• Journal of the Korean Institute of Gas
• /
• v.14 no.4
• /
• pp.51-55
• /
• 2010

The global activities to reduce the $CO_2$ emission as a greenhouse gas have been various efforts. Under this circumstance, small and medium sized gas field containing $CO_2$ to develop as LNG is not economic feasibility. Particularly, for the separation of $CO_2$ in gas field, separation facilities should be installed to add. This is and increase in plant construction cost and separated $CO_2$ emission into the atmosphere is not the result of greenhouse gas reduction. When the uneconomic gas field apply the KOGAS DME process, the gas field containing $CO_2$ can be increase economic feasibility because of natural gas and $CO_2$ can be use to resource gas. The Tri-reformer produced syngas as H2 and CO in KOGAS DME process and the resource gases are natural gas, steam, oxygen and $CO_2$. The $CO_2$ is used as raw material gases from recover $CO_2$ in DME process. In this study, we investigated range of application of $CO_2$ in gas field.

• Journal of Climate Change Research
• /
• v.3 no.3
• /
• pp.195-209
• /
• 2012

There are four differentiated levels to quantify the amount of greenhouse gas emissions from a facility, which are Tier 1 to 4 based on the IPCC guidelines. In this study, the emission estimates from all tier levels were calculated to compare their total $CO_2$ emission results among themselves for seven facilities, including three sectors of electricity generation, municipal solid waste incineration, and cement manufacturing for three months between February and May 2011. Generally the measured $CO_2$ emissions by Tier 4 were higher than the calculated $CO_2$ emissions by Tier 3, which had been also observed for the power plants in the USA. It was found out that to obtain more reliable estimation for Tier 3, accurate analysis of the composition of the fuel used should be carried out. It was suggested that further refinement on the administrative guidelines be made to make it more robust.

• Journal of Korean Society of Environmental Engineers
• /
• v.31 no.7
• /
• pp.565-572
• /
• 2009

Greenhouse gas(GHG) inventories and basic strategies for Jeonbuk regional government were established to reduce greenhouse gas emissions. The method to construct GHG inventories of Jeonbuk followed the 'Revised IPCC 1996 Guidelines'which was used for the 'Third National Communication of the Republic of Korea under UNFCCC'. Korean government could use primary energy consumption for the energy industries section in the national GHG inventories. However, regional governments should use secondary energy consumption (included electricity consumption) for the energy industries section for their GHG inventories because they could not control the emission of energy transformation section. In the result of Jeonbuk GHG inventories in 2006, carbon dioxide($CO_2$) emissions from fuel combustion covered 87.1% of total emissions. Methane($CH_4$), carbon dioxide($CO_2$) from other sections, nitrous oxide($N_2O$) and F-gas(HFCs, PFCs, $SF_6$) accounted for 8.1, 2.2, 1.6 and 1.0% of total emissions, respectively. The sectional emission decreased in the order of the energy(88.0%), agriculture(7.6%), waste(2.3%) and industrial processes(2.1%) section. The energy industries section that contained electricity consumption was the most dominant emission source in the energy section. F-gas consumption, rice cultivation and waste incineration were main emission sources in the industrial processes, agriculture and waste section, respectively. In this study, basic directions of each section were established by the results of Jeonbuk GHG inventories in 2006.

• Journal of Korean Society of Forest Science
• /
• v.99 no.4
• /
• pp.597-602
• /
• 2010

The most basic matter to establish forest carbon circulation village is statistic on greenhouse gas emissions. But currently, although there is statistic on greenhouse gas emissions in the level of city or province, there is not statistic on greenhouse gas emission in village unit. According to the results, The model area is located in Seobyeok-ri, Chunyang-myeon, Bonghwa-gun, Gyeongsangbuk-do, the total $CO_2$emissions caused by energy used in the model area was $1,755tCO_2$. Heating accounts for 55% of total emissions followed by 23% for power and 22% for vehicles. The model area emitted $572tCO_2$ due to rice growing and livestock raising, accounting for approximately 24.5% of total $CO_2$ emissions. It is expected that a reduction of as much as $884tCO_2$ emissions will be made from the current $964tCO_2$ to a level of 1/12th that amount, or $80tCO_2$ by replacing heating energy currently used in the model area with wood bioenergy such as wood chips or pellets. In addition, carbon emission reduction is expected for both heating and power by replacing the power consumption in houses, buildings, and street lights with solar power.

