efficiency of the plant is 33%. Air is supplied to the burners at 2.0 kPa and 300 K. Find the cost of natural gas per hour assuming the cost of natural gas is $20 per MWh. Also, find the power requir...
3/25/ 7. A utility generates 500 MW of electricity while operating on natural gas The overall thermal efficiency of the plant is 33%. Air is supplied to the burners at 2.0 kPa and 300 K. Find the cost of natural gas per hour assum ing the cost of natural gas is S20 per MWh. Also. lind the power required to deliver the burner air across a 2 kPa pressure rise at 300 K. Assume that 10% excess alr is required...
In a combustion turbine using natural gas as the fuel, air enters the compressor at 98 kPa and 300 "K. The pressure ratio in the compressor is 8 and the isentropic efficiency of the compressor is 85%. The outlet temperature of the combustion chamber is 1200 K. The pressure drops by 4 percent in the combustion chamber. The exit pressure of the turbine is 102 kPa and the isentropic efficiency of the turbine is 90%. Find: a) The exit temperature...
An ideal gas turbine operates using air (k=1.4) coming at 375°C and 300 kPa. Find the exit pressure (kPa) if the air exits at 125 oC. Assume the air behaves ideally, properties are constant, and the turbine operates isentropically. The correct answer is 30.8 kPa
Combined cycle power plants are common because of their high efficiency and scalability. They typically combine a gas turbine cycle (the Brayton Cycle) with a steam turbine cycle (the Rankine Cycle) [1]. The goal of this project is to determine the operating efficiency and profitability of a realistic combined cycle power plant. The power plant is as follows: 1. A natural gas-fired Brayton cycle with mÛ air,Br = 1.25 kg s−1 . (a) Ambient air at 1 bar and 300...