Question

A combined cycle gas turbine / vapor power plant uses the turbine exhaust as the energy source for the boiler. Each power system uses a single turbine. The gas power system is modeled as an ideal air-standard Brayton cycle. The vapor power system is modeled as an ideal Rankine cycle. Given specific operating conditions determine the temperature and pressure at each state, the rate of heat transfer in the boiler, the power output of each turbine, and the overall efficiency.

--Given Values--
Brayton Compressor Inlet: T1 (K) = 314
Brayton Compressor Inlet: P1 (kPa) = 106
Brayton Heat Exchanger Exit: T5 (K) = 463
Brayton: rp = 11.5
Brayton: rc = 1.9
Brayton: AV (m3/s) = 1.4
Rankine Turbine Inlet: T7 (C) = 600
Rankine Turbine Inlet: P7 (MPa) = 10
Rankine Condenser Inlet: P8 (kPa) = 100

a) Determine the specific enthalpy (kJ/kg) at the compressor inlet.
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b) Determine the specific enthalpy (kJ/kg) at the combustor inlet.
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c) Determine the specific enthalpy (kJ/kg) at the gas turbine inlet.
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d) Determine the temperature (K) at the gas turbine inlet.
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e) Determine the pressure (kPa) at the gas turbine inlet.
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f) Determine the specific enthalpy (kJ/kg) at the gas turbine exit.
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g) Determine the specific enthalpy (kJ/kg) of the gas at the heat exchanger exit.
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h) Determine the mass flow rate of the air (kg/s) in the gas-power system.
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i) Determine the net-power output (kW) of the Brayton cycle.
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j) Determine the rate of heat transfer (kW) to the combustor.
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k) Determine the rate of heat transfer (kW) to the water in the boiler.
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l) Determine the specific enthalpy at the turbine inlet (kJ/kg).
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m) Determine the specific entropy (kJ/kg-K) at the turbine inlet.
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n) Determine the specific enthalpy at the condenser inlet (kJ/kg).
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o) Determine the specific enthalpy at the pump inlet (kJ/kg).
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p) Determine the specific enthalpy at the pump exit (kJ/kg).
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q) Determine the mass flow rate of the water (kg/s) in the vapor-power system.
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r) Determine the net power (kW) of the Rankine cycle.
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s) Determine the thermal efficiency (%) of the combined power plant.
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Your Score=0/100

Answer 1