Palm methyl ester (PME) is an attractive alternate biofuel produced by the transesterification of palm oil with methanol. This paper is a sequel to our earlier papers on the comparison of the flame structure and emission characteristics of neat PME with those of petroleum-derived fuels (No. 2 diesel and neat Jet A). Blends of prevaporized Jet A fuel and PME (25%, 50%, and 75% by volume) were studied in a laminar flame environment at burner-exit equivalence ratios of 2, 3, and 7. The global combustion characteristics including flame length, CO and NO emission indices, radiative heat fraction, and in-flame profiles of species concentration (CO, CO2, NO, and O2), temperature, and soot volume concentration were measured. The global CO emission index decreased significantly with the PME content in the blend at an equivalence ratio of 7; a 30% reduction was observed with the addition of 25% PME by volume, and a further reduction of 25% was observed with the addition of another 25% PME. The global NO emission index of the neat PME flame was 35% lower than that of the Jet A flame at an equivalence ratio of 2. The near-burner homogeneous gas-phase reaction zone increased in length with the addition of PME at all equivalence ratios. The concentration measurements highlighted the nonmonotonic variation of properties with the volume concentration of PME in the fuel blend. The fuel-bound oxygen and hydrogen of PME affected the combustion properties significantly.

References

References
1.
Annual Energy Outlook
,
2015
, “
With Projections to 2040
,” U.S. Energy Information Administration, Washington, DC, Report No. DOE/EIA-0383.
2.
Lee
,
S. W.
,
Herage
,
T.
, and
Young
,
B.
,
2004
, “
Emission Reduction Potential From the Combustion of Soy Methyl Ester Fuel Blended With Petroleum Distillate Fuel
,”
Fuel
,
83
(
11
), pp.
1607
1613
.
3.
ASTM,
2011
, “
Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons
,”
ASTM
International, West Conshohocken, PA, Standard No. ASTM D7566-14c.
4.
Xue
,
J.
,
Grift
,
T. E.
, and
Hansen
,
A. C.
,
2011
, “
Effect of Biodiesel on Engine Performances and Emissions
,”
Renewable Sustainable Energy Rev.
,
15
(
2
), pp.
1098
1116
.
5.
Tan
,
K. T.
,
Lee
,
K. T.
,
Mohamed
,
A. R.
, and
Bhatia
,
S.
,
2009
, “
Palm Oil: Addressing Issues and Towards Sustainable Development
,”
Renewable Sustainable Energy Rev.
,
13
(
2
), pp.
420
427
.
6.
Ng
,
J. H.
,
Ng
,
H. K.
, and
Gan
,
S.
,
2012
, “
Characterization of Engine-Out Responses From a Light-Duty Diesel Engine Fueled With Palm Methyl Ester (PME)
,”
Appl. Energy
,
90
(
1
), pp.
58
67
.
7.
Sharon
,
H.
,
Karuppasamy
,
K.
,
Soban Kumar
,
D.
, and
Sundaresan
,
A.
,
2012
, “
A Test on DI Diesel Engine Fueled With Methyl Esters of Used Palm Oil
,”
Renewable Energy
,
47
, pp.
160
166
.
8.
Hashimoto
,
N.
,
Ozawa
,
Y.
,
Mori
,
N.
,
Yuri
,
I.
, and
Hisamatsu
,
T.
,
2008
, “
Fundamental Combustion Characteristics of Palm Methyl Ester (PME) as Alternative Fuel for Gas Turbines
,”
Fuel
,
87
(
15–16
), pp.
3373
3378
.
9.
Chong
,
C. T.
, and
Hochgreb
,
S.
,
2011
, “
Measurements of Laminar Flame Speeds of Liquid Fuels: Jet-A1, Diesel, Palm Methyl Esters and Blends Using Particle Imaging Velocimetry (PIV)
,”
Proc. Combust. Inst.
,
33
(
1
), pp.
979
986
.
10.
Love
,
N. D.
, Jr.
,
Parthasarathy
,
R. N.
, and
Gollahalli
,
S. R.
,
2009
, “
Rapid Characterization of Radiation and Pollutant Emissions of Biodiesel and Hydrocarbon Liquid Diesel Fuels
,”
ASME J. Energy Resources Technol.
,
131
(
1
), p.
012202
.
11.
Love
,
N. D.
, Jr.
,
Parthasarathy
,
R. N.
, and
Gollahalli
,
S. R.
,
2009
, “
Effect of Iodine Number on NOx Formation in Laminar Flames of Oxygenated Biofuels
,”
Int. J. Green Energy
,
6
(
4
), pp.
323
332
.
12.
Love
,
N. D.
, Jr.
,
Parthasarathy
,
R. N.
, and
Gollahalli
,
S. R.
,
2011
, “
Concentration Measurements of CH and OH Radicals in Laminar Biofuel Flames
,”
Int. J. Green Energy
,
8
(
1
), pp.
