Efficient gas turbines by air cooling and pressure drop ... - Bilfinger

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Efficient gas turbines by air cooling and pressure drop ... - Bilfinger

Bilfinger Gerber GmbHEfficient gas turbines by air cooling andpressure drop optimizationMichael Mangel | Hannover Messe 201309.04.2013


Environmental protection and energy demandOur modern world requires moreand more energy. At the same time,we want to protect our environmentmore and more. To find a waybetween the environment protectionand the required energy it isnecessery that the modern powerplants have to operated with thehighest possible efficiency.Efficient gas turbines by air cooling and pressure drop optimization page 2


Construction of a modern combined cycle power plantbypass silencerbypass silencercombustionair intakesilencerair intakefilter housewith coolingsystemAll these necessary soundproofinginternals affect the efficiency of agas turbine.exhaust gas silencerair intakeductexhaust ductEfficient gas turbines by air cooling and pressure drop optimizationpage 3


Opportunities to increase efficiencyIn order to increase the efficiency ofa combined cycle power plant, thereare two options with our technology:▪ Installing a Cooling System▪ Optimized design of the noiseprotection system.Efficient gas turbines by air cooling and pressure drop optimizationpage 4


Cooling system optimization▪ A reduction of the air inlettemperature results in an efficiencyincrease, which in turn leads to adecrease in heating rate▪ The reduction in temperatureresults as well in a net power gain▪ The amount of performanceimprovement depends greatly onthe type of turbine used. On theright you can see the influence in aRolls-Royce Trent 60 gas turbine.Efficient gas turbines by air cooling and pressure drop optimizationpage 5


Cooling systemReducing the temperature to 20°Kcan increase the efficiency by 5%and power by 20%.Efficient gas turbines by air cooling and pressure drop optimization page 6


Optimized designBy flow simulations, the noiseprotection internals are designedpressure drop optimized.Efficient gas turbines by air cooling and pressure drop optimization page 7


Effects of an optimized designA reduction of the pressure dropof 100 Pa increases the efficiencyof a gas turbine to about 0.12%.Efficient gas turbines by air cooling and pressure drop optimization page 8


The influence of the efficiency of the CO 2 emissionsSpecific CO 2 emissions for different fuels,depending on the net efficiencyGraphical representation of therelationship between efficiencyand CO 2 – emissions.Source: BeneschEfficient gas turbines by air cooling and pressure drop optimizationpage 9


Efficient gas turbines by air cooling and pressuredrop optimizationTogether for a “greener environment”Thank you for your attentionEfficient gas turbines by air cooling and pressure drop optimization page 10

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