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JSIR Vol.71 [2012] >
JSIR Vol.71(11) [November 2012] >
| Title: | Macroscopic spray characteristics of palm oil-diesel blends in a constant volume combustion chamber |
| Authors: | Soid, S.N.
Zainal, Z.A.
Iqbal, M. A.
Miskam, M.A. |
| Keywords: | Palm oil blends
Bio-fuel
Spray characteristics |
| Issue Date: | Nov-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Concern with fossil fuel depletion and environmental
degradation promotes the use of renewable energy sources in particular bio-fuel
for automotive and power generation. Palm oil in its refined form as cooking
oil can be used as fuel in diesel engines. Present study evaluates macroscopic
spray characteristics, such as tip penetration, cone angle and spray area using
direct injection diesel injector in a constant volume combustion chamber. Palm
oil blend with diesel at 20, 40, 60, and 80 % as well as pure palm oil (100 %)
and diesel were tested separately using direct visualization technique. Spray
developments were investigated at elevated injection pressure starting from 20
MPa (original setting) to 30 and 34 MPa (maximum pressure). Experimental
results for palm oil blends show that, spray development process is highly
affected with increasing palm oil in the blend. Spray tip penetration and cone
angle of blends were found to decrease by about 50 and 30 % respectively
compared to diesel fuel. At elevated injection pressures, spray characteristics
of the blends show significant improvement. Tip penetration and spray area for
P20 at 34 MPa were comparable to diesel at its original injection pressure
setting. Moreover, blends average cone angles were found larger at 30 MPa, by
about 14.93, 11.47, 7.34 and 1.84 % for P20, P40, P60 and P80 respectively. For
P20, 34 MPa injection pressure is sufficient to display spray characteristics
similar to diesel, but require higher than 34 MPa injection pressure for other
blends. |
| Page(s): | 740-747 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Source: | JSIR Vol.71(11) [November 2012]
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