• Spatial Information Research
• /
• v.19 no.6
• /
• pp.11-18
• /
• 2011

Urban space is the main contributor of greenhouse gas emissions, a primary cause of global warming. In order to reduce greenhouse gas emissions, planning at a city-level is necessary. The aim of this research is to develop a carbon emission model which can be used to create and manage urban spaces. In order to achieve this aim, the following methodologies were utilized. First, urban planning criteria related to population, landuse, and activity level were selected through theoretical speculation. Second, carbon dioxide emission was calculated based on electricity, gas energy, heating, petroleum, and water usages. Third, Seoul was selected as a case study city, and a carbon emission model was developed through a relational analysis between Seoul's urban planning criteria and carbon emissions. Thus far, various efforts have been made to respond to climate changes in urban spaces, but these have been limited to analyzing contributing factors in terms of their total amounts of carbon emissions in the entire city. However, the carbon emission model of this study is derived from urban planing criteria at a detailed scale. This sets our study apart from other studies by demonstrating a specific model in a local setting which can be utilized for lowering carbon emissions at a city level.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2010.10a
• /
• pp.385-389
• /
• 2010

본 연구에서는 산불발생 시 온실가스의 배출량을 추정하기 위한 기초 연구로서 산림연료의 연소에 따른 탄소배출량을 분석하였다. 산림연료는 소나무를 대상으로 생엽, 가지, 수피 등 부위별로 연소실험을 수행하였으며, 콘칼로리미터를 이용하여 일산화탄소와 이산화탄소의 배출량을 분석하였다. 중량 50g의 연료 기준, 일산화탄소의 배출량은 1.8~4.0g 정도였으며, 이산화탄소의 배출량은 49.3~84.7g 정도를 나타냈다. 부위별로 큰 차이를 나타냈는데 수피는 생엽과 가지보다 상대적으로 많은 일산화탄소와 이산화탄소를 배출하는 것으로 나타났다.

• Korea Petroleum Association Journal
• /
• no.11 s.239
• /
• pp.86-89
• /
• 2003

온실가스 감축 의무를 규정한 쿄토의정서의 발효 여부를 결정지을 기후변화협약 제9차 당사국회의(cop9)가 12월 1일부터 12일까지 이탈리아 밀라노에서 개최되고 있다. 기후변화협약은 지구온난화 현상과 기상이변을 일으키는 온실가스를 지난 1990년 수준에서 더 이상 늘리지 않기로 한 국제협약이다. 기후변화협약은 지난 1992년 6월 '리우환경회의'에서 채택돼 각국 비준을 거쳐 1994년부터 발효됐다. 하지만 기후변화협약은 강제성이 없어서 어느 나라도 이산화탄소를 줄이는 조치를 적극적으로 취하지 않았다. 이러한 문제점을 해결하기 위하여 1997년에 마련된 '쿄토의정서'가 채택되었다. 이에 의하면 선진 38개국들은 2008~2012년 사이에 1990년 발생량보다 평균 5.2%를 더 줄이기로 합의하고 세계 온실가스 배출량의 55%의 비준을 의정서 발효조건으로 규정하였다. 그러나 이산화탄소 최대 배출국인 미국이 2001년에 탈퇴를 선언하고, 배출량의 17.4%를 차지하는 러시아도 최근 비준 거부의사를 밝히고 있어 쿄토의정서의 발효는 사실상 어려워진 상태이다. 쿄토의정서가 발효되지 않고 폐기되더라도 기후변화 협약은 유효하기 때문에 새로운 의정서 논의가 제기될 전망이며, 세계 9위의 온실가스 배출국인 우리나라에 대한 온실가스 감축의무 부담요구는 가중될 전망이다. 다시 관심의 초점으로 떠오르는 기후변화협약에 대한 이해를 돕기 위해 산업자원부가 발표한 자료를 게재 하였다.<편집자 주>

