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Research Article

The effect of using triple bio-fuel blend with Jet-A on engine performance and emissions in mini-scale turbojet engine

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Pages 4616-4632 | Received 23 Nov 2022, Accepted 28 Mar 2023, Published online: 24 Apr 2023
 

ABSTRACT

The aim of the study, which is a blend of triple biofuel CSP and the blended fuel preparation with jet-A for B5 (5% CSP-95% Jet-A), B10 (10% CSP-90% Jet-A), B20 (20% CSP-80% Jet-A), B40 (40% CSP-60% Jet-A), and B80 (80% CSP-20% Jet-A) on GasTurb Details-6. GasTurb-14 software used to perform simulations at different engine speeds. Within the calculations made, the thrust, thrust-specific fuel consumption (TSFC), emission (CO2, CO, NOx) and thermal efficiency values of the fuel blends used in the JetCat-P160 engine were predicted and compared with pure Jet-A fuel. As a result of the simulations, it has been seen that the CSP and Jet-A blends reduce the thrust value to around of 130 N for B20, B40, and B80 fuels with the addition of more than 10% CSP to the blend. TSFC values increase as the biofuel ratio increases and reaches approximately 2 times when the B80 and Jet-A are compared especially at low engine speeds. In addition, the prepared biofuels have a positive effect on reducing the harmful emission of CO value due to the content of O2. At 39 krpm engine speed, the CO value was 0.19% for Jet-A and 0.07% for B80 fuel and as the engine speed increases, it becomes 0.12% for Jet-A and 0.04% for B80 fuel for the maximum speed of 123 krpm. However, biofuels cause reduced combustion efficiency and delayed combustion and so accelerate the formation of NOx especially above 78 krpm engine speed.

Nomenclature

CME=

Canola methyl ester

SME=

Safflower methyl ester

POME=

Palm oil methyl ester

CSP=

Canola-Safflower-Palm oil methyl esters

TSFC=

Thrust-specific fuel consumption, ml/N

CO2=

Carbon dioxide, %vol

CO=

Carbon monoxide, %vol

NOx=

Nitrogene oxide, g/kg

krpm=

Revolution per min ×1000

Hc=

Combustion heat, kJ/kg

Hf=

Formation energy, kJ/kg

Ecu=

Electronic control unit

T=

Temperature, Kel.

f=

Air/fuel ratio

C=

Specific heat, kJ/kgK

ɳb=

Burner efficiency

P=

Pressure, kPa

Ma=

Mach number

ɳth=

Thermal efficiency

Acknowledgements

The author thanks to Selçuk University for their support.

Disclosure statement

No potential conflict of interest was reported by the author.

Additional information

Notes on contributors

Soner Şen

Soner ŞEN completed his Master and PhD studies in Mechanical Engineering and Thermodynamics in 2010 and 2016, respectively. He has studies in the field of Thermodynamics, Energy, Heat and Mass Transfer and has been working as a lecturer in the Civil Aviation Department of Selçuk University since 2016.

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