recap on energy conversion system - uniroma1.it. fmec - recap...fluid-fluid ---machinery for energy...
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FluidFluidFluidFluid----Machinery for Energy Conversion SystemsMachinery for Energy Conversion SystemsMachinery for Energy Conversion SystemsMachinery for Energy Conversion Systemsacademic year 2019academic year 2019academic year 2019academic year 2019----2020202020202020
Recap on Energy Conversion System
Prof Alessandro CorsiniDipartimento di Ingegneria Meccanica e Aerospaziale,
Sapienza University of Rome
Big Data in Fluid Machiner and Energy Initiative
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Fpistone
pmedia
Dmedio
UMacchina
Macchina E
Fluid Machinery and Energy Systems
FMRGroup @ DMA-URLS
Power-generating
Power-absorbing
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Energy Conversion Systems
Sources
End-use
Conversion
Waste
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Conversion processes
Primary Energy
Wind, hydro, ocean &c
Thermal Energy
Solar
Geothermal
Mechanical Energy
Electric Energy
End-use
Generator
Chemical
Secondary Energy
Process
Turbomachinery, volumetric machinery
Combustion
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TMRGroup @ DMA-URLS
Electric energy grid, power plantsSource: TERNA
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Composition
Power plant mix
TMRGroup @ DMA-URLS
Steam power plants
Coal fired
Oil and Natural gas fired
Gas Turbine power plants
Natural gas fired
Combined Cycle plants
Repowered plants
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Source TERNA
Standard operation, daily energy demand
TMRGroup @ DMA-URLS
Power plant mix
Hydro-power with storage
Hrydro-power
Thermal powerplants
Import
Hydro-power (river)
Geo-thermal and wind
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Power technology selection and sizing (i)
TMRGroup @ DMA-URLS
Techno-econimic key factors:
• Installed power,
• Annual duty,
• Flexibility (e.g. multi-fuel),
• Conversion efficiency,
• CAPEX,
• OPEX and maintenance.
Gross efficiency data
Steam power plants: standard super-heated steam cycle (170 bar-538/538°C) with
steam bleeding (7-8) 40%
Diesel engine 40%
Gas turbine plant, in CC cycle, above 55%
Unit power 1.300 MW standard SH steam power plants, 750÷900 MW in Combined
Cycle plants, 30÷40 MW DEGS
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TMRGroup @ DMA-URLS
CAPEX
Steam power unit about 950 €/kW (oil or NG powered) or 1200 €/kW (w coal
powered)
CC plants about 600 €/kW.
OPEX (including personel costs, materials and services)
Steam power plant 14 €/kW (oil and NG powered)
Steam power plant 18 €/kW (coal powered)
CC plant 8 €/kW
OPEX (fuels)
Power technology selection and sizing (ii)
Oil ATZ
Oil MTZ
Oil BTZ
Oil STZ
Natural Gas
Diesel fuel
Coal
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TMRGroup @ DMA-URLS
COE per kWh
with n and A annual number and cost of start-ups
Notably, A has a reduce influence on COE structure (0,03÷0,1 c€/kWh)
Power technology selection and sizing (iii), COE
Power
Average annual efficiency
Capex cost
Depreciation rate
Financial charge
Fuel cost
Opex cost
Steam power plant Oil BTZ
Steam power plant NG
Steam power plant Coal
Combined Cycle
Fire hours
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Power plant components and lay-outs
FMRGroup @ DMA-URLS
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Steam power plants
FMRGroup @ DMA-URLS
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TMRGroup @ DMA-URLS
Thermodynamic cycles (i)
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TMRGroup @ DMA-URLS
Thermodynamic cycle (i)
Re-heated Rankine cycle
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TMRGroup @ DMA-URLS
Thermodynamic cycle
Steam bleeding
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TMRGroup @ DMA-URLS
Steam power plant
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Steam turbines
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Gas turbine power plants
FMRGroup @ DMA-URLS
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FMRGroup @ DMA-URLS
Gas turbine thermodynamics
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FMRGroup @ DMA-URLS
Gas turbine compressors
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FMRGroup @ DMA-URLS
Combustore
Gas turbine combustors
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FMRGroup @ DMA-URLS
Il turbogruppo a gas, componenti (iii)
Turbina
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FMRGroup @ DMA-URLS
Gas turbine internal cooling system
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Combined Cycle power plants
FMRGroup @ DMA-URLS
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A Corsini, aa 2008-09
TMRGroup @ DMA-URLS
Configuration
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TMRGroup @ DMA-URLS
Thermodynamic cycle
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TMRGroup @ DMA-URLS
Combined Cycles