Calculation of mass flow rate of 50MW

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SUMMARY

The discussion focuses on calculating the mass flow rates of air and fuel in a gas turbine engine with an output of 50MW. Key parameters provided include inlet and outlet temperatures and pressures for the compressor, combustor, and turbine, as well as efficiencies for each component. The mass flow rate remains constant throughout the engine, while gas velocity varies based on design characteristics. Participants emphasize the importance of using the provided data to compute the mass flow rates necessary to achieve the specified power output.

PREREQUISITES
  • Understanding of gas turbine engine components (compressor, combustor, turbine)
  • Knowledge of thermodynamic principles and efficiency calculations
  • Familiarity with mass flow rate concepts in fluid dynamics
  • Ability to perform calculations using temperature and pressure data
NEXT STEPS
  • Calculate mass flow rates using the provided temperatures and pressures
  • Research the impact of component efficiencies on overall performance
  • Explore the relationship between power output and mass flow rate in gas turbines
  • Study the design characteristics that affect gas velocity in turbine engines
USEFUL FOR

Engineers, thermodynamics students, and professionals involved in gas turbine design and performance optimization will benefit from this discussion.

JK Gowdham
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Hi i have calculated compressor , combustor , turbine inlet and outlet temperature , pressure so on and my output of gas turbine is 50MW , So for this i want to calculate the mass flow rate of air and fuel in compressor , combustor , turbine . Like m0=?,m1=?fan inlet,m2=? compressor inlet,m3=? combustor inlet,m4=turbine inlet?and massflow rate of fuel mf=? Kindly help me out soon as possible ...
 
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The mass flow is the same throughout the engine; but, the gas velocity will vary depending upon the design and flow characteristics of each section of the engine.
 
JBA said:
The mass flow is the same throughout the engine; but, the gas velocity will vary depending upon the design and flow characteristics of each section of the engine.
so what will be the mass flow rate through the fan for gas turbine of 50mw ...
 
Please describe the engine configuration and and show us your design calculations .
 
Simple single shaft gas turbine one compressor , one turbine . T1 COMPRESSOR inlet=288K,T2 combustor inlet=792.70K,T3 combustor outlet=1500K,T4 turbine outlet=733.50K, same points like pressure P1=101 kpa, P2=1800 kpa , p 3 = 1800 kpa , P4= 101 kpa ... compressor efficiency = 0.88 , combustion chamber eff = 0.98, turbine eff = 0.9, mechanical efficiency = 0.98 . finally turbine output power is = 50 Mw .. here i need mass flow rate for all stages like M1 = compressor mass flow rate,M2 = combustor mass flow rate ,M3 = turbine mass flow rate ,Mf =Mass flow rate of fuel ?
 
If you don't know the mass flow at the power turbine, how did you determine the turbine output power to be 50 mW?
 
You have all the data in the problem statement to compute power output / unit mass flow rate and then find out flow rate to achieve 50MW.
 

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