113
120
.
13.
Singh
,
V. N.
,
Parthasarathy
,
R. N.
, and
Gollahalli
,
S. R.
,
2013
, “
Radiation and Emission Characteristics of Laminar Partially Premixed Flames of Petroleum Diesel and Canola Methyl Ester Blends
,”
J. Pet. Sci. Res.
,
2
(
3
), pp.
97
103
.
14.
Romero
,
D.
,
Parthasarathy
,
R. N.
, and
Gollahalli
,
S. R.
,
2014
, “
Laminar Flame Characteristics of Partially Premixed Prevaporized Palm Methyl Ester and Diesel Flames
,”
ASME J. Energy Resources Technol.
,
136
(
3
), p.
032204
.
15.
Gollahalli
,
S. R.
,
Parthasarathy
,
R. N.
, and
Balakrishnan
,
A.
,
2014
, “
Flame Characteristics of Vaporized Renewable Fuels and Their Blends With Petroleum Fuels
,”
Novel Combustion Concepts for Sustainable Energy Development
,
Springer
, New Delhi, India, pp.
297
328
.
16.
Balakrishnan
,
A.
,
Parthasarathy
,
R. N.
, and
Gollahalli
,
S. R.
,
2014
, “
Laminar Partially Premixed Flames of Blends of Pre-Vaporized Jet-A Fuel and Palm Methyl Ester
,”
ASME
Paper No. IMECE2014-36930.
17.
Flynn
,
P.
,
Durrett
,
R.
,
Hunter
,
G.
,
Loye
,
A.
,
Akinyemi
,
O.
,
Dec
,
J.
, and
Westbrook
,
C.
,
1999
, “
Diesel Combustion: An Integrated View Combining Laser Diagnostics, Chemical Kinetics, and Empirical Validation
,”
SAE
Paper No. 1999-01-0509.
18.
Delichatsios
,
M. A.
,
1993
, “
Transition From Momentum to Buoyancy-Controlled Turbulent Jet Diffusion Flames and Flame Height Relationships
,”
Combust. Flame
,
92
(
4
), pp.
349
364
.
19.
Turns
,
S.
,
2011
,
An Introduction to Combustion
,
3rd ed.
,
McGraw-Hill
,
New York
.
20.
Jha
,
S. K.
,
Fernando
,
S.
, and
To
,
S. D.
,
2008
, “
Flame Temperature Analysis of Biodiesel Blends and Components
,”
Fuel
,
87
(
10
), pp.
1982
1988
.
21.
Yagi
,
S.
, and
Iino
,
H.
,
1962
, “
Radiation From Soot Particles in Luminous Flames
,”
8th International Symposium on Combustion
, Pasadena, CA, Aug. 28–Sept. 3, 1960, The Combustion Institute, Pittsburgh, PA, pp.
288
293
.
22.
Bryce
,
D.
,
Ladommatos
,
N.
, and
Zhao
,
H.
,
2000
, “
Quantitative Investigation of Soot Distribution by Laser-Induced Incandescence
,”
Appl. Opt.
,
39
(
27
), pp.
5012
5022
.
23.
Choi
,
S. C.
,
2009
, “
Measurement and Analysis of the Dimensionless Extinction Constant for Diesel and Biodiesel Soot: Influence of Pressure, Wavelength and Fuel-Type
,” Ph.D. dissertation, Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA.
24.
Hura
,
H. S.
, and
Glassman
,
I.
,
1989
, “
Soot Formation in Diffusion Flames of Fuel/Oxygen Mixtures
,”
Symp. (Int.) Combust.
,
22
(
1
), pp.
371
378
.
25.
Siegel
,
R.
, and
Howell
,
J. R.
,
2001
,
Thermal Radiation Heat Transfer
,
4th ed.
,
McGraw-Hill
,
New York
.
26.
Kreith
,
F.
,
1973
,
Principles of Heat Transfer
,
Addison-Wesley
,
Cambridge, MA
.
27.
Merchan-Merchan
,
W.
,
Sanmiguel
,
S. G.
, and
McCollam
,
S.
,
2012
, “
Analysis of Soot Particles Derived From Biodiesels and Diesel Fuel Air-Flames
,”
Fuel
,
102
, pp.
525
535
.
28.
Grisanti
,
M.
,
Parthasarathy
,
R.
, and
Gollahalli
,
S.
,
2011
, “
Physical and Combustion Properties of Biofuels and Biofuel Blends With Petroleum Fuels
,”
AIAA
Paper No. 2011-6012.
29.
Romero
,
D.
,
2013
, “
Combustion Characteristics of Laminar Premixed Flames of Palm Methyl Ester and its Blends With Diesel
,” M.S. thesis, School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, OK.
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