• The Science & Technology
• /
• v.32 no.1 s.356
• /
• pp.90-91
• /
• 1999

우리나라는 세계 12위의 이산화탄소 배출국으로 앞으로 기후변화협약에 따라 2000년까지 배출량을 5% 줄여야 한다. 그런데 최근 한국에너지기술연구소의 조순형박사팀은 공장 굴뚝에서 나오는 배기가스에서 이산화탄소를 흡착ㆍ분리하여 회수하는 새로운 기술개발에 성공하는 개가를 올렸다. 이렇게 분리된 이산화탄소는 99.9% 고순도로 공업용 화학원료로 재활용이 가능하여 일석이조의 효과를 얻게 되었다.

• Journal of Korean Society of Transportation
• /
• v.28 no.6
• /
• pp.33-42
• /
• 2010

Recently, the reduction of greenhouse gases(GHG) for climate change is the most important international issue. In order to control efficiency GHG emission rate reduction, it is essential to establish GHG emission inventory preferentially. The emission of ships that are emitting its $CO_2$ in international waters is becoming chief among the issues which country is put under an obligation. In the IMO reports, shipping is estimate to emit 1,046million tonnes of $CO_2$, which corresponds to 3.3% of global emission during 2007. International shipping is estimated to have emitted 870 million tonnes, about 2.7% of global emission of $CO_2$ in 2007. In this study, the general information of GHG emission, based on fuel consumption statistic, Tier 1, and the emission inventory is calculated to break down in to domestic and international emission. The GHG emission from ships in Korea was total 31,646 Gg $CO_2$-eq in 2009, which is included fishing, Korea flag coastal ship, Korea flag ocean going ship and foreign flag ships. And domestic emission and international emission was 5,398Gg $CO_2$-eq, 7,630Gg $CO_2$-eq and foreign flag ship was 18,618Gg $CO_2$-eq respectively.

• 한국신재생에너지학회:학술대회논문집
• /
• 2005.11a
• /
• pp.60-75
• /
• 2005

천연가스차량이 배출하는 미연 탄화수소 중 약 80%이상이 메탄으로 구성 되어있다. 메탄은 그 자체로 유독성 물질은 아니지만 이산화탄소와 더불어 지구온난화를 유발하는 온실가스로 향후 강력한 규제가 예상되는 물질로 이를 저감하는 기술 개발이 이루어져야하나 연료 특성상 이를 줄이는데 어려움이 있다. 최근 연구에 의하면 천연가스엔진에 수소를 일정량(15%이상) 첨가할 경우 배출가스 및 성능 이 상당량 개선되는 결과를 보이고 있다. 이는 종래 천연가스 연소의 문제점인 지연된 화염 전파 속도를 수소 연료를 첨가함에 따라 화염 전파속도를 촉진시켜 적정한 연소를 야기 시켜 미연탄화수소 배출이 줄어들고 열효율도 향상되는 결과를 보이고 있다. 이와 같이 수소와 천연가스연료의 각각의 장점을 활용한 Hy-thane 엔진을 개발할 경우 무공해엔진에 근접한 초 저공해 동력장치 개발이 가능하며 이에 대한 상용화 측면에서 산업용 발전기, GEHP, 차량용 엔진 등 활용도가 크기 때문에 그 개발이 절실히 필요하다고 할 수 있다. 따라서 본 과제에서는 이중연료를 사용하는 수소-천연가스 기관을 개발하고 이를 효과적으로 제어할 수 있는 제어시스템을 개발하여, 기관효율 향상과 배기가스저감을 이루었다.