Abstract
The exergoenvironmental analysis of a medium-size turboprop engine (m-TPE) is researched based on Life Cycle Assessment (LCA) and exergy analysis for maximum take-off power. The m-TPE has the 29.235 mPts/h component-related environmental impact rate, while the gas turbine section between the components has the maximum component-related environmental impact rate with 9.144 mPts/h. The environmental impact rate of jet fuel is determined as 125,280 mPts/h, while the m-TPE consumes 522 kg/h jet fuel in maximum operation mode. Maximum specific environmental impact value is estimated as 12296.41 mPts/GJ in air compressor outlet, while the minimum specific environmental impact is found to be 5224.91 mPts/GJ for the fuel inlet stream of combustion chamber. Additionally, air compressor and combustion chamber units have highest waste exergy environmental impact rates with 9546.94 mPts/h and 56,302 mPts/h, respectively. The waste exergy rates dominate the environmental impacts for m-TPE and its all components excepting gas turbine and power turbine units.
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Abbreviations
- AC:
-
air compressor
- AFR:
-
air–fuel ratio
- b:
-
specific environmental impact, (mPts/GJ)
- \( \dot{B} \):
-
exergoenvironmental impact rate (mPts/h)
- CC:
-
combustion chamber
- cP:
-
specific heat capacity (kJ/kg.K)
- CI:
-
cost impact
- DOC:
-
direct operation costing
- \( \dot{E} \):
-
energy rate (GJ/h)
- ED:
-
exhaust duct nozzle
- EI:
-
environmental impact in EI-99 (mPts/kg)
- EI-99:
-
eco-indicator 99
- EIO:
-
environmental impact of operations
- ET:
-
engine thrust (N)
- \( \dot{E}x \):
-
exergy rate (GJ/h)
- f:
-
exergoenvironmental factor (%)
- GHG:
-
greenhouse gaseous
- GT:
-
gas turbine
- GTMS:
-
GT mechanical shaft
- ICAO:
-
International Civil Aviation Organization
- IATA:
-
International Air Transportation Association
- LCA:
-
Life Cycle Assessment
- LCC:
-
life cycle costing
- LCI:
-
life cycle impact/inventory
- LCIA:
-
life cycle impact analysis
- LHV:
-
lower heating value of fuel (kJ/kg)
- \( \dot{m} \):
-
mass flow rate (kg/s, kg/h)
- M:
-
weight (kg)
- MRO:
-
maintenance, repair, and overhaul
- MS:
-
mechanical shaft
- m-TPE:
-
Medium-Size turboprop engine
- n:
-
lifespan of system (year)
- P:
-
pressure (kPa)
- pLCA:
-
process life cycle assessment
- PT:
-
power turbine
- PTMS:
-
PT mechanical shaft
- R:
-
universal gas constant (kJ/kg K)
- r:
-
relative exergoenvironmental impact difference (%)
- T:
-
temperature (K)
- t:
-
annual operation hours (h)
- V:
-
velocity (m/s)
- \( \dot{W} \):
-
work rate (GJ/h)
- WExR:
-
waste exergy ratio (%)
- Y:
-
environmental impact points related to material (mPts)
- \( \dot{Y} \):
-
environmental impact rate related to material (mPts/h)
- τ:
-
lifetime of materials (h)
- a:
-
air
- AC:
-
air compressor
- CC:
-
combustion chamber
- D:
-
destruction
- ED:
-
exhaust duct nozzle
- F:
-
inlet streams as a Fuel
- g:
-
combustion gasses
- GT:
-
gas turbine
- GTMS:
-
GT mechanical shaft
- k:
-
k’th component, k’th stream
- L:
-
losses
- m-TPE:
-
Medium-Size turboprop engine
- P:
-
pressure
- Pr:
-
outlet stream as Product
- PT:
-
power turbine
- PTMS:
-
PT mechanical shaft
- T:
-
temperature
- tot:
-
total
- WEx:
-
waste exergy
- 0:
-
dead state
- CO:
-
construction
- DI:
-
disposal
- F:
-
inlet streams as a Fuel
- OM:
-
operating and maintenance
- Pr:
-
outlet stream as Product
- tot:
-
total
- WEx:
-
waste exergy
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Balli, O. (2024). Exergoenvironmental Analysis of Medium-Size Turboprop Engine (m-TPE)-Based Life Cycle Analysis (LCA) and Exergy. In: Karakoc, T.H., Ekici, S., Dalkiran, A. (eds) Life Cycle Assessment in Aviation. Sustainable Aviation. Springer, Cham. https://doi.org/10.1007/978-3-031-52772-2_6
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