1. Engineering
  2. Mechanical Engineering
  3. a combined cycle power plant has a net power output...

Question: a combined cycle power plant has a net power output...

Question details

A Combined cycle power plant has a net power output of 409 MW. Air enters the compressor of the Brayton cycle at 300 K and 100 kPa. The pressure ratio is 19, the turbine inlet temperature is 1500 K and the gases leaving the turbine are used to heat the steam of the Rankine cycle to 500°C and 4 MPa. The combustion gas leaves the heat exchanger (HRSG) at 375 K and the condenser pressure is 10 kPa. The isentropic efficiency of the compressor is 85%, the gas turbine efficiency is 91%, the steam turbine efficiency is 93% and the pump efficiency is 71%. Determine: Heat input in the combustion chamber, Qin (in kW) The overall efficiency of the cycle. a. b.
Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution