• LP가스
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• v.20 no.2
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• pp.59-67
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• 2008

지난 4월 2일 GAS KOREA 2008 전시회가 개최된 서울무역전시장에서 '한국DME협회 분과발표회'가 열렸다. 이날 분과발표회에서는 'DME Demo 플랜트 현황소개(한국가스공사 연구 개발원 조원준 박사 "DME 연료실증, 시험연구 사업현황(한국가스공사 연구개발원 백영순 박사)" 커먼레일형 연료공급계를 탑재한 2리터급 DME 차량개발(자동차 부품연구원 정재우 박사) "급속압축장치를 이용한 불균일 예혼합기의 DME HCCI연소 과정에 관한 연구(울산대학교 임옥택 교수) DME의 자착화 측정 및 세탄가의 추정(인하대학교 이대엽교수)" 직접분사식 압축착화기관에서 DME연료의 분무미립화 및 배출물 특성(한양대학교 이창식 교수)' 에 대한 발표도 이뤄졌다.

• Journal of Energy Engineering
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• v.24 no.4
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• pp.33-41
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• 2015

Dimethyl ether (DME) can be used as a clean diesel alternative fuel due to the high cetane number and low emission, it can also be applied to automotive fuel as a blended liquefied petroleum gas (LPG) because physical properties are similar to those of LPG. In this study, feasibility test of LPG vehicle using blended DME-LPG fuel was investigated. Three types of fuel supply such as LPLi (Liquid phase LPG injection), LPGi (Liquid phase gas injection) and mixer type were selected to consider the LPG fuel-injection system. The performance characteristics of LPG vehicle were examined by using LPG and blended DME-LPG fuel in order to compare the exhaust emissions (CO, THC, $NO_X$) and fuel economy. The emissions and fuel economy of DME-LPG blend fuel were comparable to those of LPG with increasing driving distance.

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.161.1-161.1
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• 2010

대표적인 에너지원인 석유는 매장량 및 매장지역이 한정되어 있으며, 환경오염, 연료공급 등의 문제를 안고 있다. 에너지의 대부분을 수입하고 있는 우리나라는 경제성장 및 소득수준 향상으로 에너지 소비량이 증가하면서, 국제유가 상승은 국가 경제에도 큰 악영향을 미치고 있다. 이러한 상황에서 화석연료인 석유를 대체하기 위하여 최근 차세대 대체에너지에 대한 관심이 높아지면서 청정연료인 디메틸에테르(Dimethyl Ether : DME)의 사용방안에 대한 기술개발이 활발히 진행되고 있다. 정부(지식경제부)에서는 DME 보급을 위한 기본계획에서 3단계의 보급계획에 따라 2013년까지 DME를 상용화하겠다는 목표를 발표한바 있다. 그래서 2007년부터 2009년까지 2년간 정부 주관 하에 한국가스공사 등이 1단계 DME 보급을 위한 실증연구를 수행하였다. 1단계 실증연구를 통해 DME-LPG 혼합연료에 대한 품질 및 안전기준을 마련하였으며, DME를 일반 가정 및 상업용으로 시범보급 할 수 있는 특례고시가 2009년 11월에 제정되었다. 현재 제정된 DME-LPG 시범보급 특례고시에 따라 2009년 12월부터 2011년 11월까지 2년간 2단계 시범보급 연구가 진행되고 있다. 2단계 시범보급연구에서는 한국가스공사외 3개 기관이 함께 참여하여 연구를 수행하고 있다. 시범보급에서는 DME-LPG 혼합연료를 일반 가정 및 상업용으로 직접 소비자에게 시범적으로 보급하는 만큼, DME-LPG 혼합연료가 LPG 연료에 비해서 연소효율이 어느 정도 수준인지를 비교하는 것이 매우 중요한 사항이므로 본 실험에서는 가정 및 상업용으로 사용되는 연소기기를 대상으로 LPG 및 DME-LPG 혼합연료에 대해 연소효율을 측정하는 실험을 수행하였다.

• Journal of Energy Engineering
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• v.16 no.2
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• pp.73-82
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• 2007

World energy demand has been dramatically increasing because of using much energy of developing countries in Asia. The other side, conventional fossil fuels supply has been gradually decreasing due to the limitation of fossil fuel reserves and changing to the use of environmental-friendly energy for prevention the emission of carbon dioxide, NOx and SOx. Based on these times and status, we get the n necessity of the conversion of environmental-friendly energy and the high effective utilization of conventional and unconventional energy. Recently, promised DME fuel as environmental-friendly and substituted oils will be introduced the status of technology and market in domestic and foreign.

• Journal of the Korean Institute of Gas
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• v.15 no.2
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• pp.57-62
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• 2011

DME(Dimethyl Ehther) is considered as an attractive fuel in terms of clean, environmentally friendly form of energy, multi-source and multi-purpose. As the physical properties of DME are almost similar to LPG, DME can be mixed with LPG and DME-LPG mixture fuels seem to be employed without major remodeling of the existing LPG supply infrastructure. However, little attention has been given to the effect of different DME-LPG mixture fuels on consequence analysis to adjacent facilities, buildings and etc. In this work, the consequence analysis by different DME-LPG mixture fuels has been done. The results were discussed in terms of release rate, jet fire, vapor cloud explosions, BLEVEs and etc. It was found that the consequences estimated from fire and explosion scenarios assumed were almost similar for both LPG and DME 20 %.

• Applied Chemistry for Engineering
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• v.20 no.4
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• pp.355-362
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• 2009

Fuels based on petroleum will eventually run out in the near future. DME (Di-methyl Ether) is a clean energy source that can be manufactured from various raw materials such as natural gas, coal as well as biomass. As DME has no carbon-carbon bond in its molecular structure and is an oxygenate fuel, its combustion essentially generates no soot as well as no SOx. Because the physical properties of DME are similar to those of LPG, the LPG distribution infrastructure can be converted to use with DME. DME has such high cetane number of 55~60 that it can be used as a diesel engine fuel. Practical use of DME as a next-generation clean fuel or next-generation chemical feedstock is advancing in the fields of power generation, diesel engines, household use, and fuel cells, among others. The purpose of this paper is review the characteristics, standardization, status of research and development in domestic and foreign countries of DME.

• Journal of the Korean Institute of Gas
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• v.12 no.3
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• pp.7-12
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• 2008

In this study, a spark ignition engine operated with the DME blended LPG fuel was investigated experimentally. Performance, emissions characteristics including hydrocarbon, CO, NOx, and combustion stability of an SI engine fuelled with DME blended LPG fuel were examined at $1200{\sim}5200\;rpm$. Results showed that stable engine operation was possible for a wide range of engine loads within 20% mass content of DME fuel. Also, engine output power within 10% mass content of DME fuel was comparable to that of pure LPG fuel operation. However, engine output power was decreased and break specific fuel consumption (BSFC) was severely increased with the amount of blended fuel as the energy content of DME was much lower than that of LPG. DME blended LPG fuel is expected to be potential for enlarging DME market.

• Journal of the Korean Institute of Gas
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• v.15 no.3
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• pp.39-46
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• 2011

This study investigates the effects of the DME and n-Butane mixture and of the stratification on combustion characteristics of HCCI engine by chemical reaction calculation. First, the existing DME reaction scheme and n-Butane is combined to make new chemical reaction model, then validating the effectiveness of new scheme. Furthermore, this study verify the HCCI combustion characteristics according to the changes of DME and n-Butane mixture ratio, which shows different auto ignition characteristics. Finally, it confirms the effects of stratification of mixture fuel on the reduction of pressure rise rate.

• LP가스
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• v.22 no.4
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• pp.32-39
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• 2010

지난 6.8(화)~11(금) 지식경제부, 한국가스공사와 우리협회, 시범사업자 등 DME혼합연료 시범사업관련자 10여명은 DME-LPG혼합연료의 유통 및 소비자 보급에 앞서 해외 혼합 연료 이용기술개발 및 사용현황 조사를 위해 중국의 DME시설을 방문 견학했다. 관련내용을 게재한다.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.36 no.4
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• pp.371-376
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• 2012

The experimental test was conducted for a heavy-duty DME bus in JE-05 exhaust gas test mode using a chassis dynamometer, exhaust gas analyzers, and a PM measurement system. The heavy-duty DME bus was not equipped with after-treatment systems such as DOC or DPF. The dynamic behavior, emission characteristics, and fuel economy of the bus were investigated with an 8.0-liter, 6-cylinder conventional diesel engine. The results showed that the dynamic behavior in DME mode was almost the same as in diesel mode. However, there was little difference among the two operation modes for $NO_x$ and CO emissions. THC emissions were lower for DME mode than for diesel mode. Also, the amount of PM emissions was remarkably lower than for the diesel mode because DME contains a greater amount of oxygen than diesel. The data showed that $CO_2$ emissions were almost similar in the two modes but fuel economy (calculated using heating value) was lower for DME mode than for diesel mode.