Engineering, 21.04.2020 04:21 carri9789
Consider a combined gas-steam power plant that has a net power output of 280 MW. The pressure ratio of the gas-turbine cycle is 11. Air enters the compressor at 300 K and the turbine at 1100 K. The combustion gases leaving the gas turbine are used to heat the steam at 5 MPa to 350°C in a heat exchanger. The combustion gases leave the heat exchanger at 420 K. An open feedwater heater incorporated with the steam cycle operates at a pressure of 0.8 MPa. The condenser pressure is 10 kPa. Assuming isentropic efficiences of 100 percent for the pump, 82 percent for the compressor, and 86 percent for the gas and steam turbines, determine (
a) the mass flow rate ratio of air to steam,
b. ) the required rate of heat input in the combustion chamber, and (
c. ) the thermal efficiency of the combined cycle.
Answers: 1
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 04.07.2019 18:10
What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.
Answers: 2
Engineering, 04.07.2019 18:20
Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms
Answers: 2
Engineering, 04.07.2019 19:10
The maximum shear stress and maximum flexural stress occur at the same location along a beam subjected to a non-uniform bending load. a)-trune b)- false
Answers: 2
Consider a combined gas-steam power plant that has a net power output of 280 MW. The pressure ratio...
History, 05.05.2020 00:52
Mathematics, 05.05.2020 00:52
Mathematics, 05.05.2020 00:52
English, 05.05.2020 00:52
Biology, 05.05.2020 00:52
English, 05.05.2020 00:52
Mathematics, 05.05.2020 00:52
Mathematics, 05.05.2020 00:53
Mathematics, 05.05.2020 00:53