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Exergetic and Environmental Analyses of Turbojet Engine

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Environmentally-Benign Energy Solutions

Part of the book series: Green Energy and Technology ((GREEN))

Abstract

This study deals with exergetic and environmental analyses of turbojet engine used on the military training aircrafts. In the analysis, the engine data measured in the Engine Test Cell at First Air Maintenance and Factory Directorate of Turkish Air Forces in Eskisehir, Turkey are utilized. The exergy balance equations are derived for each component of the engine along with the overall the engine. Several thermodynamic parameters (the fuel exergy depletion ratio, the productivity lack ratio, the relative exergy consumption ratio, exergetic improvement potential, exergetic improvement potential ratio, relative exergetic improvement potential, exergetic fuel-product ratio, and sustainability index) are used to evaluate the performance of the engine and its main components (the air compressor, the combustion chamber, the gas turbine, the exhaust forward duct, the aft exhaust duct, and the mechanical shaft). Exergy losses and destructions are investigated to determine thermodynamic inefficiencies. The exergetic efficiency of the engine is determined to be 18.77%. The highest exergy destruction rate of 2921.01 kW in the engine occurs within the combustion chamber. The mechanical shaft of the engine has the maximum sustainability index of 100.65. An environmental analysis of the engine is also performed.

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Abbreviations

\(c_{\text{P}}\) :

Specific heat capacity (kJ kg−1 K−1)

\({\dot{\text{E}}}{\text{x}}\) :

Exergy rate (kW)

\({\dot{\text{E}}}{\text{xIP}}\) :

Exergetic improvement potential (kW)

\({\dot{\text{E}}}{\text{xIPR}}\) :

Exergetic improvement potential rate ratio (%)

\({\text{LHV}}\) :

Lower heating value of fuel (kJ kg−1)

\(\dot{m}\) :

Mass flow rate (kg s−1)

p :

Pressure (kPa)

\({\text{R}}{\dot{\text{E}}}{\text{xIP}}\) :

Relative improvement potential rate (%)

SI:

Sustainability index (–)

T :

Temperature (K)

\(\dot{W}\) :

Work rate or power (kW)

\(\alpha\) :

Fuel exergy depletion ratio (%)

\(\beta\) :

Productivity lack ratio in exergetic term (%)

\(\chi\) :

Relative exergy consumption ratio (%)

\(\gamma\) :

Fuel exergy grade function

\(\psi\) :

Exergy (second law) efficiency (%)

a:

Air

AC:

Air compressor

C:

Consumption

CC:

Combustion chamber

cg:

Combustion gases

D:

Destroyed, destruction

EAD:

Exhaust aft duct

EFD:

Exhaust forward duct

GT:

Gas turbine

GTMS:

Gas turbine mechanical shaft

in:

Input

out:

Output

P:

Pressure

Pr:

Product

ref:

Reference

T:

Temperature

TJE:

Turbojet engine

AC:

Air compressor

EAD:

Exhaust aft duct

EFD:

Exhaust forward duct

CC:

Combustion chamber

GT:

Gas turbine

GTMS:

Gas turbine mechanical shaft

TJE:

Aircraft jet engine

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Author information

Authors and Affiliations

  1. Mechanical Engineering Department, Faculty of Engineering, Ege University, Ankara, Turkey

    Burak Yuksel, Ozgur Balli, Huseyin Gunerhan, Arif Hepbasli & Halil Atalay

Authors
  1. Burak Yuksel
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  2. Ozgur Balli
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  3. Huseyin Gunerhan
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  4. Arif Hepbasli
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  5. Halil Atalay
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Corresponding author

Correspondence to Burak Yuksel .

Editor information

Editors and Affiliations

  1. Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, Oshawa, ON, Canada

    Ibrahim Dincer

  2. Dokuz Eylul University, Buca, Izmir, Turkey

    Can Ozgur Colpan

  3. Faculty of Engineering, Department of Mechanical Engineering, Dokuz Eylul University, Buca, Izmir, Turkey

    Mehmet Akif Ezan

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Yuksel, B., Balli, O., Gunerhan, H., Hepbasli, A., Atalay, H. (2020). Exergetic and Environmental Analyses of Turbojet Engine. In: Dincer, I., Colpan, C., Ezan, M. (eds) Environmentally-Benign Energy Solutions. Green Energy and Technology. Springer, Cham. https://doi.org/10.1007/978-3-030-20637-6_21

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  • DOI: https://doi.org/10.1007/978-3-030-20637-6_21

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-20636-9

  • Online ISBN: 978-3-030-20637-6

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