbon technologies of the future.

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

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2021년도 추계학술대회
• /
• pp.201-202
• /
• 2021

국제해운에서의 선박으로부터 배출되는 온실가스에 대한 규제는 가일층 강화되고 있으며 국제해사기구에서 수립한 온실가스 저감목표는 기술적 및 운항적 측면에서 해운선사에는 커다란 도전으로 작용하고 있다. 국제해사기구는 탄소집약도 기준 2008년 대비하여 2030년 까지 30% 및 2050년 까지 70%를 감축하고 총배출량 기준 50%까지 감축하는 것을 목표로 삼고 있다. 이의 실현을 위해 IMO는 단기 및 중장기 조치를 일부 채택하여 2023년부터 현존선에 대한 에너지효율 지표인 EEXI 적용과 일부 선형에 대한 EEDI 3단계 조기 적용 등의 기술적 조치 채택하였으며 선박의 탄소집약지수인 CII를 채택하여 운영적 측면도 온실가스 저감을 위한 조치를

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2011년도 춘계학술대회 논문집
• /
• pp.536-543
• /
• 2011

The previous researches on railway sector have focused on the total greenhouse gas(GHG) emission through national approaches. The aim of this study was to calculate GHG emission at a local government level to measure each city's GHG intensity on rail transportation. This study followed 'the guidelines for local government greenhouse gas inventory(issued by Korea Environment Corporation)' including VKT(Vehicle kilometers Travelled) methodology for railway inventory at a metropolitan area. As a result, the gyeongsangbuk-do emitted the highest GHG emissions at a local government level, followed by chungcheongnam-do and chungcheongbuk-do in 2006. Among several cities, Gimcheon-city emitted the highest GHG at basic government level in 2006. In future, the calculation of GHG emissions at local government level can be applied to establish various policies for GHG reduction.

• 동력기계공학회지
• /
• 제21권6호
• /
• pp.110-116
• /
• 2017

Recently the global warming caused by greenhouse gas has emerged as a global environmental problem. For this reason the continued efforts to reduce greenhouse gas emission by international cooperation and each country are in progress. Climate changing has been recognized as the world economy development from fossil fuel use is the culprit. The international maritime organization marine environment protection committee of the global warming reduction emerged restrictions on air pollution have been strengthened. Therefore, the author has investigated the effects of fuel temperature on the characteristics of combustion and performance, using an four-cycle, six cylinders and direct injection diesel engine. The results of cylinder pressure, rate of pressure rise, rate of heat release and specific fuel consumption were increased by changing of fuel temperature.

• 터널과지하공간
• /
• 제18권3호
• /
• pp.175-184
• /
• 2008

본 고에서는 온실가스 감축방안으로 배출 $CO_2$를 지하심부에 격리 저장시키는 지중 저장기술의 국내외 기술동향을 살펴보고 지반 및 암반공학적 관련기술로서 $CO_2$ 주입에 따른 대상지층의 역학적 안정성 및 누출경로 평가를 위한 열-수리-역학적 연계해석기술 및 적용사례, 기술개발요소를 소개하였다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2004년도 추계학술대회 논문집 전력기술부문
• /
• pp.266-268
• /
• 2004

This paper presents the greenhouse gas emission trading scheme which is under progress as a pilot project at the power sector in preparation for UNFCCC. By referring UK's, Emission Trading is introduced incentive auction to maximize the reduction of greenhouse gas emission. At the 1st step, from year 2006 to 2008, only CO2 is regarded as an objective target to decrease but emission credit is excluded with an assumption and only 5 Generation company take part in as participants. The market operating procedure is composed of participants' registration, baseline verification, incentive auction, the registration of initial and yearly allocation, emission trading, yearly emission verification & approval, yearly obligation conformity, carry forward & incentive grant. It can be serve a guideline the whole aspects of emission trading which will start in 2006 including operation, verification and profit sharing.