TY - JOUR
T1 - Experimental study on the combustion and no x emission characteristics of DME/LPG blended fuel using counterflow burner
AU - Lee, Dongjo
AU - Lee, Jae Seong
AU - Kim, Ho Young
AU - Chun, Chul Kyun
AU - James, Scott C.
AU - Yoon, Sam S.
N1 - Funding Information:
This research was supported by the Energy & Resource Recycling Project of Korea Institute of Energy Technology Evaluation and Planning. This work was partly supported by a Korea University Grant (2011).
PY - 2012/1/1
Y1 - 2012/1/1
N2 - Dimethyl ether (DME) continues to be considered as an alternative fuel to conventional hydrocarbon fuels. Specifically, DME has been considered as a substitute fuel for liquefied petroleum gas (LPG) because the physical and chemical characteristics of DME are similar to those of LPG. However, the combustion performance for DME has not yet been established. In this study, the combustion and NOx-emission characteristics of LPG, DME, and an LPG/DME-blended fuel were experimentally investigated in a counterflow nonpremixed flame. The flame structure, flame temperature, NOx concentration, and distribution of OH radicals are reported. In this experimental study, the types of LPG used were butane 100%, butane 80%+propane 20%, and butane 75%+propane 25% by mass with DME mole fraction varied from 0 to 100 mole%. The experimental results indicated that the combustion and NOx emission characteristics of LPG fuels varied with the DME mole fraction. As the DME mole fraction increased, the flame thickness increased, but the flame length decreased. Also, the flame became wider, and its origin moved closer to the oxidizer nozzle with increasing DME mole fraction. In addition, as the DME mole fraction increased, the maximum flame temperature increased due to fast pyrolysis of DME as a result of the high oxygen content (∼35% by mass) in DME. Moreover, NOx concentration decreased with increasing DME mole fraction in all LPGs.
AB - Dimethyl ether (DME) continues to be considered as an alternative fuel to conventional hydrocarbon fuels. Specifically, DME has been considered as a substitute fuel for liquefied petroleum gas (LPG) because the physical and chemical characteristics of DME are similar to those of LPG. However, the combustion performance for DME has not yet been established. In this study, the combustion and NOx-emission characteristics of LPG, DME, and an LPG/DME-blended fuel were experimentally investigated in a counterflow nonpremixed flame. The flame structure, flame temperature, NOx concentration, and distribution of OH radicals are reported. In this experimental study, the types of LPG used were butane 100%, butane 80%+propane 20%, and butane 75%+propane 25% by mass with DME mole fraction varied from 0 to 100 mole%. The experimental results indicated that the combustion and NOx emission characteristics of LPG fuels varied with the DME mole fraction. As the DME mole fraction increased, the flame thickness increased, but the flame length decreased. Also, the flame became wider, and its origin moved closer to the oxidizer nozzle with increasing DME mole fraction. In addition, as the DME mole fraction increased, the maximum flame temperature increased due to fast pyrolysis of DME as a result of the high oxygen content (∼35% by mass) in DME. Moreover, NOx concentration decreased with increasing DME mole fraction in all LPGs.
KW - Counterflow burner
KW - DME/LPG blended fuel
KW - Distribution of OH radicals
KW - NOx emission
KW - Nonpremixed flame
UR - http://www.scopus.com/inward/record.url?scp=84859743901&partnerID=8YFLogxK
U2 - 10.1080/00102202.2011.622319
DO - 10.1080/00102202.2011.622319
M3 - Article
AN - SCOPUS:84859743901
SN - 0010-2202
VL - 184
SP - 97
EP - 113
JO - Combustion Science and Technology
JF - Combustion Science and Technology
IS - 1
ER -