Report on combustibility of fuel oil

Fuel properties

CommentsOptical system

High-speedvideo camera

InjectorPhoto-sensor

28022

712

523

Sample No. Ｃ重油+水４０％

Date : Experiment 2011.4.27

Experimental condition

Test1. T=756K(483deg.C)P=2.1MPaNozzle : φ0.20mmO2 : 21%Injection temperature=107deg.C

Test2. T=756K(483deg.C)P=2.1MPaNozzle : φ0.20mmO2 : 21%Injection temperature=107deg.C

Optical Combustion Analyzer

Viscosity(cSt 50deg.C) - Viscosity(cSt 100deg.C) -

Sample No.

0 1 2 3 4 5 6

7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25

26 27 28 29 30 31(0) 32(1)

33(2) 34(3) 35(4) 36(5) 37(6) 38(7)

Dis

tanc

e fr

om n

ozzl

e tip

, mm

Start of injection

Time, ms

278

0

: End of injection( ) : Time of after burning

278

0

278

0

278

0

278

0

278

0

Experimental conditionTest1. T=756K(483deg.C)

P=2.1MPaNozzle : φ0.20mmO2 : 21%

Optical Combustion Analyzer

Sample No. Ｃ重油+水４０％Date : Experiment 2011.4.27

0 1 2 3 4 5 6

7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25

26 27 28 29 30 31(0) 32(1)

33(2) 34(3) 35(4) 36(5) 37(6) 38(7)

Dis

tanc

e fr

om n

ozzl

e tip

, mm

Start of injection

Time, ms

278

0

: End of injection( ) : Time of after burning

278

0

278

0

278

0

278

0

278

0

Optical Combustion Analyzer

Sample No. Ｃ重油+水４０％Date : Experiment 2011.4.27

Experimental conditionTest2. T=756K(483deg.C)

P=2.1MPaNozzle : φ0.20mmO2 : 21%

Optical Combustion Analyzer

Sample No. Ｃ重油+水４０％Date : Experiment 2011.4.27

【Test1】(Blue line)

Fuel injection = 30.94[msec]

Injection pressure = 31.85[MPa]

Ignition delay = 3.06[msec]

After-burning = 4.20[msec]

Max. ROHR level & time = 0.1593[MJ/s], 5.21[msec] (After the start of injection)

Heat release value = 3.7512[kJ]

【Test2】(Red line)

Fuel injection = 30.96[msec]

Injection pressure = 31.96[MPa]

Ignition delay = 2.98[msec]

After-burning = 3.93[msec]

Max. ROHR level & time = 0.1596[MJ/s], 4.97[msec] (After the start of injection)

Heat release value = 3.7838[kJ]