• Journal of the Korean Institute of Gas
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• v.12 no.3
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• pp.81-84
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• 2008

In this paper, the research was applied the mixture gas of Propane-DME (dimethyl ether) for being commercialization to residential gas ranges. In order to examine a correspondence between Korean Standard and thermal efficiency characteristics at each burner, experiments were performed with 100% Propane and the mixture gas of 80% Propane-20% DME. The experimental results were shown that the higher a mixture ratio of DME was used, the lower a thermal efficiency was gained. Those were due to low caloric value of DME. With 80% Propane-20% DME mixture gas, one of residential gas ranges was not satisfied the condition for the thermal efficiency value, 40%, Korean Standard. Consequently, the research needs about the standard for being commercialization to the mixture gas of Propane-DME.

• Korean Chemical Engineering Research
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• v.50 no.2
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• pp.328-333
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• 2012

In this study, CFD simulation was performed with commercial CFD code FLUENT for the 3D mixing tank model (1 m in a diameter and 2.5 m in a height) of DME-Propane liquified fuels. Initial condition set-up with existence of DME 146 l at the upper side of mixing tank and Propane 770 l at the lower side of mixing tank. Characteristics of mixture and fluid flow were observed for 34 hours simulation. Two liquid fuel were uniformly mixed within range of 3 mol% after 24 hours, and range of 1 mol% after 34 hours. The simulation result following 4 hours was verified with KOGAS experimental data.

• Korean Chemical Engineering Research
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• v.50 no.3
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• pp.464-470
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• 2012

To study characteristics of DME and Propane blended fuel in mixing drum as time passed, mixing experiment of two components was performed. After 20 wt% of DME and 80 wt% of Propane were injected into mixing drum sequentially, and the mixture ratio of blended fuel was analyzed at several sampling ports. Consequently, DME and Propane were not easily mixed and DME was sunk to the bottom of the mixing drum by the density difference. The daily rate of DME ingredient increase was 0.2-0.3 wt%, and it took over 500 hours until two of them were mixed uniformly. And after recirculation of blended fuel in mixing drum, DME and Propane were mixed immediately and uniformly.