Question

Consider a steam power plant which operates on the Rankine cycle. The pressures in the boiler...

Consider a steam power plant which operates on the Rankine cycle. The pressures in the boiler and the condenser are 5000 kPa and 40 kPa, respectively. The temperatures at the inlet of the turbine and at the inlet of the pump are 500oC and 70oC, respectively. The isentropic efficiency of the turbine is 94 percent, pressure and pump losses are negligible. If the mass flow rate of steam is 10 kg/s. Determine (a) the heat transfer rate in the boiler, (b) the power input for pump, (c) the net power produced by the cycle and (d) the thermal efficiency of the cycle.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A steam Rankine cycle operates between the pressure limits of 1500 psia in the boiler and...
A steam Rankine cycle operates between the pressure limits of 1500 psia in the boiler and 6 psia in the condenser. The turbine inlet temperature is 800°F. The turbine isentropic efficiency is 90 percent, the pump losses are negligible, and the cycle is sized to produce 2500 kW of power. How much error is caused in the thermal efficiency if the power required by the pump were completely neglected? Use steam tables. The error caused in the thermal efficiency if...
In a power plant based on a simple Rankine cycle, steam enters the turbine at 15...
In a power plant based on a simple Rankine cycle, steam enters the turbine at 15 MPa and 900°C. The condenser pressure is 5 kPa. The turbine operates adiabatically and has an isentropic efficiency of 85%, and the pump also operates adiabatically and has an isentropic efficiency of 80%. Determine the work required to pump the water to the boiler in kJ/kg of water flowing, and the enthalpy of the water leaving the pump.
Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa....
Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa. The Turbine has an isentropic efficiency of 85% and exhausts at 15 kPa. In the condenser, the water is subcooled to 38°C by lake water at 13°C. The pump isentropic efficiency is 75%. a) Draw and label the T-s diagram for this cycle b) Determine the cycle’s thermal efficiency c) Determine the mass flow rate of the steam in the boiler (kg/h) d) Determine...
Consider a 210-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters...
Consider a 210-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters the turbine at 10 MPa and 500°C and is cooled in the condenser at a pressure of 7.5 kPa. a.)Determine the quality of the steam at the turbine exit. Use steam tables. b.)Determine the thermal efficiency of the cycle. c.)Determine the mass flow rate of the steam
Consider a 210-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters...
Consider a 210-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters the turbine at 10 MPa and 500°C and is cooled in the condenser at a pressure of 7.5 kPa. Determine the quality of the steam at the turbine exit. Use steam tables. (You must provide an answer before moving on to the next part.) a.)The quality of the steam at the turbine exit is? b.)Determine the thermal efficiency of the cycle.The thermal efficiency of...
A steam power plant runs on a reheat Rankine cycle. Steam enters both the high and...
A steam power plant runs on a reheat Rankine cycle. Steam enters both the high and low pressure turbines at 500oC. The maximum and minimum pressures of the cycle are 10 MPa and 10 kPa, respectively. Steam leaves the condenser as a saturated liquid. The moisture content of the steam at the exit of the low-pressure turbine is 4% if the actual expansion process is adiabatic; 8.5% if the ideal expansion process is isentropic. The isentropic efficiencies of the high-pressure...
A steam power plant of 15 MW operates on the simple ideal Rankine cycle such that...
A steam power plant of 15 MW operates on the simple ideal Rankine cycle such that the water leaves the condenser as a saturated liquid at a pressure of 15 kPa. The pressure of the water leaving the pump is 5.0 MPa, and the temperature of the steam entering the turbine is 650 ºC. (a) Show the sketch and cycle on a T-s diagram. Determine (b) the thermal efficiency of the cycle and (c) the mass flow rate in kg/s....
Consider a power plant operating on a Rankine cycle using steam as the working fluid. The...
Consider a power plant operating on a Rankine cycle using steam as the working fluid. The boiler pressure is 2.8 MPa and the steam leaving the boiler is superheated to a temperature 110 0C above its saturation temperature. The condenser temperature is 49 0C. Condenser discharges saturates liquid. The efficiency of the turbine is 0.90 and of the pump 0.8 as compared to reversible and adiabatic machines operating at the same pressure ranges. a) Sketch the cycle on a T-S...
QUESTION 5 A steam power plant is designed to operate on a reheat Rankine cycle to...
QUESTION 5 A steam power plant is designed to operate on a reheat Rankine cycle to produce 115 MW of a net power output. Due to metallurgical limitation, the high-pressure turbine is limited to operate at maximum pressure and temperature of 15 MPa and 650°C, respectively. The lowpressure turbine is to operate at maximum pressure and temperature of 3.5 MPa, and 500°C, respectively. Both high and low pressure turbines have maximum isentropic efficiency of 87 percent. The maximum reheat pressure...
A steam power plant operates on the simple ideal rankine cycle between the pressure limits of...
A steam power plant operates on the simple ideal rankine cycle between the pressure limits of 50 kPa and 20 MPa, with a turbine inlet temperature of 600 Degree C. Disregarding the pump work, then: (a) Show the T-S diagram of the entire cycle. (b) Solve the total heat (kJ/kg) input for the cycle. (c) Solve the total heat (kJ/kg) reject by the cycle. (d) Solve the thermal efficiency of this plant.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT