Dimethyl ether (DME) as an alternative fuel

Semelsberger, Troy A.; Borup, Rodney L.; Greene, Howard L.

doi:10.1016/j.jpowsour.2005.05.082

Cited by 1,070 publications

(526 citation statements)

References 62 publications

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“…These can either undergo β-scission to form methyl radicals and formaldehyde or add to molecular oxygen to form alkyl-peroxyl (CH 3 OCH 2 OCHO radicals. Table 5 presents a list of the low-temperature oxidation pathways of CH 3 OCH 3 .…”

Section: Low Temperature Oxidation Mechanismmentioning

confidence: 99%

“…Therefore, at higher pressure the equilibrium of this reaction favors the formation of CH 3 . O 2 radicals up to higher temperatures when compared to the 10 atm data.…”

Section: Methane Oxidationmentioning

confidence: 99%

“…It is more commonly produced in a two-step process, where syngas is converted to methanol which can then be used to generate DME through a dehydration reaction [2]. Semelsburger et al [3] found that DME ranks highly as an alternative fuel for the future.…”

Section: Introductionmentioning

confidence: 99%

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An ignition delay and kinetic modeling study of methane, dimethyl ether, and their mixtures at high pressures

Burke

Somers

O’Toole

et al. 2015

Combustion and Flame

397

279

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The development of accurate chemical kinetic models capable of predicting the combustion of methane and dimethyl ether in common combustion environments such as compression ignition engines and gas turbines is important as it provides valuable data and understanding of these fuels under conditions that are difficult and expensive to study in the real combustors. In this work, both experimental and chemical kinetic model-predicted ignition delay time data are provided covering a range of conditions relevant to gas turbine environments (T = 600 − 1600 K, p = 7 − 41 atm, φ = 0.3, 0.5, 1.0, and 2.0 in 'air' mixtures). The detailed chemical kinetic model (Mech 56.54) is capable of accurately predicting this wide range of data, and it is the first mechanism to incorporate high-level rate constant measurements and calculations where available for the reactions of DME. This mechanism is also the first to apply a pressure-dependent treatment to the low-temperature reactions of DME. It has been validated using available literature data including flow reactor, jet-stirred reactor, shock-tube ignition delay times, shock-tube speciation, flame speed, and flame speciation data. New ignition delay time measurements are presented for methane, dimethyl ether, and their mixtures; these data were obtained using three different shock tubes and a rapid compression machine. In addition to the DME/CH 4 blends, high-pressure data for pure DME and pure methane were also obtained. Where possible, the new * address:

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Section: Low Temperature Oxidation Mechanismmentioning

confidence: 99%

“…Therefore, at higher pressure the equilibrium of this reaction favors the formation of CH 3 . O 2 radicals up to higher temperatures when compared to the 10 atm data.…”

Section: Methane Oxidationmentioning

confidence: 99%

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An ignition delay and kinetic modeling study of methane, dimethyl ether, and their mixtures at high pressures

Burke

Somers

O’Toole

et al. 2015

Combustion and Flame

397

279

View full text Add to dashboard Cite

show abstract

“…DME is considered as an extremely clean burning alternative fuel for CI engines, and is potentially very helpful in reducing localized urban air pollution. It can easily auto-ignite due to its very high cetane number and results in practically soot-free combustion due to easy vaporization and complete absence of carbon-tocarbon bonds (Park and Lee, 2013;Semelsberger et al, 2006). Similar to hydrogen, it is also not found in nature.…”

Section: Dimethyl Ethermentioning

confidence: 99%

Biofuels and the Hybrid Fuel Sector

Ágarwal¹

2015

Proceedings of the Indian National Science Academy

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To enable India to cope with the predictable and challenging situation of a scarcity of petroleum fuels for surface transport in the future, we examine and evaluate in this study potential alternatives that can ensure adequate energy for the transport sector with acceptable environment implications. These alternatives can be broadly categorized into three groups from the perspective of planning a smooth transition from a conventional petroleum fuel-based transport system to sustainable energy alternatives. The first group includes non-conventional fossil-based resources such as compressed natural gas (CNG), liquefied petroleum gas (LPG), methane from coal beds and gas hydrates, shale oil, shale gas, etc. Use of these resources could provide energy security but cannot guarantee environmental benefits. The second group includes first generation biofuels (alcohol and biodiesel), and biomass-to-liquid (BTL) fuels. These fuels are renewable but their current production methods and base feedstock do not appear promising enough to provide for a large-scale supply of fuel in a sustainable manner. The third group includes second generation biofuels and hydrogen. The feasibility of large-scale hydrogen production from renewable resources holds promise for scalable implementation and sustainability in the future but this would require huge technological challenges to be overcome. This study describes the potential of this proposed fuel resource scenario for transport fuels and discusses the technological challenges that would have to be addressed for its large-scale implementation.

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“…Uncertainties in production costs and GHG emission reduction potentials of DME and methanol are high. Comparative studies can be found in Wahlund et al (2004) and Semelsberger et al (2006). Due to the uncertainties, a modeling of both methodologies will not produce significant advantages of one technology over the other.…”

mentioning

confidence: 99%

Cost-effective policy instruments for greenhouse gas emission reduction and fossil fuel substitution through bioenergy production in Austria

et al. 2011

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Climate change mitigation and security of energy supply are important targets of Austrian energy policy. Bioenergy production based on resources from agriculture and forestry is an important option to attain these targets. In order to increase the share of bioenergy, supporting policy instruments are necessary. The cost-effectiveness of these instruments in attaining policy targets depends on the availability of bioenergy technologies. Advanced technologies such as second generation biofuels, biomass gasification for power * Correspondence to: Johannes Schmidt, Institute for Sustainable Economic Development, University of Natural Ressources and Life Sciences, Feistmantelstraße 4, A-1180 Vienna, Austria. E-Mail: johannes.schmidt@boku.ac.at 2 production and bioenergy with carbon capture and storage (BECCS) will likely change the performance of policy instruments. This article assesses the cost-effectiveness of energy policy instruments with respect to greenhouse gas emission (GHG) reduction and fossil fuel substitution under consideration of new bioenergy technologies for the year 2030. Instruments that directly subsidize bioenergy are compared with instruments that aim at reducing GHG emissions. A spatially explicit modeling approach is used to account for biomass supply and energy distribution costs in Austria. Results indicate that a carbon tax performs cost effective with respect to both policy targets if BECCS is not available. However, the availability of BECCS creates a tradeoff between GHG emission reduction and fossil fuel substitution. Biofuel blending obligations are costly in attaining the policy targets.

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Dimethyl ether (DME) as an alternative fuel

Cited by 1,070 publications

References 62 publications

An ignition delay and kinetic modeling study of methane, dimethyl ether, and their mixtures at high pressures

An ignition delay and kinetic modeling study of methane, dimethyl ether, and their mixtures at high pressures

Biofuels and the Hybrid Fuel Sector

Cost-effective policy instruments for greenhouse gas emission reduction and fossil fuel substitution through bioenergy production in Austria

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